Al–Ca phases

13 phases (tier A 8, tier C 3, liquid 1, needs_review 1); 9 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Al–Ca system page · Markdown · field reference

Phases of the Al–Ca system (13)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
AL12MG17_A12 phase:al-ca:a12-al12mg17		needs_review	not stable in 1 calculated diagram(s)	0	1
AL14CA13 phase:al-ca:al14ca13	Al14Ca13 · mC54 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 5 of 5 calculated diagram(s): 300–920 K, x(Ca) 0.48148–0.48148	47	5
AL2CA_C15 phase:al-ca:al2ca-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 6 of 6 calculated diagram(s): 300–1359.7 K, x(Ca) 0.33328–0.34053	44	6
AL3CA8 phase:al-ca:al3ca8	Ca8In3 · aP22 · P-1 (2)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 6 of 6 calculated diagram(s): 300–853.46 K, x(Ca) 0.72727–0.72727	58	6
AL4CA_D13 phase:al-ca:al4ca-d13	Al4Ba · D1_3 · tI10 · I4/mmm (139)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 300–976.05 K, x(Ca) 0.2–0.2	36	7
ALCA phase:al-ca:alca	Al14Ca13 · mC54 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–906.36 K, x(Ca) 0.5–0.5	3	1
BCC_A2 phase:al-ca:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 301.03–2500 K, x(Ca) 0.82–1	14	7
C14_LAVES phase:al-ca:c14-laves	MgZn2 · C14 · hP12 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
C15_LAVES phase:al-ca:c15-laves	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1350.39 K, x(Ca) 0.3328–0.3453	0	1
C36_LAVES phase:al-ca:c36-laves	MgNi2 · C36 · hP24 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
FCC_A1 phase:al-ca:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 300–979.24 K, x(Ca) 0–1	13	7
HCP_A3 phase:al-ca:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 7 calculated diagram(s)	0	7
LIQUID phase:al-ca:liquid	liquid	liquid	stable in 7 of 7 calculated diagram(s): 817.45–2500 K, x(Ca) 0–1	79	7

AL12MG17_A12 (Al–Ca)

Id: phase:al-ca:a12-al12mg17; status needs_review
No structure assigned. Why: unrecognised_name_tokens:AL12MG17
Candidate (name_token): alpha-Mn · A12 · cI58 · I-43m (217) — Strukturbericht/word 'A12' in the TDB name
Candidate (sgte_mmc2): alpha-Mn · A12 · cI58 · I-43m (217) — Hallstedt 2025 mmc2 row for AL12MG17_A12: Al12Mg17 (AlMg-gamma)
Candidate (tdb_comment): alpha-Mn · cI58 · I-43m — AlCa-23Hal.tdb: 'Prototype alpha-Mn (cI58, I-43m), also known as ALMG_GAMMA'
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:al-ca:a12-al12mg17
tdb: tdb:AlCa-23Hal.tdb:AL12MG17_A12

TDB models of AL12MG17_A12 (1): PHASE and CONSTITUENT statements as written

AlCa-23Hal.tdb: AL12MG17_A12, type code %, sha256 b7006b968c680380…

82: PHASE AL12MG17_A12 % 3 5 12 12 !
83: CONST AL12MG17_A12 : AL CA : AL CA : AL CA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase

AL14CA13 (Al–Ca)

Id: phase:al-ca:al14ca13; status assigned
Structure: Al14Ca13 · mC54 · C2/m (12); type st:al14ca13-mc54; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Al 0.5185, Ca 0.4815
Stability: stable in 5 of 5 calculated diagram(s): 300–920 K, x(Ca) 0.48148–0.48148
Literature: 47 values (47 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:al-ca:al14ca13
paper: paper:10.1007/s11661-005-0133-0:Al14Ca13, paper:10.1016/s0925-8388(01)01713-3:Al14Ca13, paper:10.1179/cmq.2005.44.4.523:Al14Ca13
tdb: tdb:AlCa-02Ozt-assoc.tdb:AL14CA13, tdb:AlCa-02Ozt.tdb:AL14CA13, tdb:AlCa-05Isl.tdb:AL14CA13, tdb:AlCa-05Ozt.tdb:AL14CA13, tdb:AlCa-23Hal.tdb:AL14CA13

TDB models of AL14CA13 (5): PHASE and CONSTITUENT statements as written

AlCa-02Ozt-assoc.tdb: AL14CA13, type code %, sha256 a4b933e44307c172…

59: PHASE AL14CA13 % 2 14 13 !
60: CONST AL14CA13 : AL : CA : !

AlCa-02Ozt.tdb: AL14CA13, type code %, sha256 bc9f8ec064fb6aa8…

57: PHASE AL14CA13 % 2 14 13 !
58: CONST AL14CA13 : AL : CA : !

AlCa-05Isl.tdb: AL14CA13, type code %, sha256 595cde9e1659c565…

59: PHASE AL14CA13 % 2 14 13 !
60: CONST AL14CA13 : AL : CA : !

AlCa-05Ozt.tdb: AL14CA13, type code %, sha256 f614868b6276a66b…

57: PHASE AL14CA13 % 2 14 13 !
58: CONST AL14CA13 : AL : CA : !

AlCa-23Hal.tdb: AL14CA13, type code %, sha256 b7006b968c680380…

72: PHASE AL14CA13 % 2 14 13 !
73: CONST AL14CA13 : AL : CA : !

Example references (8 of 8; assessments first):

doi:10.1007/s11661-005-0133-0 Koray Ozturk, Yu Zhong, Long-Qing Chen, Zi-Kui Liu, Jorge O. Sofo, C. Wolverton, Linking first-principles energetics to CALPHAD: An application to thermodynamic modeling of the Al-Ca binary system, Metall Mater Trans A 36, 5-13 (2005).
assessment that models this phase; reports values for this phase
doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01713-3 K. Ozturk, L.-Q. Chen, Z.-K. Liu, J. Alloys Compd., 340, 199-206(2002).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase
doi:10.1021/ic980656h Baoquan Huang, John D. Corbett, Two New Binary Calcium−Aluminum Compounds: Ca13Al14, with a Novel Two-Dimensional Aluminum Network, and Ca8Al3, an Fe3Al-Type Analogue1, Inorg. Chem. 37, 5827-5833 (1998).
cited as the source of values for this phase
doi:10.1515/ijmr-2001-0172 D. Kevorkov and R. Schmid-Fetzer: Z. Metallkd., 2001, vol. 92, pp. 946-52.
cited as the source of values for this phase
doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
cited as the source of values for this phase
doi:10.1002/zaac.19080570109 L. Donski, Über die Legierungen des Calciums mit Zink, Cadmium, Aluminium, Thallium, Blei, Zinn, Wismut, Antimon und Kupfer, Z. Anorg. Chem. 57, 185-219 (1908).
cited as the source of values for this phase

AL2CA_C15 (Al–Ca)

Id: phase:al-ca:al2ca-c15; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in AlCa-05Ozt.tdb also describes the disordered state
Stability: stable in 6 of 6 calculated diagram(s): 300–1359.7 K, x(Ca) 0.33328–0.34053
Literature: 44 values (44 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:al-ca:al2ca-c15
paper: paper:10.1007/s11661-005-0133-0:C15, paper:10.1179/cmq.2005.44.4.523:Al2Ca
tdb: tdb:AlCa-01Kev-LB.tdb:AL2CA_C15, tdb:AlCa-02Ozt-assoc.tdb:AL2CA_C15, tdb:AlCa-02Ozt.tdb:AL2CA_C15, tdb:AlCa-05Isl.tdb:AL2CA_C15, tdb:AlCa-05Ozt.tdb:AL2CA_C15, tdb:AlCa-94Ang.tdb:AL2CA_C15

TDB models of AL2CA_C15 (6): PHASE and CONSTITUENT statements as written

AlCa-01Kev-LB.tdb: AL2CA_C15, type code %, sha256 4e8733a4836b005c…

49: PHASE AL2CA_C15 % 2 2 1 !
50: CONST AL2CA_C15 : AL : CA : !

AlCa-02Ozt-assoc.tdb: AL2CA_C15, type code %, sha256 a4b933e44307c172…

54: PHASE AL2CA_C15 % 2 2 1 !
55: CONST AL2CA_C15 : AL : CA : !

AlCa-02Ozt.tdb: AL2CA_C15, type code %, sha256 bc9f8ec064fb6aa8…

52: PHASE AL2CA_C15 % 2 2 1 !
53: CONST AL2CA_C15 : AL : CA : !

AlCa-05Isl.tdb: AL2CA_C15, type code %, sha256 595cde9e1659c565…

54: PHASE AL2CA_C15 % 2 2 1 !
55: CONST AL2CA_C15 : AL : CA : !

AlCa-05Ozt.tdb: AL2CA_C15, type code %, sha256 f614868b6276a66b…

52: PHASE AL2CA_C15 % 2 2 1 !
53: CONST AL2CA_C15 : AL% CA : AL CA% : !

AlCa-94Ang.tdb: AL2CA_C15, type code %, sha256 d30f0116f37bdf75…

52: PHASE AL2CA_C15 % 2 2 1 !
53: CONST AL2CA_C15 : AL : CA : !

Example references (6 of 6; assessments first):

doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
assessment that models this phase; reports values for this phase
doi:10.1007/s11661-005-0133-0 Koray Ozturk, Yu Zhong, Long-Qing Chen, Zi-Kui Liu, Jorge O. Sofo, C. Wolverton, Linking first-principles energetics to CALPHAD: An application to thermodynamic modeling of the Al-Ca binary system, Metall Mater Trans A 36, 5-13 (2005).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01713-3 K. Ozturk, L.-Q. Chen, Z.-K. Liu, J. Alloys Compd., 340, 199-206(2002).
assessment that models this phase; cited as the source of values for this phase
doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/0364-5916(94)90034-5 J.C. Anglezio, C. Servant, I. Ansara, Contribution to the experimental and thermodynamic assessment of the AlCaFeSi system—I. AlCaFe, AlCaSi, AlFeSi and CaFeSi systems, Calphad 18, 273-309 (1994).
assessment that models this phase
doi:10.1515/ijmr-2001-0172 D. Kevorkov and R. Schmid-Fetzer: Z. Metallkd., 2001, vol. 92, pp. 946-52.
cited as the source of values for this phase

AL3CA8 (Al–Ca)

Id: phase:al-ca:al3ca8; status assigned
Structure: Ca8In3 · aP22 · P-1 (2); type st:ca8in3-ap22; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (dft_space_group_2_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Al 0.2727, Ca 0.7273
Stability: stable in 6 of 6 calculated diagram(s): 300–853.46 K, x(Ca) 0.72727–0.72727
Literature: 58 values (58 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:al-ca:al3ca8
paper: paper:10.1007/s11661-005-0133-0:Al3Ca8, paper:10.1179/cmq.2005.44.4.523:Al3Ca8
tdb: tdb:AlCa-01Kev-LB.tdb:AL3CA8, tdb:AlCa-02Ozt-assoc.tdb:AL3CA8, tdb:AlCa-02Ozt.tdb:AL3CA8, tdb:AlCa-05Isl.tdb:AL3CA8, tdb:AlCa-05Ozt.tdb:AL3CA8, tdb:AlCa-23Hal.tdb:AL3CA8

TDB models of AL3CA8 (6): PHASE and CONSTITUENT statements as written

AlCa-01Kev-LB.tdb: AL3CA8, type code %, sha256 4e8733a4836b005c…

59: PHASE AL3CA8 % 2 3 8 !
60: CONST AL3CA8 : AL : CA : !

AlCa-02Ozt-assoc.tdb: AL3CA8, type code %, sha256 a4b933e44307c172…

64: PHASE AL3CA8 % 2 3 8 !
65: CONST AL3CA8 : AL : CA : !

AlCa-02Ozt.tdb: AL3CA8, type code %, sha256 bc9f8ec064fb6aa8…

62: PHASE AL3CA8 % 2 3 8 !
63: CONST AL3CA8 : AL : CA : !

AlCa-05Isl.tdb: AL3CA8, type code %, sha256 595cde9e1659c565…

64: PHASE AL3CA8 % 2 3 8 !
65: CONST AL3CA8 : AL : CA : !

AlCa-05Ozt.tdb: AL3CA8, type code %, sha256 f614868b6276a66b…

62: PHASE AL3CA8 % 2 3 8 !
63: CONST AL3CA8 : AL : CA : !

AlCa-23Hal.tdb: AL3CA8, type code %, sha256 b7006b968c680380…

77: PHASE AL3CA8 % 2 3 8 !
78: CONST AL3CA8 : AL : CA : !

Example references (8 of 8; assessments first):

doi:10.1007/s11661-005-0133-0 Koray Ozturk, Yu Zhong, Long-Qing Chen, Zi-Kui Liu, Jorge O. Sofo, C. Wolverton, Linking first-principles energetics to CALPHAD: An application to thermodynamic modeling of the Al-Ca binary system, Metall Mater Trans A 36, 5-13 (2005).
assessment that models this phase; reports values for this phase
doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01713-3 K. Ozturk, L.-Q. Chen, Z.-K. Liu, J. Alloys Compd., 340, 199-206(2002).
assessment that models this phase; cited as the source of values for this phase
doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase
doi:10.1021/ic980656h Baoquan Huang, John D. Corbett, Two New Binary Calcium−Aluminum Compounds: Ca13Al14, with a Novel Two-Dimensional Aluminum Network, and Ca8Al3, an Fe3Al-Type Analogue1, Inorg. Chem. 37, 5827-5833 (1998).
cited as the source of values for this phase
doi:10.1515/ijmr-2001-0172 D. Kevorkov and R. Schmid-Fetzer: Z. Metallkd., 2001, vol. 92, pp. 946-52.
cited as the source of values for this phase
doi:10.1002/zaac.19080570109 L. Donski, Über die Legierungen des Calciums mit Zink, Cadmium, Aluminium, Thallium, Blei, Zinn, Wismut, Antimon und Kupfer, Z. Anorg. Chem. 57, 185-219 (1908).
cited as the source of values for this phase

AL4CA_D13 (Al–Ca)

Id: phase:al-ca:al4ca-d13; status assigned
Structure: Al4Ba · D1_3 · tI10 · I4/mmm (139); type st:d1-3-al4ba-ti10; tier A: standard phase name; confidence high
Stoichiometry: Al 0.8000, Ca 0.2000
Stability: stable in 7 of 7 calculated diagram(s): 300–976.05 K, x(Ca) 0.2–0.2
Literature: 36 values (36 accepted) from 2 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:al-ca:al4ca-d13
paper: paper:10.1007/s11661-005-0133-0:Al4Ca, paper:10.1179/cmq.2005.44.4.523:Al4Ca
tdb: tdb:AlCa-01Kev-LB.tdb:AL4CA_D13, tdb:AlCa-02Ozt-assoc.tdb:AL4CA_D13, tdb:AlCa-02Ozt.tdb:AL4CA_D13, tdb:AlCa-05Isl.tdb:AL4CA_D13, tdb:AlCa-05Ozt.tdb:AL4CA_D13, tdb:AlCa-23Hal.tdb:AL4CA_D13, tdb:AlCa-94Ang.tdb:AL4CA_D13

TDB models of AL4CA_D13 (7): PHASE and CONSTITUENT statements as written

AlCa-01Kev-LB.tdb: AL4CA_D13, type code %, sha256 4e8733a4836b005c…

44: PHASE AL4CA_D13 % 2 4 1 !
45: CONST AL4CA_D13 : AL : CA : !

AlCa-02Ozt-assoc.tdb: AL4CA_D13, type code %, sha256 a4b933e44307c172…

49: PHASE AL4CA_D13 % 2 4 1 !
50: CONST AL4CA_D13 : AL : CA : !

AlCa-02Ozt.tdb: AL4CA_D13, type code %, sha256 bc9f8ec064fb6aa8…

47: PHASE AL4CA_D13 % 2 4 1 !
48: CONST AL4CA_D13 : AL : CA : !

AlCa-05Isl.tdb: AL4CA_D13, type code %, sha256 595cde9e1659c565…

49: PHASE AL4CA_D13 % 2 4 1 !
50: CONST AL4CA_D13 : AL : CA : !

AlCa-05Ozt.tdb: AL4CA_D13, type code %, sha256 f614868b6276a66b…

47: PHASE AL4CA_D13 % 2 4 1 !
48: CONST AL4CA_D13 : AL : CA : !

AlCa-23Hal.tdb: AL4CA_D13, type code %, sha256 b7006b968c680380…

67: PHASE AL4CA_D13 % 2 4 1 !
68: CONST AL4CA_D13 : AL : CA : !

AlCa-94Ang.tdb: AL4CA_D13, type code %, sha256 d30f0116f37bdf75…

47: PHASE AL4CA_D13 % 2 4 1 !
48: CONST AL4CA_D13 : AL : CA : !

Example references (8 of 8; assessments first):

doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
assessment that models this phase; reports values for this phase
doi:10.1007/s11661-005-0133-0 Koray Ozturk, Yu Zhong, Long-Qing Chen, Zi-Kui Liu, Jorge O. Sofo, C. Wolverton, Linking first-principles energetics to CALPHAD: An application to thermodynamic modeling of the Al-Ca binary system, Metall Mater Trans A 36, 5-13 (2005).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01713-3 K. Ozturk, L.-Q. Chen, Z.-K. Liu, J. Alloys Compd., 340, 199-206(2002).
assessment that models this phase; cited as the source of values for this phase
doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/0364-5916(94)90034-5 J.C. Anglezio, C. Servant, I. Ansara, Contribution to the experimental and thermodynamic assessment of the AlCaFeSi system—I. AlCaFe, AlCaSi, AlFeSi and CaFeSi systems, Calphad 18, 273-309 (1994).
assessment that models this phase
doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase
doi:10.1002/zaac.19080570109 L. Donski, Über die Legierungen des Calciums mit Zink, Cadmium, Aluminium, Thallium, Blei, Zinn, Wismut, Antimon und Kupfer, Z. Anorg. Chem. 57, 185-219 (1908).
cited as the source of values for this phase
doi:10.1515/ijmr-2001-0172 D. Kevorkov and R. Schmid-Fetzer: Z. Metallkd., 2001, vol. 92, pp. 946-52.
cited as the source of values for this phase

ALCA (Al–Ca)

Id: phase:al-ca:alca; status assigned
Structure: Al14Ca13 · mC54 · C2/m (12); type st:al14ca13-mc54; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Al 0.5000, Ca 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–906.36 K, x(Ca) 0.5–0.5
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:al-ca:alca
paper: paper:10.1179/cmq.2005.44.4.523:AlCa
tdb: tdb:AlCa-01Kev-LB.tdb:ALCA

TDB models of ALCA (1): PHASE and CONSTITUENT statements as written

AlCa-01Kev-LB.tdb: ALCA, type code %, sha256 4e8733a4836b005c…

54: PHASE ALCA % 2 1 1 !
55: CONST ALCA : AL : CA : !

Example references (2 of 2; assessments first):

doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
assessment that models this phase
doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
reports values for this phase

BCC_A2 (Al–Ca)

Id: phase:al-ca:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 301.03–2500 K, x(Ca) 0.82–1
Literature: 14 values (14 accepted) from 2 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:al-ca:bcc-a2
paper: paper:10.1007/s11661-005-0133-0:βCa, paper:10.1179/cmq.2005.44.4.523:Al-bcc, paper:10.1179/cmq.2005.44.4.523:Ca-bcc
tdb: tdb:AlCa-01Kev-LB.tdb:BCC_A2, tdb:AlCa-02Ozt-assoc.tdb:BCC_A2, tdb:AlCa-02Ozt.tdb:BCC_A2, tdb:AlCa-05Isl.tdb:BCC_A2, tdb:AlCa-05Ozt.tdb:BCC_A2, tdb:AlCa-23Hal.tdb:BCC_A2, tdb:AlCa-94Ang.tdb:BCC_A2

TDB models of BCC_A2 (7): PHASE and CONSTITUENT statements as written

AlCa-01Kev-LB.tdb: BCC_A2, type code %B, sha256 4e8733a4836b005c…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : AL CA% : VA : !

AlCa-02Ozt-assoc.tdb: BCC_A2, type code %B, sha256 a4b933e44307c172…

39: PHASE BCC_A2 %B 2 1 3 !
40: CONST BCC_A2 : AL CA% : VA : !

AlCa-02Ozt.tdb: BCC_A2, type code %B, sha256 bc9f8ec064fb6aa8…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : AL CA% : VA : !

AlCa-05Isl.tdb: BCC_A2, type code %B, sha256 595cde9e1659c565…

39: PHASE BCC_A2 %B 2 1 3 !
40: CONST BCC_A2 : AL CA% : VA : !

AlCa-05Ozt.tdb: BCC_A2, type code %B, sha256 f614868b6276a66b…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : AL CA% : VA : !

AlCa-23Hal.tdb: BCC_A2, type code %B, sha256 b7006b968c680380…

57: PHASE BCC_A2 %B 2 1 3 !
58: CONST BCC_A2 : AL CA% : VA : !

AlCa-94Ang.tdb: BCC_A2, type code %B, sha256 d30f0116f37bdf75…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : AL CA% : VA : !

Example references (8 of 8; assessments first):

doi:10.1007/s11661-005-0133-0 Koray Ozturk, Yu Zhong, Long-Qing Chen, Zi-Kui Liu, Jorge O. Sofo, C. Wolverton, Linking first-principles energetics to CALPHAD: An application to thermodynamic modeling of the Al-Ca binary system, Metall Mater Trans A 36, 5-13 (2005).
assessment that models this phase; reports values for this phase
doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01713-3 K. Ozturk, L.-Q. Chen, Z.-K. Liu, J. Alloys Compd., 340, 199-206(2002).
assessment that models this phase; cited as the source of values for this phase
doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/0364-5916(94)90034-5 J.C. Anglezio, C. Servant, I. Ansara, Contribution to the experimental and thermodynamic assessment of the AlCaFeSi system—I. AlCaFe, AlCaSi, AlFeSi and CaFeSi systems, Calphad 18, 273-309 (1994).
assessment that models this phase
doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase
doi:10.1002/zaac.19080570109 L. Donski, Über die Legierungen des Calciums mit Zink, Cadmium, Aluminium, Thallium, Blei, Zinn, Wismut, Antimon und Kupfer, Z. Anorg. Chem. 57, 185-219 (1908).
cited as the source of values for this phase
doi:10.1515/ijmr-2001-0172 D. Kevorkov and R. Schmid-Fetzer: Z. Metallkd., 2001, vol. 92, pp. 946-52.
cited as the source of values for this phase

C14_LAVES (Al–Ca)

Id: phase:al-ca:c14-laves; status assigned
Structure: MgZn2 · C14 · hP12 · P6_3/mmc (194); type st:c14-mgzn2-hp12; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in AlCa-23Hal.tdb also describes the disordered state
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:al-ca:c14-laves
tdb: tdb:AlCa-23Hal.tdb:C14_LAVES

TDB models of C14_LAVES (1): PHASE and CONSTITUENT statements as written

AlCa-23Hal.tdb: C14_LAVES, type code %, sha256 b7006b968c680380…

87: PHASE C14_LAVES % 3 1 2 3 !
88: CONST C14_LAVES : AL% CA : AL CA% : AL% CA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase

C15_LAVES (Al–Ca)

Id: phase:al-ca:c15-laves; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in AlCa-23Hal.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 300–1350.39 K, x(Ca) 0.3328–0.3453
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:al-ca:c15-laves
tdb: tdb:AlCa-23Hal.tdb:C15_LAVES

TDB models of C15_LAVES (1): PHASE and CONSTITUENT statements as written

AlCa-23Hal.tdb: C15_LAVES, type code %, sha256 b7006b968c680380…

92: PHASE C15_LAVES % 2 2 4 !
93: CONST C15_LAVES : AL CA% : AL% CA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase

C36_LAVES (Al–Ca)

Id: phase:al-ca:c36-laves; status assigned
Structure: MgNi2 · C36 · hP24 · P6_3/mmc (194); type st:c36-mgni2-hp24; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in AlCa-23Hal.tdb also describes the disordered state
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:al-ca:c36-laves
tdb: tdb:AlCa-23Hal.tdb:C36_LAVES

TDB models of C36_LAVES (1): PHASE and CONSTITUENT statements as written

AlCa-23Hal.tdb: C36_LAVES, type code %, sha256 b7006b968c680380…

97: PHASE C36_LAVES % 4 1 1 1 3 !
98: CONST C36_LAVES : AL CA : AL CA : AL CA : AL CA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase

FCC_A1 (Al–Ca)

Id: phase:al-ca:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 300–979.24 K, x(Ca) 0–1
Literature: 13 values (13 accepted) from 2 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:al-ca:fcc-a1
paper: paper:10.1007/s11661-005-0133-0:Al, paper:10.1179/cmq.2005.44.4.523:Al-fcc
tdb: tdb:AlCa-01Kev-LB.tdb:FCC_A1, tdb:AlCa-02Ozt-assoc.tdb:FCC_A1, tdb:AlCa-02Ozt.tdb:FCC_A1, tdb:AlCa-05Isl.tdb:FCC_A1, tdb:AlCa-05Ozt.tdb:FCC_A1, tdb:AlCa-23Hal.tdb:FCC_A1, tdb:AlCa-94Ang.tdb:FCC_A1

TDB models of FCC_A1 (7): PHASE and CONSTITUENT statements as written

AlCa-01Kev-LB.tdb: FCC_A1, type code %A, sha256 4e8733a4836b005c…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : AL% CA% : VA : !

AlCa-02Ozt-assoc.tdb: FCC_A1, type code %A, sha256 a4b933e44307c172…

34: PHASE FCC_A1 %A 2 1 1 !
35: CONST FCC_A1 : AL% CA% : VA : !

AlCa-02Ozt.tdb: FCC_A1, type code %A, sha256 bc9f8ec064fb6aa8…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : AL% CA% : VA : !

AlCa-05Isl.tdb: FCC_A1, type code %A, sha256 595cde9e1659c565…

34: PHASE FCC_A1 %A 2 1 1 !
35: CONST FCC_A1 : AL% CA% : VA : !

AlCa-05Ozt.tdb: FCC_A1, type code %A, sha256 f614868b6276a66b…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : AL% CA% : VA : !

AlCa-23Hal.tdb: FCC_A1, type code %A, sha256 b7006b968c680380…

52: PHASE FCC_A1 %A 2 1 1 !
53: CONST FCC_A1 : AL% CA% : VA : !

AlCa-94Ang.tdb: FCC_A1, type code %A, sha256 d30f0116f37bdf75…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : AL% CA% : VA : !

Example references (8 of 8; assessments first):

doi:10.1007/s11661-005-0133-0 Koray Ozturk, Yu Zhong, Long-Qing Chen, Zi-Kui Liu, Jorge O. Sofo, C. Wolverton, Linking first-principles energetics to CALPHAD: An application to thermodynamic modeling of the Al-Ca binary system, Metall Mater Trans A 36, 5-13 (2005).
assessment that models this phase; reports values for this phase
doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01713-3 K. Ozturk, L.-Q. Chen, Z.-K. Liu, J. Alloys Compd., 340, 199-206(2002).
assessment that models this phase; cited as the source of values for this phase
doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/0364-5916(94)90034-5 J.C. Anglezio, C. Servant, I. Ansara, Contribution to the experimental and thermodynamic assessment of the AlCaFeSi system—I. AlCaFe, AlCaSi, AlFeSi and CaFeSi systems, Calphad 18, 273-309 (1994).
assessment that models this phase
doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase
doi:10.1002/zaac.19080570109 L. Donski, Über die Legierungen des Calciums mit Zink, Cadmium, Aluminium, Thallium, Blei, Zinn, Wismut, Antimon und Kupfer, Z. Anorg. Chem. 57, 185-219 (1908).
cited as the source of values for this phase
doi:10.1515/ijmr-2001-0172 D. Kevorkov and R. Schmid-Fetzer: Z. Metallkd., 2001, vol. 92, pp. 946-52.
cited as the source of values for this phase

HCP_A3 (Al–Ca)

Id: phase:al-ca:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: not stable in 7 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:al-ca:hcp-a3
tdb: tdb:AlCa-01Kev-LB.tdb:HCP_A3, tdb:AlCa-02Ozt-assoc.tdb:HCP_A3, tdb:AlCa-02Ozt.tdb:HCP_A3, tdb:AlCa-05Isl.tdb:HCP_A3, tdb:AlCa-05Ozt.tdb:HCP_A3, tdb:AlCa-23Hal.tdb:HCP_A3, tdb:AlCa-94Ang.tdb:HCP_A3

TDB models of HCP_A3 (7): PHASE and CONSTITUENT statements as written

AlCa-01Kev-LB.tdb: HCP_A3, type code %A, sha256 4e8733a4836b005c…

39: PHASE HCP_A3 %A 2 1 0.5 !
40: CONST HCP_A3 : AL CA : VA : !

AlCa-02Ozt-assoc.tdb: HCP_A3, type code %A, sha256 a4b933e44307c172…

44: PHASE HCP_A3 %A 2 1 0.5 !
45: CONST HCP_A3 : AL CA : VA : !

AlCa-02Ozt.tdb: HCP_A3, type code %A, sha256 bc9f8ec064fb6aa8…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : AL CA : VA : !

AlCa-05Isl.tdb: HCP_A3, type code %A, sha256 595cde9e1659c565…

44: PHASE HCP_A3 %A 2 1 0.5 !
45: CONST HCP_A3 : AL CA : VA : !

AlCa-05Ozt.tdb: HCP_A3, type code %A, sha256 f614868b6276a66b…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : AL CA : VA : !

AlCa-23Hal.tdb: HCP_A3, type code %A, sha256 b7006b968c680380…

62: PHASE HCP_A3 %A 2 1 0.5 !
63: CONST HCP_A3 : AL CA : VA : !

AlCa-94Ang.tdb: HCP_A3, type code %A, sha256 d30f0116f37bdf75…

42: PHASE HCP_A3 %A 2 1 0.5 !
43: CONST HCP_A3 : AL CA : VA : !

Example references (6 of 6; assessments first):

doi:10.1007/s11661-005-0133-0 Koray Ozturk, Yu Zhong, Long-Qing Chen, Zi-Kui Liu, Jorge O. Sofo, C. Wolverton, Linking first-principles energetics to CALPHAD: An application to thermodynamic modeling of the Al-Ca binary system, Metall Mater Trans A 36, 5-13 (2005).
assessment that models this phase
doi:10.1016/0364-5916(94)90034-5 J.C. Anglezio, C. Servant, I. Ansara, Contribution to the experimental and thermodynamic assessment of the AlCaFeSi system—I. AlCaFe, AlCaSi, AlFeSi and CaFeSi systems, Calphad 18, 273-309 (1994).
assessment that models this phase
doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase
doi:10.1016/S0925-8388(01)01713-3 K. Ozturk, L.-Q. Chen, Z.-K. Liu, J. Alloys Compd., 340, 199-206(2002).
assessment that models this phase
doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
assessment that models this phase
doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
assessment that models this phase

LIQUID (Al–Ca)

Id: phase:al-ca:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 817.45–2500 K, x(Ca) 0–1
Literature: 79 values (79 accepted) from 3 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:al-ca:liquid
paper: paper:10.1007/s11661-005-0133-0:Liquid, paper:10.1016/s0925-8388(01)01713-3:liquid, paper:10.1179/cmq.2005.44.4.523:L
tdb: tdb:AlCa-01Kev-LB.tdb:LIQUID, tdb:AlCa-02Ozt-assoc.tdb:LIQUID, tdb:AlCa-02Ozt.tdb:LIQUID, tdb:AlCa-05Isl.tdb:LIQUID, tdb:AlCa-05Ozt.tdb:LIQUID, tdb:AlCa-23Hal.tdb:LIQUID, tdb:AlCa-94Ang.tdb:LIQUID

TDB models of LIQUID (7): PHASE and CONSTITUENT statements as written

AlCa-01Kev-LB.tdb: LIQUID, type code %, sha256 4e8733a4836b005c…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : AL CA : !

AlCa-02Ozt-assoc.tdb: LIQUID, type code %, sha256 a4b933e44307c172…

29: PHASE LIQUID:L % 1 1 !
30: CONST LIQUID:L : AL AL2CA CA : !

AlCa-02Ozt.tdb: LIQUID, type code %, sha256 bc9f8ec064fb6aa8…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : AL CA : !

AlCa-05Isl.tdb: LIQUID, type code %, sha256 595cde9e1659c565…

29: PHASE LIQUID:L % 1 1 !
30: CONST LIQUID:L : AL CA : !

AlCa-05Ozt.tdb: LIQUID, type code %, sha256 f614868b6276a66b…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : AL CA : !

AlCa-23Hal.tdb: LIQUID, type code %, sha256 b7006b968c680380…

47: PHASE LIQUID:L % 1 1 !
48: CONST LIQUID:L : AL CA : !

AlCa-94Ang.tdb: LIQUID, type code %, sha256 d30f0116f37bdf75…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : AL CA : !

Example references (8 of 8; assessments first):

doi:10.1007/s11661-005-0133-0 Koray Ozturk, Yu Zhong, Long-Qing Chen, Zi-Kui Liu, Jorge O. Sofo, C. Wolverton, Linking first-principles energetics to CALPHAD: An application to thermodynamic modeling of the Al-Ca binary system, Metall Mater Trans A 36, 5-13 (2005).
assessment that models this phase; reports values for this phase
doi:10.1179/cmq.2005.44.4.523 F. ISLAM, M. MEDRAJ, THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM, Canadian Metallurgical Quarterly 44, 523-536 (2005).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(01)01713-3 K. Ozturk, L.-Q. Chen, Z.-K. Liu, J. Alloys Compd., 340, 199-206(2002).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1515/ijmr-2001-0173 D. Kevorkov, R. Schmid-Fetzer, A. Pisch, F. Hodaj, and C. Colinet: Z. Metallkd., 2001, vol. 92, pp. 953-58.
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/0364-5916(94)90034-5 J.C. Anglezio, C. Servant, I. Ansara, Contribution to the experimental and thermodynamic assessment of the AlCaFeSi system—I. AlCaFe, AlCaSi, AlFeSi and CaFeSi systems, Calphad 18, 273-309 (1994).
assessment that models this phase
doi:10.1016/j.calphad.2023.102577 B. Hallstedt, M. Noori, Calphad, 82, 102577(2023).
assessment that models this phase
doi:10.1515/ijmr-2001-0172 D. Kevorkov and R. Schmid-Fetzer: Z. Metallkd., 2001, vol. 92, pp. 946-52.
cited as the source of values for this phase
doi:10.1002/zaac.19080570109 L. Donski, Über die Legierungen des Calciums mit Zink, Cadmium, Aluminium, Thallium, Blei, Zinn, Wismut, Antimon und Kupfer, Z. Anorg. Chem. 57, 185-219 (1908).
cited as the source of values for this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}