Al–La phases

15 phases (tier A 8, tier C 2, liquid 1, needs_review 4); 13 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–La system page · Markdown · field reference

Phases of the Al–La system (15)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
AL11LA3 phase:al-la:al11la3	Al11La3 · oI28 · Immm (71)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1505.29 K, x(La) 0.21429–0.21429	10	2
AL11LA3_ALPHA phase:al-la:al11la3-alpha		needs_review	stable in 2 of 2 calculated diagram(s): 300–1200 K, x(La) 0.21429–0.21429	7	2
AL11LA3_D13 phase:al-la:al11la3-d13		needs_review	stable in 3 of 3 calculated diagram(s): 1187.12–1513.24 K, x(La) 0.21428–0.21431	11	3
AL2LA_C15 phase:al-la:al2la-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–1677.01 K, x(La) 0.32834–0.37675	20	4
AL3LA_D019 phase:al-la:al3la-d019	Ni3Sn · D0_19 · hP8 · P6_3/mmc (194)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1444.91 K, x(La) 0.25–0.25	10	3
AL53LA22_C32 phase:al-la:al53la22-c32		needs_review	stable in 1 of 1 calculated diagram(s): 1323.62–1540.12 K, x(La) 0.29333–0.29333	4	1
AL7LA3_C32 phase:al-la:al7la3-c32		needs_review	stable in 3 of 3 calculated diagram(s): 1363.18–1513.52 K, x(La) 0.3–0.3	8	3
ALLA phase:al-la:alla	AlCe · oC16 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 300–1150 K, x(La) 0.5–0.5	16	4
D019_ALLA phase:al-la:alla-d019	Ni3Sn · D0_19 · hP8 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1445.51 K, x(La) 0.25–0.75	9	1
ALLA3_D019 phase:al-la:alla3-d019	Ni3Sn · D0_19 · hP8 · P6_3/mmc (194)	tier A: standard phase name	not stable in 3 calculated diagram(s)	3	3
BCC_A2 phase:al-la:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 1089–2499.01 K, x(La) 0.99222–1	3	4
DHCP phase:al-la:dhcp-a3	alpha-La · A3' · hP4 · P6_3/mmc (194)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–1125 K, x(La) 1–1	1	4
FCC_A1 phase:al-la:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–1189 K, x(La) 0–1	19	4
HCP_A3 phase:al-la:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
LIQUID phase:al-la:liquid	liquid	liquid	stable in 4 of 4 calculated diagram(s): 792.84–2500 K, x(La) 0–1	42	4

AL11LA3 (Al–La)

Id: phase:al-la:al11la3; status assigned
Structure: Al11La3 · oI28 · Immm (71); type st:al11la3-oi28; 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_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Al 0.7857, La 0.2143
Stability: stable in 2 of 2 calculated diagram(s): 300–1505.29 K, x(La) 0.21429–0.21429
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:al-la:al11la3
paper: paper:10.1016/j.actamat.2005.10.013:Al11La3, paper:10.1016/s0925-8388(00)00679-4:La3Al11
tdb: tdb:AlLa-00Yin.tdb:AL11LA3, tdb:AlLa-18Lia.tdb:AL11LA3_LT

TDB models of AL11LA3 (2): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: AL11LA3, type code %, sha256 d5ccc26b4706bcb5…

45: PHASE AL11LA3 % 2 11 3 !
46: CONST AL11LA3 : AL : LA : !

AlLa-18Lia.tdb: AL11LA3_LT, type code %, sha256 657c214ec3fe4432…

48: PHASE AL11LA3_LT % 2 11 3 !
49: CONST AL11LA3_LT : AL : LA : !

Example references (3 of 3; assessments first):

doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase; reports values for this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase
doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
reports values for this phase

AL11LA3_ALPHA (Al–La)

Id: phase:al-la:al11la3-alpha; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
Candidate (dft_mp): Immm (71) — on-hull MP La3Al11 at x(LA)=0.2143
Candidate (dft_oqmd): Immm (71) — on-hull OQMD Al11 La3 at x(LA)=0.2143
Candidate (tdb_comment): alpha-Al11La3 · oI28 · Immm — AlLa-01Cac.tdb: 'Prototype alpha-Al11La3 (oI28, Immm)'
Candidate (tdb_comment): alpha-Al11La3 · oI28 · Immm — AlLa-06Zho.tdb: 'Prototype alpha-Al11La3 (oI28, Immm)'
Stoichiometry: Al 0.7857, La 0.2143
Stability: stable in 2 of 2 calculated diagram(s): 300–1200 K, x(La) 0.21429–0.21429
Literature: 7 values (7 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:al-la:al11la3-alpha
paper: paper:10.1016/j.actamat.2005.10.013:Al11La3-α, paper:10.1016/j.actamat.2005.10.013:α-Al11La3, paper:10.1016/s0364-5916(02)00009-3:αLa3Al11
tdb: tdb:AlLa-01Cac.tdb:AL11LA3_ALPHA, tdb:AlLa-06Zho.tdb:AL11LA3_ALPHA

TDB models of AL11LA3_ALPHA (2): PHASE and CONSTITUENT statements as written

AlLa-01Cac.tdb: AL11LA3_ALPHA, type code %, sha256 0a52fd62c246e10d…

46: PHASE AL11LA3_ALPHA % 2 11 3 !
47: CONST AL11LA3_ALPHA : AL : LA : !

AlLa-06Zho.tdb: AL11LA3_ALPHA, type code %, sha256 7e9d80b541dbeca9…

50: PHASE AL11LA3_ALPHA % 2 11 3 !
51: CONST AL11LA3_ALPHA : AL : LA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(88)90092-6 F. Sommer, M. Keita, H.G. Krull, B. Predel, J.J. Lee, Thermodynamic investigations of AlLa alloys, Journal of the Less Common Metals 137, 267-275 (1988).
cited as the source of values for this phase

AL11LA3_D13 (Al–La)

Id: phase:al-la:al11la3-d13; status needs_review
No structure assigned. Why: stoichiometry_contradicts_D1_3:AlLa-01Cac.tdb; stoichiometry_contradicts_D1_3:AlLa-18Lia.tdb
Candidate (dft_mp): Immm (71) — on-hull MP La3Al11 at x(LA)=0.2143
Candidate (dft_oqmd): Immm (71) — on-hull OQMD Al11 La3 at x(LA)=0.2143
Candidate (name_token): Al4Ba · D1_3 · tI10 · I4/mmm (139) — Strukturbericht/word 'D13' in the TDB name
Candidate (sgte_mmc2): Al4Ba · D1_3 · tI10 · I4/mmm (139) — Hallstedt 2025 mmc2 row for AL11LA3_D13: Al11La3-beta
Candidate (tdb_comment): Al4Ba · tI10 · I4/mmm — AlLa-01Cac.tdb: 'Prototype Al4Ba (tI10, I4/mmm)'
Candidate (tdb_comment): Al4Ba · tI10 · I4/mmm — AlLa-06Zho.tdb: 'Prototype Al4Ba (tI10, I4/mmm)'
Candidate (tdb_comment): Al4Ba · tI10 · I4/mmm — AlLa-18Lia.tdb: 'Prototype Al4Ba (tI10, I4/mmm)'
Stability: stable in 3 of 3 calculated diagram(s): 1187.12–1513.24 K, x(La) 0.21428–0.21431
Literature: 11 values (11 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:al-la:al11la3-d13
paper: paper:10.1016/j.actamat.2005.10.013:Al11La3-β, paper:10.1016/s0364-5916(02)00009-3:βLa3Al11
tdb: tdb:AlLa-01Cac.tdb:AL11LA3_D13, tdb:AlLa-06Zho.tdb:AL11LA3_D13, tdb:AlLa-18Lia.tdb:AL11LA3_D13

TDB models of AL11LA3_D13 (3): PHASE and CONSTITUENT statements as written

AlLa-01Cac.tdb: AL11LA3_D13, type code %, sha256 0a52fd62c246e10d…

51: PHASE AL11LA3_D13 % 2 11 3 !
52: CONST AL11LA3_D13 : AL : LA : !

AlLa-06Zho.tdb: AL11LA3_D13, type code %, sha256 7e9d80b541dbeca9…

55: PHASE AL11LA3_D13 % 2 11 3 !
56: CONST AL11LA3_D13 : AL% LA : AL LA% : !

AlLa-18Lia.tdb: AL11LA3_D13, type code %, sha256 657c214ec3fe4432…

53: PHASE AL11LA3_D13 % 2 11 3 !
54: CONST AL11LA3_D13 : AL : LA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase

AL2LA_C15 (Al–La)

Id: phase:al-la:al2la-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 AlLa-01Cac.tdb also describes the disordered state
Caveat: partitioned order/disorder model in AlLa-06Zho.tdb also describes the disordered state
Stability: stable in 4 of 4 calculated diagram(s): 300–1677.01 K, x(La) 0.32834–0.37675
Literature: 20 values (20 accepted) from 3 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:al-la:al2la-c15
paper: paper:10.1016/j.actamat.2005.10.013:Al2La, paper:10.1016/s0364-5916(02)00009-3:LaAl2, paper:10.1016/s0925-8388(00)00679-4:LaAl2
tdb: tdb:AlLa-00Yin.tdb:AL2LA_C15, tdb:AlLa-01Cac.tdb:AL2LA_C15, tdb:AlLa-06Zho.tdb:AL2LA_C15, tdb:AlLa-18Lia.tdb:AL2LA_C15

TDB models of AL2LA_C15 (4): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: AL2LA_C15, type code %, sha256 d5ccc26b4706bcb5…

60: PHASE AL2LA_C15 % 2 2 1 !
61: CONST AL2LA_C15 : AL : LA : !

AlLa-01Cac.tdb: AL2LA_C15, type code %, sha256 0a52fd62c246e10d…

66: PHASE AL2LA_C15 % 2 2 1 !
67: CONST AL2LA_C15 : AL% LA : AL LA% : !

AlLa-06Zho.tdb: AL2LA_C15, type code %, sha256 7e9d80b541dbeca9…

71: PHASE AL2LA_C15 % 2 2 1 !
72: CONST AL2LA_C15 : AL% LA : AL LA% : !

AlLa-18Lia.tdb: AL2LA_C15, type code %, sha256 657c214ec3fe4432…

68: PHASE AL2LA_C15 % 2 2 1 !
69: CONST AL2LA_C15 : AL : LA : !

Example references (4 of 4; assessments first):

doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase

AL3LA_D019 (Al–La)

Id: phase:al-la:al3la-d019; status assigned
Structure: Ni3Sn · D0_19 · hP8 · P6_3/mmc (194); type st:d0-19-ni3sn-hp8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaabkx and oqmd-10484, space group 194
Stoichiometry: Al 0.7500, La 0.2500
Stability: stable in 3 of 3 calculated diagram(s): 300–1444.91 K, x(La) 0.25–0.25
Literature: 10 values (10 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:al-la:al3la-d019
mp: mp:mp-aaaaabkx
oqmd: oqmd:oqmd-10484
paper: paper:10.1016/s0364-5916(02)00009-3:LaAl3, paper:10.1016/s0925-8388(00)00679-4:LaAl3
tdb: tdb:AlLa-00Yin.tdb:AL3LA_D019, tdb:AlLa-01Cac.tdb:AL3LA_D019, tdb:AlLa-18Lia.tdb:AL3LA_D019

TDB models of AL3LA_D019 (3): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: AL3LA_D019, type code %, sha256 d5ccc26b4706bcb5…

50: PHASE AL3LA_D019 % 2 3 1 !
51: CONST AL3LA_D019 : AL : LA : !

AlLa-01Cac.tdb: AL3LA_D019, type code %, sha256 0a52fd62c246e10d…

56: PHASE AL3LA_D019 % 2 3 1 !
57: CONST AL3LA_D019 : AL : LA : !

AlLa-18Lia.tdb: AL3LA_D019, type code %, sha256 657c214ec3fe4432…

58: PHASE AL3LA_D019 % 2 3 1 !
59: CONST AL3LA_D019 : AL : LA : !

Example references (4 of 4; assessments first):

doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase
doi:10.1515/ijmr-1996-870202 A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Z. Metallkd. 87 (1996) 82.
cited as the source of values for this phase

AL53LA22_C32 (Al–La)

Id: phase:al-la:al53la22-c32; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C32; stoichiometry_contradicts_C32:AlLa-01Cac.tdb
Candidate (literature_printed): AlB2 · hP3 — printed with a label mapped to this phase
Candidate (name_token): AlB2 · C32 · hP3 · P6/mmm (191) — Strukturbericht/word 'C32' in the TDB name
Candidate (sgte_mmc2): AlB2 · C32 · hP3 · P6/mmm (191) — Hallstedt 2025 mmc2 row for AL53LA22_C32: Al53La22 (also AlxLa, Al5La2)
Candidate (tdb_comment): AlB2 · hP3 · P6/mmm, AlxLa in Massalski, also Al5La2 — AlLa-01Cac.tdb: 'Prototype AlB2 (hP3, P6/mmm, AlxLa in Massalski, also Al5La2)'
Stoichiometry: Al 0.7067, La 0.2933
Stability: stable in 1 of 1 calculated diagram(s): 1323.62–1540.12 K, x(La) 0.29333–0.29333
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:al-la:al53la22-c32
paper: paper:10.1016/s0364-5916(02)00009-3:La22Al53
tdb: tdb:AlLa-01Cac.tdb:AL53LA22_C32

TDB models of AL53LA22_C32 (1): PHASE and CONSTITUENT statements as written

AlLa-01Cac.tdb: AL53LA22_C32, type code %, sha256 0a52fd62c246e10d…

61: PHASE AL53LA22_C32 % 2 53 22 !
62: CONST AL53LA22_C32 : AL : LA : !

Example references (1 of 1; assessments first):

doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase

AL7LA3_C32 (Al–La)

Id: phase:al-la:al7la3-c32; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C32; stoichiometry_contradicts_C32:AlLa-00Yin.tdb; stoichiometry_contradicts_C32:AlLa-06Zho.tdb; stoichiometry_contradicts_C32:AlLa-18Lia.tdb
Candidate (literature_printed): AlB2 · hP3 — printed with a label mapped to this phase
Candidate (name_token): AlB2 · C32 · hP3 · P6/mmm (191) — Strukturbericht/word 'C32' in the TDB name
Candidate (sgte_mmc2): AlB2 · C32 · hP3 · P6/mmm (191) — Hallstedt 2025 mmc2 row for AL7LA3_C32: Al7La3 (also AlxLa, Al5La2)
Candidate (tdb_comment): AlB2 · hP3 · P6/mmm, AlxLa in Massalski, also Al5La2 — AlLa-00Yin.tdb: 'Prototype AlB2 (hP3, P6/mmm, AlxLa in Massalski, also Al5La2)'
Candidate (tdb_comment): AlB2 · hP3 · P6/mmm, AlxLa in Massalski, also Al5La2 — AlLa-06Zho.tdb: 'Prototype AlB2 (hP3, P6/mmm, AlxLa in Massalski, also Al5La2)'
Candidate (tdb_comment): AlB2 · hP3 · P6/mmm, AlxLa in Massalski, also Al5La2 — AlLa-18Lia.tdb: 'Prototype AlB2 (hP3, P6/mmm, AlxLa in Massalski, also Al5La2)'
Stoichiometry: Al 0.7000, La 0.3000
Stability: stable in 3 of 3 calculated diagram(s): 1363.18–1513.52 K, x(La) 0.3–0.3
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:al-la:al7la3-c32
paper: paper:10.1016/j.actamat.2005.10.013:Al7La3
tdb: tdb:AlLa-00Yin.tdb:AL7LA3_C32, tdb:AlLa-06Zho.tdb:AL7LA3_C32, tdb:AlLa-18Lia.tdb:AL7LA3_C32

TDB models of AL7LA3_C32 (3): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: AL7LA3_C32, type code %, sha256 d5ccc26b4706bcb5…

55: PHASE AL7LA3_C32 % 2 7 3 !
56: CONST AL7LA3_C32 : AL : LA : !

AlLa-06Zho.tdb: AL7LA3_C32, type code %, sha256 7e9d80b541dbeca9…

66: PHASE AL7LA3_C32 % 2 7 3 !
67: CONST AL7LA3_C32 : AL : LA : !

AlLa-18Lia.tdb: AL7LA3_C32, type code %, sha256 657c214ec3fe4432…

63: PHASE AL7LA3_C32 % 2 7 3 !
64: CONST AL7LA3_C32 : AL : LA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase

ALLA (Al–La)

Id: phase:al-la:alla; status assigned
Structure: AlCe · oC16 · Cmcm (63); type st:alce-oc16; 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_63_matches_5_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Al 0.5000, La 0.5000
Stability: stable in 4 of 4 calculated diagram(s): 300–1150 K, x(La) 0.5–0.5
Literature: 16 values (16 accepted) from 3 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:al-la:alla
paper: paper:10.1016/j.actamat.2005.10.013:AlLa, paper:10.1016/s0364-5916(02)00009-3:LaAl, paper:10.1016/s0925-8388(00)00679-4:LaAl
tdb: tdb:AlLa-00Yin.tdb:ALLA, tdb:AlLa-01Cac.tdb:ALLA, tdb:AlLa-06Zho.tdb:ALLA, tdb:AlLa-18Lia.tdb:ALLA

TDB models of ALLA (4): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: ALLA, type code %, sha256 d5ccc26b4706bcb5…

65: PHASE ALLA % 2 1 1 !
66: CONST ALLA : AL : LA : !

AlLa-01Cac.tdb: ALLA, type code %, sha256 0a52fd62c246e10d…

71: PHASE ALLA % 2 1 1 !
72: CONST ALLA : AL : LA : !

AlLa-06Zho.tdb: ALLA, type code %, sha256 7e9d80b541dbeca9…

76: PHASE ALLA % 2 1 1 !
77: CONST ALLA : AL : LA : !

AlLa-18Lia.tdb: ALLA, type code %, sha256 657c214ec3fe4432…

73: PHASE ALLA % 2 1 1 !
74: CONST ALLA : AL : LA : !

Example references (6 of 6; assessments first):

doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase; reports values for this phase
doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase
doi:10.1515/ijmr-1996-870202 A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Z. Metallkd. 87 (1996) 82.
cited as the source of values for this phase
doi:10.1016/s0925-8388(96)02605-9 Gabriella Borzone, Anna Maria Cardinale, Nadia Parodi, Gabriele Cacciamani, Aluminium compounds of the rare earths: enthalpies of formation of Yb-Al and La-Al alloys, Journal of Alloys and Compounds 247, 141-147 (1997).
cited as the source of values for this phase

D019_ALLA (Al–La)

Id: phase:al-la:alla-d019; status assigned
Structure: Ni3Sn · D0_19 · hP8 · P6_3/mmc (194); type st:d0-19-ni3sn-hp8; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in AlLa-06Zho.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 300–1445.51 K, x(La) 0.25–0.75
Literature: 9 values (9 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:al-la:alla-d019, corpus:phase:al-la:d019-alla
paper: paper:10.1016/j.actamat.2005.10.013:Al3La
tdb: tdb:AlLa-06Zho.tdb:D019_ALLA

TDB models of D019_ALLA (1): PHASE and CONSTITUENT statements as written

AlLa-06Zho.tdb: D019_ALLA, type code %, sha256 7e9d80b541dbeca9…

61: PHASE D019_ALLA % 2 3 1 !
62: CONST D019_ALLA : AL% LA : AL LA% : !

Example references (1 of 1; assessments first):

doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase

ALLA3_D019 (Al–La)

Id: phase:al-la:alla3-d019; status assigned
Structure: Ni3Sn · D0_19 · hP8 · P6_3/mmc (194); type st:d0-19-ni3sn-hp8; tier A: standard phase name; confidence high
Stoichiometry: Al 0.2500, La 0.7500
Stability: not stable in 3 calculated diagram(s)
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:al-la:alla3-d019
paper: paper:10.1016/s0364-5916(02)00009-3:La3Al
tdb: tdb:AlLa-00Yin.tdb:ALLA3_D019, tdb:AlLa-01Cac.tdb:ALLA3_D019, tdb:AlLa-18Lia.tdb:ALLA3_D019

TDB models of ALLA3_D019 (3): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: ALLA3_D019, type code %, sha256 d5ccc26b4706bcb5…

70: PHASE ALLA3_D019 % 2 1 3 !
71: CONST ALLA3_D019 : AL : LA : !

AlLa-01Cac.tdb: ALLA3_D019, type code %, sha256 0a52fd62c246e10d…

76: PHASE ALLA3_D019 % 2 1 3 !
77: CONST ALLA3_D019 : AL : LA : !

AlLa-18Lia.tdb: ALLA3_D019, type code %, sha256 657c214ec3fe4432…

78: PHASE ALLA3_D019 % 2 1 3 !
79: CONST ALLA3_D019 : AL : LA : !

Example references (3 of 3; assessments first):

doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase

BCC_A2 (Al–La)

Id: phase:al-la: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 4 of 4 calculated diagram(s): 1089–2499.01 K, x(La) 0.99222–1
Literature: 3 values (3 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:al-la:bcc-a2
paper: paper:10.1016/j.actamat.2005.10.013:bcc, paper:10.1016/s0364-5916(02)00009-3:(γLa)
tdb: tdb:AlLa-00Yin.tdb:BCC_A2, tdb:AlLa-01Cac.tdb:BCC_A2, tdb:AlLa-06Zho.tdb:BCC_A2, tdb:AlLa-18Lia.tdb:BCC_A2

TDB models of BCC_A2 (4): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: BCC_A2, type code %, sha256 d5ccc26b4706bcb5…

35: PHASE BCC_A2 % 2 1 3 !
36: CONST BCC_A2 : AL LA% : VA : !

AlLa-01Cac.tdb: BCC_A2, type code %, sha256 0a52fd62c246e10d…

36: PHASE BCC_A2 % 2 1 3 !
37: CONST BCC_A2 : AL LA% : VA : !

AlLa-06Zho.tdb: BCC_A2, type code %, sha256 7e9d80b541dbeca9…

40: PHASE BCC_A2 % 2 1 3 !
41: CONST BCC_A2 : AL LA% : VA : !

AlLa-18Lia.tdb: BCC_A2, type code %B, sha256 657c214ec3fe4432…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : AL LA% : VA : !

Example references (4 of 4; assessments first):

doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase

DHCP (Al–La)

Id: phase:al-la:dhcp-a3; status assigned
Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type st:a3-alpha-la-hp4; tier A: standard phase name; confidence high
Stability: stable in 4 of 4 calculated diagram(s): 300–1125 K, x(La) 1–1
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:al-la:dhcp-a3, corpus:phase:al-la:dhcp
paper: paper:10.1016/j.actamat.2005.10.013:dhcp
tdb: tdb:AlLa-00Yin.tdb:DHCP, tdb:AlLa-01Cac.tdb:DHCP, tdb:AlLa-06Zho.tdb:DHCP, tdb:AlLa-18Lia.tdb:DHCP

TDB models of DHCP (4): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: DHCP, type code %, sha256 d5ccc26b4706bcb5…

40: PHASE DHCP % 1 1 !
41: CONST DHCP : LA% : !

AlLa-01Cac.tdb: DHCP, type code %, sha256 0a52fd62c246e10d…

41: PHASE DHCP % 1 1 !
42: CONST DHCP : AL LA% : !

AlLa-06Zho.tdb: DHCP, type code %, sha256 7e9d80b541dbeca9…

45: PHASE DHCP % 1 1 !
46: CONST DHCP : AL LA% : !

AlLa-18Lia.tdb: DHCP, type code %, sha256 657c214ec3fe4432…

43: PHASE DHCP % 1 1 !
44: CONST DHCP : LA : !

Example references (4 of 4; assessments first):

doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase
doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase

FCC_A1 (Al–La)

Id: phase:al-la: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 4 of 4 calculated diagram(s): 300–1189 K, x(La) 0–1
Literature: 19 values (19 accepted) from 3 papers
Interactive: phase registry entry

Names (11): corpus: corpus:phase:al-la:fcc-a1
paper: paper:10.1016/j.actamat.2005.10.013:Fcc, paper:10.1016/j.actamat.2005.10.013:fcc, paper:10.1016/s0364-5916(02)00009-3:(Al), paper:10.1016/s0364-5916(02)00009-3:(βLa), paper:10.1016/s0925-8388(00)00679-4:fcc-Al, paper:10.1016/s0925-8388(00)00679-4:β-La
tdb: tdb:AlLa-00Yin.tdb:FCC_A1, tdb:AlLa-01Cac.tdb:FCC_A1, tdb:AlLa-06Zho.tdb:FCC_A1, tdb:AlLa-18Lia.tdb:FCC_A1

TDB models of FCC_A1 (4): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: FCC_A1, type code %, sha256 d5ccc26b4706bcb5…

30: PHASE FCC_A1 % 2 1 1 !
31: CONST FCC_A1 : AL% LA% : VA : !

AlLa-01Cac.tdb: FCC_A1, type code %, sha256 0a52fd62c246e10d…

31: PHASE FCC_A1 % 2 1 1 !
32: CONST FCC_A1 : AL% LA% : VA : !

AlLa-06Zho.tdb: FCC_A1, type code %, sha256 7e9d80b541dbeca9…

35: PHASE FCC_A1 % 2 1 1 !
36: CONST FCC_A1 : AL% LA% : VA : !

AlLa-18Lia.tdb: FCC_A1, type code %A, sha256 657c214ec3fe4432…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : AL% LA% : VA : !

Example references (5 of 5; assessments first):

doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase; reports values for this phase
doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase
doi:10.1515/ijmr-1996-870202 A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Z. Metallkd. 87 (1996) 82.
cited as the source of values for this phase

HCP_A3 (Al–La)

Id: phase:al-la:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stoichiometry: Al 1.0000
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-la:hcp-a3
tdb: tdb:AlLa-18Lia.tdb:HCP_A3

TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written

AlLa-18Lia.tdb: HCP_A3, type code %A, sha256 657c214ec3fe4432…

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

Example references (1 of 1; assessments first):

doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase

LIQUID (Al–La)

Id: phase:al-la:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 4 of 4 calculated diagram(s): 792.84–2500 K, x(La) 0–1
Literature: 42 values (42 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:al-la:liquid
paper: paper:10.1016/j.actamat.2005.10.013:Liq, paper:10.1016/j.actamat.2005.10.013:liquid, paper:10.1016/s0364-5916(02)00009-3:Liquid, paper:10.1016/s0925-8388(00)00679-4:L
tdb: tdb:AlLa-00Yin.tdb:LIQUID, tdb:AlLa-01Cac.tdb:LIQUID, tdb:AlLa-06Zho.tdb:LIQUID, tdb:AlLa-18Lia.tdb:LIQUID

TDB models of LIQUID (4): PHASE and CONSTITUENT statements as written

AlLa-00Yin.tdb: LIQUID, type code %, sha256 d5ccc26b4706bcb5…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : AL LA : !

AlLa-01Cac.tdb: LIQUID, type code %, sha256 0a52fd62c246e10d…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : AL LA : !

AlLa-06Zho.tdb: LIQUID, type code %, sha256 7e9d80b541dbeca9…

30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : AL AL2LA LA : !

AlLa-18Lia.tdb: LIQUID, type code %, sha256 657c214ec3fe4432…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : AL LA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.actamat.2005.10.013 S.H. Zhou, R.E. Napolitano, Phase equilibria and thermodynamic limits for partitionless crystallization in the Al–La binary system, Acta Materialia 54, 831-840 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/S0925-8388(00)00679-4 F. Yin, X. Su, Z. Li, M. Huang, Y. Shi, J. Alloys Compd., 302, 169-72(2000)
assessment that models this phase; reports values for this phase
doi:10.1016/S0364-5916(02)00009-3 G. Cacciamani, R. Ferro, Calphad, 25, 583-97(2001).
assessment that models this phase; reports values for this phase
doi:10.3390/ma11122396 Jinfa Liao, Hang Wang, Tzu-Yu Chen, Experimental Investigation and Thermodynamic Calculation of Ni–Al–La Ternary System in Nickel-Rich Region: A New Intermetallic Compound Ni2AlLa, Materials 11, 2396 (2018).
assessment that models this phase
doi:10.1515/ijmr-1996-870202 A. Saccone, A.M. Cardinale, S. Delfino, R. Ferro, Z. Metallkd. 87 (1996) 82.
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}
}