Ca–Ga phases

14 phases (tier A 6, tier B 1, tier C 6, liquid 1); 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 · Ca–Ga system page · Markdown · field reference

Phases of the Ca–Ga system (14)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
ORTHORHOMBIC_A11 phase:ca-ga:a11-orthorhombic	alpha-Ga · A11 · oC8 · Cmce (64)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–302.91 K, x(Ga) 1–1	4	3
BCC_A2 phase:ca-ga:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 716.03–1128.27 K, x(Ga) 0–1e-05	4	3
CA11GA7 phase:ca-ga:ca11ga7	Ca11Ga7 · cF144 · Fm-3m (225)	tier B: DFT-supported (unique MP + OQMD match)	stable in 3 of 3 calculated diagram(s): 300–927.96 K, x(Ga) 0.38889–0.38889	12	3
CA25GA59 phase:ca-ga:ca25ga59	Ca25Ga59 · hP9 · P6/mmm (191)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1245.34 K, x(Ga) 0.70238–0.70238	9	3
CA28GA11 phase:ca-ga:ca28ga11	Ca28Ga11 · oI178 · Imm2 (44)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–820.64 K, x(Ga) 0.28205–0.28205	15	3
CA3GA5 phase:ca-ga:ca3ga5	Ca3Ga5 · oC32 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1145.75 K, x(Ga) 0.625–0.625	15	3
CA3GA8 phase:ca-ga:ca3ga8	Eu3Ga8 · oI22 · Immm (71)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1202.84 K, x(Ga) 0.72727–0.72727	14	3
CA5GA3_D8L phase:ca-ga:ca5ga3-d8l	Cr5B3 · D8_l · tI32 · I4/mcm (140)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–900.26 K, x(Ga) 0.375–0.375	8	3
CAGA_B33 phase:ca-ga:caga-b33	CrB · B33 · oC8 · Cmcm (63)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1086.77 K, x(Ga) 0.5–0.5	8	3
CAGA2 phase:ca-ga:caga2	CaIn2 · hP6 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1263.96 K, x(Ga) 0.66667–0.66667	20	3
CAGA4 phase:ca-ga:caga4	CaGa4 · mC10 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–1027.43 K, x(Ga) 0.8–0.8	16	3
FCC_A1 phase:ca-ga:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–716.03 K, x(Ga) 0–0	0	3
HCP_A3 phase:ca-ga:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 3 calculated diagram(s)	0	3
LIQUID phase:ca-ga:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 301.69–2500 K, x(Ga) 0–1	46	3

ORTHORHOMBIC_A11 (Ca–Ga)

Id: phase:ca-ga:a11-orthorhombic; status assigned
Structure: alpha-Ga · A11 · oC8 · Cmce (64); type st:a11-alpha-ga-oc8; tier A: standard phase name; confidence high
Stoichiometry: Ga 1.0000
Stability: stable in 3 of 3 calculated diagram(s): 300–302.91 K, x(Ga) 1–1
Literature: 4 values (4 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ca-ga:a11-orthorhombic, corpus:phase:ca-ga:orthorhombic-a11
paper: paper:10.1016/j.calphad.2006.09.004:Ga, paper:10.1016/j.calphad.2013.09.002:(Ga)
tdb: tdb:CaGa-07Wan.tdb:ORTHORHOMBIC_A11, tdb:CaGa-13Li-1.tdb:ORTHORHOMBIC_A11, tdb:CaGa-13Li-2.tdb:ORTHORHOMBIC_A11

TDB models of ORTHORHOMBIC_A11 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: ORTHORHOMBIC_A11, type code %, sha256 c18186f6a4b0008b…

46: PHASE ORTHORHOMBIC_A11 % 1 1 !
47: CONST ORTHORHOMBIC_A11 : GA : !

CaGa-13Li-1.tdb: ORTHORHOMBIC_A11, type code %, sha256 cc3c61d183edd309…

45: PHASE ORTHORHOMBIC_A11 % 1 1 !
46: CONST ORTHORHOMBIC_A11 : GA : !

CaGa-13Li-2.tdb: ORTHORHOMBIC_A11, type code %, sha256 3fce55b3480fdf7c…

45: PHASE ORTHORHOMBIC_A11 % 1 1 !
46: CONST ORTHORHOMBIC_A11 : GA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(89)90171-9 G Bruzzone, M.L Fornasini, F Merlo, Re-examination of the Ca-Ga system and crystal structure of CaGa4, a monoclinic distortion of the BaAl4 type, Journal of the Less Common Metals 154, 67-77 (1989).
cited as the source of values for this phase

BCC_A2 (Ca–Ga)

Id: phase:ca-ga: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 3 of 3 calculated diagram(s): 716.03–1128.27 K, x(Ga) 0–1e-05
Literature: 4 values (4 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ca-ga:bcc-a2
paper: paper:10.1016/j.calphad.2006.09.004:Ca, paper:10.1016/j.calphad.2013.09.002:(Ca)
tdb: tdb:CaGa-07Wan.tdb:BCC_A2, tdb:CaGa-13Li-1.tdb:BCC_A2, tdb:CaGa-13Li-2.tdb:BCC_A2

TDB models of BCC_A2 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: BCC_A2, type code %B, sha256 c18186f6a4b0008b…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : CA% GA : VA : !

CaGa-13Li-1.tdb: BCC_A2, type code %B, sha256 cc3c61d183edd309…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : CA% GA : VA : !

CaGa-13Li-2.tdb: BCC_A2, type code %B, sha256 3fce55b3480fdf7c…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : CA% GA : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase

CA11GA7 (Ca–Ga)

Id: phase:ca-ga:ca11ga7; status assigned
Structure: Ca11Ga7 · cF144 · Fm-3m (225); type st:ca11ga7-cf144; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Ca 0.6111, Ga 0.3889
Stability: stable in 3 of 3 calculated diagram(s): 300–927.96 K, x(Ga) 0.38889–0.38889
Literature: 12 values (12 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:ca-ga:ca11ga7
mp: mp:mp-aaaabtcc
oqmd: oqmd:oqmd-10983
paper: paper:10.1016/j.calphad.2006.09.004:Ca11Ga7, paper:10.1016/j.calphad.2013.09.002:Ca11Ga7
tdb: tdb:CaGa-07Wan.tdb:CA11GA7, tdb:CaGa-13Li-1.tdb:CA11GA7, tdb:CaGa-13Li-2.tdb:CA11GA7

TDB models of CA11GA7 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CA11GA7, type code %, sha256 c18186f6a4b0008b…

61: PHASE CA11GA7 % 2 11 7 !
62: CONST CA11GA7 : CA : GA : !

CaGa-13Li-1.tdb: CA11GA7, type code %, sha256 cc3c61d183edd309…

60: PHASE CA11GA7 % 2 11 7 !
61: CONST CA11GA7 : CA : GA : !

CaGa-13Li-2.tdb: CA11GA7, type code %, sha256 3fce55b3480fdf7c…

60: PHASE CA11GA7 % 2 11 7 !
61: CONST CA11GA7 : CA : GA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1524/zkri.1989.187.1-2.111 M. L. Fornasini, F. Merlo, The crystal structure of Ca11Ga7, Zeitschrift für Kristallographie 187, 111-115 (1989).
cited as the source of values for this phase

CA25GA59 (Ca–Ga)

Id: phase:ca-ga:ca25ga59; status assigned
Structure: Ca25Ga59 · hP9 · P6/mmm (191); type st:ca25ga59-hp9; 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: Ca 0.2976, Ga 0.7024
Stability: stable in 3 of 3 calculated diagram(s): 300–1245.34 K, x(Ga) 0.70238–0.70238
Literature: 9 values (9 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ca-ga:ca25ga59
paper: paper:10.1016/j.calphad.2006.09.004:Ca25Ga39, paper:10.1016/j.calphad.2013.09.002:Ca25Ga59
tdb: tdb:CaGa-07Wan.tdb:CA25GA59, tdb:CaGa-13Li-1.tdb:CA25GA59, tdb:CaGa-13Li-2.tdb:CA25GA59

TDB models of CA25GA59 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CA25GA59, type code %, sha256 c18186f6a4b0008b…

83: PHASE CA25GA59 % 2 25 59 !
84: CONST CA25GA59 : CA : GA : !

CaGa-13Li-1.tdb: CA25GA59, type code %, sha256 cc3c61d183edd309…

80: PHASE CA25GA59 % 2 25 59 !
81: CONST CA25GA59 : CA : GA : !

CaGa-13Li-2.tdb: CA25GA59, type code %, sha256 3fce55b3480fdf7c…

80: PHASE CA25GA59 % 2 25 59 !
81: CONST CA25GA59 : CA : GA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(89)90171-9 G Bruzzone, M.L Fornasini, F Merlo, Re-examination of the Ca-Ga system and crystal structure of CaGa4, a monoclinic distortion of the BaAl4 type, Journal of the Less Common Metals 154, 67-77 (1989).
cited as the source of values for this phase

CA28GA11 (Ca–Ga)

Id: phase:ca-ga:ca28ga11; status assigned
Structure: Ca28Ga11 · oI178 · Imm2 (44); type st:ca28ga11-oi178; 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: Ca 0.7179, Ga 0.2821
Stability: stable in 3 of 3 calculated diagram(s): 300–820.64 K, x(Ga) 0.28205–0.28205
Literature: 15 values (15 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:ca-ga:ca28ga11
paper: paper:10.1016/j.calphad.2006.09.004:Ca28Ga11, paper:10.1016/j.calphad.2013.09.002:Ca28Ga11, paper:10.1016/j.calphad.2013.09.002:Ga28Ca11
tdb: tdb:CaGa-07Wan.tdb:CA28GA11, tdb:CaGa-13Li-1.tdb:CA28GA11, tdb:CaGa-13Li-2.tdb:CA28GA11

TDB models of CA28GA11 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CA28GA11, type code %, sha256 c18186f6a4b0008b…

51: PHASE CA28GA11 % 2 28 11 !
52: CONST CA28GA11 : CA : GA : !

CaGa-13Li-1.tdb: CA28GA11, type code %, sha256 cc3c61d183edd309…

50: PHASE CA28GA11 % 2 28 11 !
51: CONST CA28GA11 : CA : GA : !

CaGa-13Li-2.tdb: CA28GA11, type code %, sha256 3fce55b3480fdf7c…

50: PHASE CA28GA11 % 2 28 11 !
51: CONST CA28GA11 : CA : GA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase

CA3GA5 (Ca–Ga)

Id: phase:ca-ga:ca3ga5; status assigned
Structure: Ca3Ga5 · oC32 · Cmcm (63); type st:ca3ga5-oc32; 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_3_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ca 0.3750, Ga 0.6250
Stability: stable in 3 of 3 calculated diagram(s): 300–1145.75 K, x(Ga) 0.625–0.625
Literature: 15 values (15 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ca-ga:ca3ga5
paper: paper:10.1016/j.calphad.2006.09.004:Ca3Ga5, paper:10.1016/j.calphad.2013.09.002:Ca3Ga5
tdb: tdb:CaGa-07Wan.tdb:CA3GA5, tdb:CaGa-13Li-1.tdb:CA3GA5, tdb:CaGa-13Li-2.tdb:CA3GA5

TDB models of CA3GA5 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CA3GA5, type code %, sha256 c18186f6a4b0008b…

72: PHASE CA3GA5 % 2 3 5 !
73: CONST CA3GA5 : CA : GA : !

CaGa-13Li-1.tdb: CA3GA5, type code %, sha256 cc3c61d183edd309…

70: PHASE CA3GA5 % 2 3 5 !
71: CONST CA3GA5 : CA : GA : !

CaGa-13Li-2.tdb: CA3GA5, type code %, sha256 3fce55b3480fdf7c…

70: PHASE CA3GA5 % 2 3 5 !
71: CONST CA3GA5 : CA : GA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1002/zaac.19865390805 Gerhard Cordier, Herbert Schäfer, Michael Stelter, Elektronenmangelverbindungen des Galliums Zur Kenntnis von Ca3Ga5, Zeitschrift anorg allge chemie 539, 33-38 (1986).
cited as the source of values for this phase

CA3GA8 (Ca–Ga)

Id: phase:ca-ga:ca3ga8; status assigned
Structure: Eu3Ga8 · oI22 · Immm (71); type st:eu3ga8-oi22; 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: Ca 0.2727, Ga 0.7273
Stability: stable in 3 of 3 calculated diagram(s): 300–1202.84 K, x(Ga) 0.72727–0.72727
Literature: 14 values (14 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ca-ga:ca3ga8
paper: paper:10.1016/j.calphad.2006.09.004:Ca3Ga8, paper:10.1016/j.calphad.2013.09.002:Ca3Ga8
tdb: tdb:CaGa-07Wan.tdb:CA3GA8, tdb:CaGa-13Li-1.tdb:CA3GA8, tdb:CaGa-13Li-2.tdb:CA3GA8

TDB models of CA3GA8 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CA3GA8, type code %, sha256 c18186f6a4b0008b…

88: PHASE CA3GA8 % 2 3 8 !
89: CONST CA3GA8 : CA : GA : !

CaGa-13Li-1.tdb: CA3GA8, type code %, sha256 cc3c61d183edd309…

85: PHASE CA3GA8 % 2 3 8 !
86: CONST CA3GA8 : CA : GA : !

CaGa-13Li-2.tdb: CA3GA8, type code %, sha256 3fce55b3480fdf7c…

85: PHASE CA3GA8 % 2 3 8 !
86: CONST CA3GA8 : CA : GA : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(89)90171-9 G Bruzzone, M.L Fornasini, F Merlo, Re-examination of the Ca-Ga system and crystal structure of CaGa4, a monoclinic distortion of the BaAl4 type, Journal of the Less Common Metals 154, 67-77 (1989).
cited as the source of values for this phase
doi:10.1007/s11663-999-0079-5 B. Prabhakara Reddy, R. Babu, K. Nagarajan, P. R. Vasudeva Rao, Thermodynamics of Ca-Ga alloys, Metall Mater Trans B 30, 459-464 (1999).
cited as the source of values for this phase

CA5GA3_D8L (Ca–Ga)

Id: phase:ca-ga:ca5ga3-d8l; status assigned
Structure: Cr5B3 · D8_l · tI32 · I4/mcm (140); type st:d8-l-cr5b3-ti32; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaacpseg and oqmd-28951, space group 140
Stoichiometry: Ca 0.6250, Ga 0.3750
Stability: stable in 3 of 3 calculated diagram(s): 300–900.26 K, x(Ga) 0.375–0.375
Literature: 8 values (8 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:ca-ga:ca5ga3-d8l
mp: mp:mp-aaacpseg
oqmd: oqmd:oqmd-28951
paper: paper:10.1016/j.calphad.2006.09.004:Ca5Ga3, paper:10.1016/j.calphad.2013.09.002:Ca5Ga3
tdb: tdb:CaGa-07Wan.tdb:CA5GA3_D8L, tdb:CaGa-13Li-1.tdb:CA5GA3_D8L, tdb:CaGa-13Li-2.tdb:CA5GA3_D8L

TDB models of CA5GA3_D8L (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CA5GA3_D8L, type code %, sha256 c18186f6a4b0008b…

56: PHASE CA5GA3_D8L % 2 5 3 !
57: CONST CA5GA3_D8L : CA : GA : !

CaGa-13Li-1.tdb: CA5GA3_D8L, type code %, sha256 cc3c61d183edd309…

55: PHASE CA5GA3_D8L % 2 5 3 !
56: CONST CA5GA3_D8L : CA : GA : !

CaGa-13Li-2.tdb: CA5GA3_D8L, type code %, sha256 3fce55b3480fdf7c…

55: PHASE CA5GA3_D8L % 2 5 3 !
56: CONST CA5GA3_D8L : CA : GA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase

CAGA_B33 (Ca–Ga)

Id: phase:ca-ga:caga-b33; status assigned
Structure: CrB · B33 · oC8 · Cmcm (63); type st:b33-crb-oc8; tier A: standard phase name; confidence high
Stoichiometry: Ca 0.5000, Ga 0.5000
Stability: stable in 3 of 3 calculated diagram(s): 300–1086.77 K, x(Ga) 0.5–0.5
Literature: 8 values (8 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ca-ga:caga-b33
paper: paper:10.1016/j.calphad.2006.09.004:CaGa, paper:10.1016/j.calphad.2013.09.002:CaGa
tdb: tdb:CaGa-07Wan.tdb:CAGA_B33, tdb:CaGa-13Li-1.tdb:CAGA_B33, tdb:CaGa-13Li-2.tdb:CAGA_B33

TDB models of CAGA_B33 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CAGA_B33, type code %, sha256 c18186f6a4b0008b…

66: PHASE CAGA_B33 % 2 1 1 !
67: CONST CAGA_B33 : CA : GA : !

CaGa-13Li-1.tdb: CAGA_B33, type code %, sha256 cc3c61d183edd309…

65: PHASE CAGA_B33 % 2 1 1 !
66: CONST CAGA_B33 : CA : GA : !

CaGa-13Li-2.tdb: CAGA_B33, type code %, sha256 3fce55b3480fdf7c…

65: PHASE CAGA_B33 % 2 1 1 !
66: CONST CAGA_B33 : CA : GA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase

CAGA2 (Ca–Ga)

Id: phase:ca-ga:caga2; status assigned
Structure: CaIn2 · hP6 · P6_3/mmc (194); type st:cain2-hp6; 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_194_matches_3_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ca 0.3333, Ga 0.6667
Stability: stable in 3 of 3 calculated diagram(s): 300–1263.96 K, x(Ga) 0.66667–0.66667
Literature: 20 values (20 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ca-ga:caga2
paper: paper:10.1016/j.calphad.2006.09.004:CaGa2, paper:10.1016/j.calphad.2013.09.002:CaGa2
tdb: tdb:CaGa-07Wan.tdb:CAGA2, tdb:CaGa-13Li-1.tdb:CAGA2, tdb:CaGa-13Li-2.tdb:CAGA2

TDB models of CAGA2 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CAGA2, type code %, sha256 c18186f6a4b0008b…

77: PHASE CAGA2 % 2 1 2 !
78: CONST CAGA2 : CA : GA : !

CaGa-13Li-1.tdb: CAGA2, type code %, sha256 cc3c61d183edd309…

75: PHASE CAGA2 % 2 1 2 !
76: CONST CAGA2 : CA : GA : !

CaGa-13Li-2.tdb: CAGA2, type code %, sha256 3fce55b3480fdf7c…

75: PHASE CAGA2 % 2 1 2 !
76: CONST CAGA2 : CA : GA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(89)90171-9 G Bruzzone, M.L Fornasini, F Merlo, Re-examination of the Ca-Ga system and crystal structure of CaGa4, a monoclinic distortion of the BaAl4 type, Journal of the Less Common Metals 154, 67-77 (1989).
cited as the source of values for this phase

CAGA4 (Ca–Ga)

Id: phase:ca-ga:caga4; status assigned
Structure: CaGa4 · mC10 · C2/m (12); type st:caga4-mc10; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ca 0.2000, Ga 0.8000
Stability: stable in 3 of 3 calculated diagram(s): 300–1027.43 K, x(Ga) 0.8–0.8
Literature: 16 values (16 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ca-ga:caga4
paper: paper:10.1016/j.calphad.2006.09.004:CaGa4, paper:10.1016/j.calphad.2013.09.002:CaGa4
tdb: tdb:CaGa-07Wan.tdb:CAGA4, tdb:CaGa-13Li-1.tdb:CAGA4, tdb:CaGa-13Li-2.tdb:CAGA4

TDB models of CAGA4 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: CAGA4, type code %, sha256 c18186f6a4b0008b…

93: PHASE CAGA4 % 2 1 4 !
94: CONST CAGA4 : CA : GA : !

CaGa-13Li-1.tdb: CAGA4, type code %, sha256 cc3c61d183edd309…

90: PHASE CAGA4 % 2 1 4 !
91: CONST CAGA4 : CA : GA : !

CaGa-13Li-2.tdb: CAGA4, type code %, sha256 3fce55b3480fdf7c…

90: PHASE CAGA4 % 2 1 4 !
91: CONST CAGA4 : CA : GA : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(89)90171-9 G Bruzzone, M.L Fornasini, F Merlo, Re-examination of the Ca-Ga system and crystal structure of CaGa4, a monoclinic distortion of the BaAl4 type, Journal of the Less Common Metals 154, 67-77 (1989).
cited as the source of values for this phase
doi:10.1007/s11663-999-0079-5 B. Prabhakara Reddy, R. Babu, K. Nagarajan, P. R. Vasudeva Rao, Thermodynamics of Ca-Ga alloys, Metall Mater Trans B 30, 459-464 (1999).
cited as the source of values for this phase

FCC_A1 (Ca–Ga)

Id: phase:ca-ga: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 3 of 3 calculated diagram(s): 300–716.03 K, x(Ga) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ca-ga:fcc-a1
tdb: tdb:CaGa-07Wan.tdb:FCC_A1, tdb:CaGa-13Li-1.tdb:FCC_A1, tdb:CaGa-13Li-2.tdb:FCC_A1

TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: FCC_A1, type code %A, sha256 c18186f6a4b0008b…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : CA% GA : VA : !

CaGa-13Li-1.tdb: FCC_A1, type code %A, sha256 cc3c61d183edd309…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : CA% GA : VA : !

CaGa-13Li-2.tdb: FCC_A1, type code %A, sha256 3fce55b3480fdf7c…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : CA% GA : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase
doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase

HCP_A3 (Ca–Ga)

Id: phase:ca-ga: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 3 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ca-ga:hcp-a3
tdb: tdb:CaGa-07Wan.tdb:HCP_A3, tdb:CaGa-13Li-1.tdb:HCP_A3, tdb:CaGa-13Li-2.tdb:HCP_A3

TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written

CaGa-07Wan.tdb: HCP_A3, type code %A, sha256 c18186f6a4b0008b…

41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : CA GA : VA : !

CaGa-13Li-1.tdb: HCP_A3, type code %A, sha256 cc3c61d183edd309…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : CA GA : VA : !

CaGa-13Li-2.tdb: HCP_A3, type code %A, sha256 3fce55b3480fdf7c…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : CA GA : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase
doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase

LIQUID (Ca–Ga)

Id: phase:ca-ga:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 301.69–2500 K, x(Ga) 0–1
Literature: 46 values (46 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:ca-ga:liquid
paper: paper:10.1016/j.calphad.2006.09.004:L, paper:10.1016/j.calphad.2006.09.004:liquid, paper:10.1016/j.calphad.2013.09.002:L, paper:10.1016/j.calphad.2013.09.002:Liquid
tdb: tdb:CaGa-07Wan.tdb:LIQUID, tdb:CaGa-13Li-1.tdb:LIQUID, tdb:CaGa-13Li-2.tdb:LIQUID

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

CaGa-07Wan.tdb: LIQUID, type code %, sha256 c18186f6a4b0008b…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : CA GA : !

CaGa-13Li-1.tdb: LIQUID, type code %, sha256 cc3c61d183edd309…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : CA GA : !

CaGa-13Li-2.tdb: LIQUID, type code %, sha256 3fce55b3480fdf7c…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : CA GA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2006.09.004 J.F. Wang, W.X. Yuan, X. Zhao, W.L. Qian, Z.F. Cai, Thermodynamic description of the Ca–Ga system, Calphad 31, 120-124 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2013.09.002 Xi Li, Kaiming Cheng, Xiaoming Yuan, Dongdong Zhao, Jinghua Xin, Weiwei Wang et al., Thermodynamic assessment of the Ga–X (X=B, Ca, Sr, Ba) systems supported by first-principles calculations, Calphad 43, 52-60 (2013).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(89)90171-9 G Bruzzone, M.L Fornasini, F Merlo, Re-examination of the Ca-Ga system and crystal structure of CaGa4, a monoclinic distortion of the BaAl4 type, Journal of the Less Common Metals 154, 67-77 (1989).
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}
}