Ga–Pr phases

12 phases (tier A 9, tier B 1, tier C 1, liquid 1); 10 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 · Ga–Pr system page · Markdown · field reference

Phases of the Ga–Pr system (12)
Phase	Structure	Basis	Stability (calculated)	TDB models
ORTHORHOMBIC_A11 phase:ga-pr:a11-orthorhombic	alpha-Ga · A11 · oC8 · Cmce (64)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–302.91 K, x(Pr) 0–0	1
BCC_A2 phase:ga-pr:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1017.71–1205 K, x(Pr) 0.97619–1	1
DHCP phase:ga-pr:dhcp-a3	alpha-La · A3' · hP4 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1068 K, x(Pr) 0.97807–1	1
FCC_A1 phase:ga-pr:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	1
GA2PR_C32 phase:ga-pr:ga2pr-c32	AlB2 · C32 · hP3 · P6/mmm (191)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1744.82 K, x(Pr) 0.33333–0.33333	1
GA3PR_D019 phase:ga-pr:ga3pr-d019	Ni3Sn · D0_19 · hP8 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–899.82 K, x(Pr) 0.25–0.25	1
GA3PR5 phase:ga-pr:ga3pr5	Ba5Si3 · tP32 · P4/ncc (130)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1128.25 K, x(Pr) 0.625–0.625	1
GA6PR phase:ga-pr:ga6pr	Ga6Pu · tP14 · P4/nbm (125)	tier B: DFT-supported (unique MP + OQMD match)	stable in 1 of 1 calculated diagram(s): 300–741.73 K, x(Pr) 0.14286–0.14286	1
GAPR_B33 phase:ga-pr:gapr-b33	CrB · B33 · oC8 · Cmcm (63)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1288.26 K, x(Pr) 0.5–0.5	1
GAPR2_C37 phase:ga-pr:gapr2-c37	Co2Si · C37 · oP12 · Pnma (62)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–965.54 K, x(Pr) 0.66667–0.66667	1
HCP_A3 phase:ga-pr:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	1
LIQUID phase:ga-pr:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 302.91–2500 K, x(Pr) 0–1	1

ORTHORHOMBIC_A11 (Ga–Pr)

Id: phase:ga-pr: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 1 of 1 calculated diagram(s): 300–302.91 K, x(Pr) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ga-pr:a11-orthorhombic
tdb: tdb:GaPr-22Bou.tdb:ORTHORHOMBIC_A11

TDB models of ORTHORHOMBIC_A11 (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: ORTHORHOMBIC_A11, type code %, sha256 8876340cccf83107…

57: PHASE ORTHORHOMBIC_A11 % 1 1 !
58: CONST ORTHORHOMBIC_A11 : GA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

BCC_A2 (Ga–Pr)

Id: phase:ga-pr: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 1 of 1 calculated diagram(s): 1017.71–1205 K, x(Pr) 0.97619–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ga-pr:bcc-a2
tdb: tdb:GaPr-22Bou.tdb:BCC_A2

TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: BCC_A2, type code %B, sha256 8876340cccf83107…

42: PHASE BCC_A2 %B 2 1 3 !
43: CONST BCC_A2 : GA PR% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

DHCP (Ga–Pr)

Id: phase:ga-pr: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 1 of 1 calculated diagram(s): 300–1068 K, x(Pr) 0.97807–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ga-pr:dhcp-a3
tdb: tdb:GaPr-22Bou.tdb:DHCP

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

GaPr-22Bou.tdb: DHCP, type code %, sha256 8876340cccf83107…

52: PHASE DHCP % 1 1 !
53: CONST DHCP : GA PR% : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

FCC_A1 (Ga–Pr)

Id: phase:ga-pr:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stoichiometry: Ga 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:ga-pr:fcc-a1
tdb: tdb:GaPr-22Bou.tdb:FCC_A1

TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: FCC_A1, type code %A, sha256 8876340cccf83107…

37: PHASE FCC_A1 %A 2 1 1 !
38: CONST FCC_A1 : GA : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

GA2PR_C32 (Ga–Pr)

Id: phase:ga-pr:ga2pr-c32; status assigned
Structure: AlB2 · C32 · hP3 · P6/mmm (191); type st:c32-alb2-hp3; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaaazs and oqmd-109626, space group 191
Stoichiometry: Ga 0.6667, Pr 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1744.82 K, x(Pr) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ga-pr:ga2pr-c32
mp: mp:mp-aaaaaazs
oqmd: oqmd:oqmd-109626
tdb: tdb:GaPr-22Bou.tdb:GA2PR_C32

TDB models of GA2PR_C32 (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: GA2PR_C32, type code %, sha256 8876340cccf83107…

72: PHASE GA2PR_C32 % 2 2 1 !
73: CONST GA2PR_C32 : GA : PR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

GA3PR_D019 (Ga–Pr)

Id: phase:ga-pr:ga3pr-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-aaabxcgy and oqmd-318795, space group 194
Stoichiometry: Ga 0.7500, Pr 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 300–899.82 K, x(Pr) 0.25–0.25
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ga-pr:ga3pr-d019
mp: mp:mp-aaabxcgy
oqmd: oqmd:oqmd-318795
tdb: tdb:GaPr-22Bou.tdb:GA3PR_D019

TDB models of GA3PR_D019 (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: GA3PR_D019, type code %, sha256 8876340cccf83107…

67: PHASE GA3PR_D019 % 2 3 1 !
68: CONST GA3PR_D019 : GA : PR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

GA3PR5 (Ga–Pr)

Id: phase:ga-pr:ga3pr5; status assigned
Structure: Ba5Si3 · tP32 · P4/ncc (130); type st:ba5si3-tp32; 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_130_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ga 0.3750, Pr 0.6250
Stability: stable in 1 of 1 calculated diagram(s): 300–1128.25 K, x(Pr) 0.625–0.625
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ga-pr:ga3pr5
tdb: tdb:GaPr-22Bou.tdb:GA3PR5

TDB models of GA3PR5 (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: GA3PR5, type code %, sha256 8876340cccf83107…

82: PHASE GA3PR5 % 2 3 5 !
83: CONST GA3PR5 : GA : PR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

GA6PR (Ga–Pr)

Id: phase:ga-pr:ga6pr; status assigned
Structure: Ga6Pu · tP14 · P4/nbm (125); type st:ga6pu-tp14; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Ga 0.8571, Pr 0.1429
Stability: stable in 1 of 1 calculated diagram(s): 300–741.73 K, x(Pr) 0.14286–0.14286
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ga-pr:ga6pr
mp: mp:mp-aaackvgg
oqmd: oqmd:oqmd-1484078
tdb: tdb:GaPr-22Bou.tdb:GA6PR

TDB models of GA6PR (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: GA6PR, type code %, sha256 8876340cccf83107…

62: PHASE GA6PR % 2 6 1 !
63: CONST GA6PR : GA : PR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

GAPR_B33 (Ga–Pr)

Id: phase:ga-pr:gapr-b33; status assigned
Structure: CrB · B33 · oC8 · Cmcm (63); type st:b33-crb-oc8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaaqwq and oqmd-89597, space group 63
Stoichiometry: Ga 0.5000, Pr 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1288.26 K, x(Pr) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ga-pr:gapr-b33
mp: mp:mp-aaaaaqwq
oqmd: oqmd:oqmd-89597
tdb: tdb:GaPr-22Bou.tdb:GAPR_B33

TDB models of GAPR_B33 (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: GAPR_B33, type code %, sha256 8876340cccf83107…

77: PHASE GAPR_B33 % 2 1 1 !
78: CONST GAPR_B33 : GA : PR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

GAPR2_C37 (Ga–Pr)

Id: phase:ga-pr:gapr2-c37; status assigned
Structure: Co2Si · C37 · oP12 · Pnma (62); type st:c37-co2si-op12; tier A: standard phase name; confidence high
Stoichiometry: Ga 0.3333, Pr 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–965.54 K, x(Pr) 0.66667–0.66667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ga-pr:gapr2-c37
tdb: tdb:GaPr-22Bou.tdb:GAPR2_C37

TDB models of GAPR2_C37 (1): PHASE and CONSTITUENT statements as written

GaPr-22Bou.tdb: GAPR2_C37, type code %, sha256 8876340cccf83107…

87: PHASE GAPR2_C37 % 2 1 2 !
88: CONST GAPR2_C37 : GA : PR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

HCP_A3 (Ga–Pr)

Id: phase:ga-pr: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: Ga 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:ga-pr:hcp-a3
tdb: tdb:GaPr-22Bou.tdb:HCP_A3

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

GaPr-22Bou.tdb: HCP_A3, type code %A, sha256 8876340cccf83107…

47: PHASE HCP_A3 %A 2 1 0.5 !
48: CONST HCP_A3 : GA : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models this phase

LIQUID (Ga–Pr)

Id: phase:ga-pr:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 302.91–2500 K, x(Pr) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ga-pr:liquid
tdb: tdb:GaPr-22Bou.tdb:LIQUID

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

GaPr-22Bou.tdb: LIQUID, type code %, sha256 8876340cccf83107…

32: PHASE LIQUID:L % 1 1 !
33: CONST LIQUID:L : GA GA2PR PR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2021.102387 S. Boudraa, Y. Djaballah, Y. Mansouri, A. Belgacem Bouzida, Calphad, 76, 102387(2022).
assessment that models 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}
}