Ge–Zr phases

10 phases (tier A 7, tier B 1, tier C 1, liquid 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 · Ge–Zr system page · Markdown · field reference

Phases of the Ge–Zr system (10)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
DIAMOND_A4 phase:ge-zr:a4-diamond	C (diamond) · A4 · cF8 · Fd-3m (227)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1211.4 K, x(Zr) 0–0	3	1
BCC_A2 phase:ge-zr:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300.62–3589.4 K, x(Zr) 0.99064–1	4	1
FCC_A1 phase:ge-zr:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
GE2ZR_C49 phase:ge-zr:ge2zr-c49	ZrSi2 · C49 · oC12 · Cmcm (63)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1793.07 K, x(Zr) 0.33333–0.33333	4	1
GE3ZR5_D88 phase:ge-zr:ge3zr5-d88	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2612.53 K, x(Zr) 0.625–0.625	5	1
GE4ZR5 phase:ge-zr:ge4zr5	Si4Zr5 · tP36 · P4_12_12 (92)	tier B: DFT-supported (unique MP + OQMD match)	stable in 1 of 1 calculated diagram(s): 300–2537.53 K, x(Zr) 0.55556–0.55556	3	1
GEZR_B27 phase:ge-zr:gezr-b27	FeB · B27 · oP8 · Pnma (62)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2497.63 K, x(Zr) 0.5–0.5	4	1
GEZR3 phase:ge-zr:gezr3	Ti3P · tP32 · P4_2/n (86)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1864.93 K, x(Zr) 0.75–0.75	6	1
HCP_A3 phase:ge-zr:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1168.84 K, x(Zr) 0.99058–1	2	1
LIQUID phase:ge-zr:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 1206.93–4000 K, x(Zr) 0–1	13	1

DIAMOND_A4 (Ge–Zr)

Id: phase:ge-zr:a4-diamond; status assigned
Structure: C (diamond) · A4 · cF8 · Fd-3m (227); type st:a4-c-diamond-cf8; tier A: standard phase name; confidence high
Stoichiometry: Ge 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–1211.4 K, x(Zr) 0–0
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-zr:a4-diamond, corpus:phase:ge-zr:diamond-a4
paper: paper:10.1007/s10853-010-4934-1:(Ge), paper:10.1007/s10853-010-4934-1:Ge
tdb: tdb:GeZr-11Sha.tdb:DIAMOND_A4

TDB models of DIAMOND_A4 (1): PHASE and CONSTITUENT statements as written

GeZr-11Sha.tdb: DIAMOND_A4, type code %, sha256 407ab2d6f3ec81a0…

41: PHASE DIAMOND_A4 % 1 1 !
42: CONST DIAMOND_A4 : GE : !

Example references (2 of 2; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02874981 Abriata JP, Block JC, Arias D (1986) Bull Alloy Phase Diagr 7:43 1413
cited as the source of values for this phase

BCC_A2 (Ge–Zr)

Id: phase:ge-zr: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): 300.62–3589.4 K, x(Zr) 0.99064–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ge-zr:bcc-a2
paper: paper:10.1007/s10853-010-4934-1:(βZr)
tdb: tdb:GeZr-11Sha.tdb:BCC_A2

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

GeZr-11Sha.tdb: BCC_A2, type code %B, sha256 407ab2d6f3ec81a0…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : GE ZR% : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase

FCC_A1 (Ge–Zr)

Id: phase:ge-zr:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
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:ge-zr:fcc-a1
tdb: tdb:GeZr-11Sha.tdb:FCC_A1

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

GeZr-11Sha.tdb: FCC_A1, type code %A, sha256 407ab2d6f3ec81a0…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : GE ZR : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase

GE2ZR_C49 (Ge–Zr)

Id: phase:ge-zr:ge2zr-c49; status assigned
Structure: ZrSi2 · C49 · oC12 · Cmcm (63); type st:c49-zrsi2-oc12; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaadpm and oqmd-3541, space group 63
Stoichiometry: Ge 0.6667, Zr 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1793.07 K, x(Zr) 0.33333–0.33333
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-zr:ge2zr-c49
mp: mp:mp-aaaaadpm
oqmd: oqmd:oqmd-3541
paper: paper:10.1007/s10853-010-4934-1:ZrGe2
tdb: tdb:GeZr-11Sha.tdb:GE2ZR_C49

TDB models of GE2ZR_C49 (1): PHASE and CONSTITUENT statements as written

GeZr-11Sha.tdb: GE2ZR_C49, type code %, sha256 407ab2d6f3ec81a0…

46: PHASE GE2ZR_C49 % 2 2 1 !
47: CONST GE2ZR_C49 : GE : ZR : !

Example references (2 of 2; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02874981 Abriata JP, Block JC, Arias D (1986) Bull Alloy Phase Diagr 7:43 1413
cited as the source of values for this phase

GE3ZR5_D88 (Ge–Zr)

Id: phase:ge-zr:ge3zr5-d88; status assigned
Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type st:d8-8-mn5si3-hp16; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaabafa and oqmd-13725, space group 193
Stoichiometry: Ge 0.3750, Zr 0.6250
Stability: stable in 1 of 1 calculated diagram(s): 300–2612.53 K, x(Zr) 0.625–0.625
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-zr:ge3zr5-d88
mp: mp:mp-aaaabafa
oqmd: oqmd:oqmd-13725
paper: paper:10.1007/s10853-010-4934-1:Zr5Ge3
tdb: tdb:GeZr-11Sha.tdb:GE3ZR5_D88

TDB models of GE3ZR5_D88 (1): PHASE and CONSTITUENT statements as written

GeZr-11Sha.tdb: GE3ZR5_D88, type code %, sha256 407ab2d6f3ec81a0…

61: PHASE GE3ZR5_D88 % 2 3 5 !
62: CONST GE3ZR5_D88 : GE : ZR : !

Example references (1 of 1; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase

GE4ZR5 (Ge–Zr)

Id: phase:ge-zr:ge4zr5; status assigned
Structure: Si4Zr5 · tP36 · P4_12_12 (92); type st:si4zr5-tp36; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Ge 0.4444, Zr 0.5556
Stability: stable in 1 of 1 calculated diagram(s): 300–2537.53 K, x(Zr) 0.55556–0.55556
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-zr:ge4zr5
mp: mp:mp-aaacqigr
oqmd: oqmd:oqmd-2052678
paper: paper:10.1007/s10853-010-4934-1:Zr5Ge4
tdb: tdb:GeZr-11Sha.tdb:GE4ZR5

TDB models of GE4ZR5 (1): PHASE and CONSTITUENT statements as written

GeZr-11Sha.tdb: GE4ZR5, type code %, sha256 407ab2d6f3ec81a0…

56: PHASE GE4ZR5 % 2 4 5 !
57: CONST GE4ZR5 : GE : ZR : !

Example references (1 of 1; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase

GEZR_B27 (Ge–Zr)

Id: phase:ge-zr:gezr-b27; status assigned
Structure: FeB · B27 · oP8 · Pnma (62); type st:b27-feb-op8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaacgjav and oqmd-30506, space group 62
Stoichiometry: Ge 0.5000, Zr 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–2497.63 K, x(Zr) 0.5–0.5
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ge-zr:gezr-b27
mp: mp:mp-aaacgjav
oqmd: oqmd:oqmd-30506
paper: paper:10.1007/s10853-010-4934-1:ZrGe
tdb: tdb:GeZr-11Sha.tdb:GEZR_B27

TDB models of GEZR_B27 (1): PHASE and CONSTITUENT statements as written

GeZr-11Sha.tdb: GEZR_B27, type code %, sha256 407ab2d6f3ec81a0…

51: PHASE GEZR_B27 % 2 1 1 !
52: CONST GEZR_B27 : GE : ZR : !

Example references (1 of 1; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase

GEZR3 (Ge–Zr)

Id: phase:ge-zr:gezr3; status assigned
Structure: Ti3P · tP32 · P4_2/n (86); type st:ti3p-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 (no_on_hull_entry_in_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ge 0.2500, Zr 0.7500
Stability: stable in 1 of 1 calculated diagram(s): 300–1864.93 K, x(Zr) 0.75–0.75
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ge-zr:gezr3
paper: paper:10.1007/s10853-010-4934-1:Zr3Ge
tdb: tdb:GeZr-11Sha.tdb:GEZR3

TDB models of GEZR3 (1): PHASE and CONSTITUENT statements as written

GeZr-11Sha.tdb: GEZR3, type code %, sha256 407ab2d6f3ec81a0…

66: PHASE GEZR3 % 2 1 3 !
67: CONST GEZR3 : GE : ZR : !

Example references (1 of 1; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase

HCP_A3 (Ge–Zr)

Id: phase:ge-zr: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: stable in 1 of 1 calculated diagram(s): 300–1168.84 K, x(Zr) 0.99058–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ge-zr:hcp-a3
paper: paper:10.1007/s10853-010-4934-1:(αZr)
tdb: tdb:GeZr-11Sha.tdb:HCP_A3

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

GeZr-11Sha.tdb: HCP_A3, type code %, sha256 407ab2d6f3ec81a0…

36: PHASE HCP_A3 % 2 1 0.5 !
37: CONST HCP_A3 : GE ZR% : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase

LIQUID (Ge–Zr)

Id: phase:ge-zr:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1206.93–4000 K, x(Zr) 0–1
Literature: 13 values (13 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ge-zr:liquid
paper: paper:10.1007/s10853-010-4934-1:Liquid
tdb: tdb:GeZr-11Sha.tdb:LIQUID

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

GeZr-11Sha.tdb: LIQUID, type code %, sha256 407ab2d6f3ec81a0…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : GE ZR : !

Example references (2 of 2; assessments first):

doi:10.1007/s10853-010-4934-1 Chunsheng Sha, Liangcai Zhou, Shuhong Liu, Yong Du, Tie Gang, Honghui Xu, Phase equilibria and thermodynamic modeling in the Ge–Zr binary system, J Mater Sci 46, 1405-1413 (2011).
assessment that models this phase; reports values for this phase
doi:10.1007/bf02874981 Abriata JP, Block JC, Arias D (1986) Bull Alloy Phase Diagr 7:43 1413
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}
}