Ga–N phases

5 phases (tier A 2, liquid 1, gas 2); 5 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–N system page · Markdown · field reference

Phases of the Ga–N system (5)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
ORTHORHOMBIC_A11 phase:ga-n:a11-orthorhombic	alpha-Ga · A11 · oC8 · Cmce (64)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–302.91 K, x(N) 0–0	1	2
GAN_B4 phase:ga-n:gan-b4	ZnS (wurtzite) · B4 · hP4 · P6_3mc (186)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1117.53 K, x(N) 0.5–0.5	4	2
GAS phase:ga-n:gas	gas	gas	stable in 2 of 2 calculated diagram(s): 300.03–2500 K, x(N) 0–1	0	2
LIQUID phase:ga-n:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 302.91–2473.18 K, x(N) 0–2e-05	1	2
N2GAS phase:ga-n:n2gas	gas	gas	stable in 2 of 2 calculated diagram(s): 300–1065 K, x(N) 1–1	0	2

ORTHORHOMBIC_A11 (Ga–N)

Id: phase:ga-n: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 2 of 2 calculated diagram(s): 300–302.91 K, x(N) 0–0
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ga-n:a11-orthorhombic
paper: paper:10.1016/s0022-0248(03)01352-6:Ga
tdb: tdb:GaN-03Unl.tdb:ORTHORHOMBIC_A11, tdb:GaN-98Dav.tdb:ORTHORHOMBIC_A11

TDB models of ORTHORHOMBIC_A11 (2): PHASE and CONSTITUENT statements as written

GaN-03Unl.tdb: ORTHORHOMBIC_A11, type code %, sha256 eb023f7ceb4ad845…

34: PHASE ORTHORHOMBIC_A11 % 1 1 !
35: CONST ORTHORHOMBIC_A11 : GA : !

GaN-98Dav.tdb: ORTHORHOMBIC_A11, type code %, sha256 879d60b9d25803c8…

34: PHASE ORTHORHOMBIC_A11 % 1 1 !
35: CONST ORTHORHOMBIC_A11 : GA : !

Example references (1 of 1; assessments first):

doi:10.1016/S0022-0248(03)01352-6 J. Unland, B. Onderka, A. Davydov, R. Schmid-Fetzer, J. Cryst. Growth, 256, 33-51(2003).
assessment that models this phase; reports values for this phase

GAN_B4 (Ga–N)

Id: phase:ga-n:gan-b4; status assigned
Structure: ZnS (wurtzite) · B4 · hP4 · P6_3mc (186); type st:b4-zns-wurtzite-hp4; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaabey and oqmd-6450, space group 186
Stoichiometry: Ga 0.5000, N 0.5000
Stability: stable in 2 of 2 calculated diagram(s): 300–1117.53 K, x(N) 0.5–0.5
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:ga-n:gan-b4
mp: mp:mp-aaaaabey
oqmd: oqmd:oqmd-6450
paper: paper:10.1016/s0022-0248(03)01352-6:GaN
tdb: tdb:GaN-03Unl.tdb:GAN_B4, tdb:GaN-98Dav.tdb:GAN_B4

TDB models of GAN_B4 (2): PHASE and CONSTITUENT statements as written

GaN-03Unl.tdb: GAN_B4, type code %, sha256 eb023f7ceb4ad845…

39: PHASE GAN_B4 % 2 1 1 !
40: CONST GAN_B4 : GA : N : !

GaN-98Dav.tdb: GAN_B4, type code %, sha256 879d60b9d25803c8…

39: PHASE GAN_B4 % 2 1 1 !
40: CONST GAN_B4 : GA : N : !

Example references (2 of 2; assessments first):

doi:10.1016/S0022-0248(03)01352-6 J. Unland, B. Onderka, A. Davydov, R. Schmid-Fetzer, J. Cryst. Growth, 256, 33-51(2003).
assessment that models this phase; reports values for this phase
doi:10.1002/zaac.19402440203 Harry Hahn, Robert Juza, Untersuchungen über die Nitride von Cadmium, Gallium, Indium und Germanium. Metallamide und Metallnitride. VIII. Mitteilung, Z. Anorg. Allg. Chem. 244, 111-124 (1940).
cited as the source of values for this phase

GAS (Ga–N)

Id: phase:ga-n:gas; status assigned
Structure: gas; type st:gas; gas; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 300.03–2500 K, x(N) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ga-n:gas
tdb: tdb:GaN-03Unl.tdb:GAS, tdb:GaN-98Dav.tdb:GAS

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

GaN-03Unl.tdb: GAS, type code %, sha256 eb023f7ceb4ad845…

45: PHASE GAS:G % 1 1 !
46: CONST GAS:G : GA GA2 N N2 N3 : !

GaN-98Dav.tdb: GAS, type code %, sha256 879d60b9d25803c8…

45: PHASE GAS:G % 1 1 !
46: CONST GAS:G : GA GA2 N N2 N3 : !

Example references (1 of 1; assessments first):

doi:10.1016/S0022-0248(03)01352-6 J. Unland, B. Onderka, A. Davydov, R. Schmid-Fetzer, J. Cryst. Growth, 256, 33-51(2003).
assessment that models this phase

LIQUID (Ga–N)

Id: phase:ga-n:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 302.91–2473.18 K, x(N) 0–2e-05
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ga-n:liquid
paper: paper:10.1016/s0022-0248(03)01352-6:liquid
tdb: tdb:GaN-03Unl.tdb:LIQUID, tdb:GaN-98Dav.tdb:LIQUID

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

GaN-03Unl.tdb: LIQUID, type code %, sha256 eb023f7ceb4ad845…

29: PHASE LIQUID:L % 1 1 !
30: CONST LIQUID:L : GA N : !

GaN-98Dav.tdb: LIQUID, type code %, sha256 879d60b9d25803c8…

29: PHASE LIQUID:L % 1 1 !
30: CONST LIQUID:L : GA N : !

Example references (1 of 1; assessments first):

doi:10.1016/S0022-0248(03)01352-6 J. Unland, B. Onderka, A. Davydov, R. Schmid-Fetzer, J. Cryst. Growth, 256, 33-51(2003).
assessment that models this phase; reports values for this phase

N2GAS (Ga–N)

Id: phase:ga-n:n2gas; status assigned
Structure: gas; type st:gas; gas; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 300–1065 K, x(N) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ga-n:n2gas
tdb: tdb:GaN-03Unl.tdb:N2GAS, tdb:GaN-98Dav.tdb:N2GAS

TDB models of N2GAS (2): PHASE and CONSTITUENT statements as written

GaN-03Unl.tdb: N2GAS, type code %, sha256 eb023f7ceb4ad845…

42: PHASE N2GAS % 1 1 !
43: CONST N2GAS : N2 : !

GaN-98Dav.tdb: N2GAS, type code %, sha256 879d60b9d25803c8…

42: PHASE N2GAS % 1 1 !
43: CONST N2GAS : N2 : !

Example references (1 of 1; assessments first):

doi:10.1016/S0022-0248(03)01352-6 J. Unland, B. Onderka, A. Davydov, R. Schmid-Fetzer, J. Cryst. Growth, 256, 33-51(2003).
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}
}