P–Sb phases

8 phases (tier A 4, liquid 1, gas 1, needs_review 2); 4 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 · Markdown · field reference

Phases of the P–Sb system (8)
Phase	Structure	Basis	Stability (calculated)	TDB models
RHOMBOHEDRAL_A7 phase:p-sb:a7-rhombohedral	alpha-As · A7 · hR2 · R-3m (166)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–903.78 K, x(P) 0–0.00025	1
BCC_A2 phase:p-sb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	not stable in 1 calculated diagram(s)	1
FCC_A1 phase:p-sb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	1
GAS phase:p-sb:gas	gas	gas	stable in 1 of 1 calculated diagram(s): 381.97–2500 K, x(P) 0–1	1
HCP_A3 phase:p-sb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	1
LIQUID phase:p-sb:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 888.91–1830 K, x(P) 0–0.04251	1
RED_P phase:p-sb:p-red		needs_review	stable in 1 of 1 calculated diagram(s): 300–919.47 K, x(P) 1–1	1
WHITE_P phase:p-sb:p-white		needs_review	not stable in 1 calculated diagram(s)	1

RHOMBOHEDRAL_A7 (P–Sb)

Id: phase:p-sb:a7-rhombohedral; status assigned
Structure: alpha-As · A7 · hR2 · R-3m (166); type st:a7-alpha-as-hr2; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–903.78 K, x(P) 0–0.00025
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:p-sb:a7-rhombohedral
tdb: tdb:SbP-94Ans-LB.tdb:RHOMBOHEDRAL_A7

TDB models of RHOMBOHEDRAL_A7 (1): PHASE and CONSTITUENT statements as written

SbP-94Ans-LB.tdb: RHOMBOHEDRAL_A7, type code %, sha256 d2d3f96ce75bac94…

53: PHASE RHOMBOHEDRAL_A7 % 1 1 !
54: CONST RHOMBOHEDRAL_A7 : P SB% : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(94)90027-2 I. Ansara, C. Chatillon, H.L. Lukas, T. Nishizawa, H. Ohtani, K. Ishida et al., A binary database for III–V compound semiconductor systems, Calphad 18, 177-222 (1994).
assessment that models this phase

BCC_A2 (P–Sb)

Id: phase:p-sb:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; 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:p-sb:bcc-a2
tdb: tdb:SbP-94Ans-LB.tdb:BCC_A2

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

SbP-94Ans-LB.tdb: BCC_A2, type code %B, sha256 d2d3f96ce75bac94…

43: PHASE BCC_A2 %B 2 1 3 !
44: CONST BCC_A2 : P SB : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(94)90027-2 I. Ansara, C. Chatillon, H.L. Lukas, T. Nishizawa, H. Ohtani, K. Ishida et al., A binary database for III–V compound semiconductor systems, Calphad 18, 177-222 (1994).
assessment that models this phase

FCC_A1 (P–Sb)

Id: phase:p-sb: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:p-sb:fcc-a1
tdb: tdb:SbP-94Ans-LB.tdb:FCC_A1

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

SbP-94Ans-LB.tdb: FCC_A1, type code %A, sha256 d2d3f96ce75bac94…

38: PHASE FCC_A1 %A 2 1 1 !
39: CONST FCC_A1 : P SB : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(94)90027-2 I. Ansara, C. Chatillon, H.L. Lukas, T. Nishizawa, H. Ohtani, K. Ishida et al., A binary database for III–V compound semiconductor systems, Calphad 18, 177-222 (1994).
assessment that models this phase

GAS (P–Sb)

Id: phase:p-sb:gas; status assigned
Structure: gas; type st:gas; gas; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 381.97–2500 K, x(P) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:p-sb:gas
tdb: tdb:SbP-94Ans-LB.tdb:GAS

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

SbP-94Ans-LB.tdb: GAS, type code %, sha256 d2d3f96ce75bac94…

66: PHASE GAS:G % 1 1 !
67: CONST GAS:G : P P2 P3 P4 SB SB2 SB3 SB4 SBP SBP3 : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(94)90027-2 I. Ansara, C. Chatillon, H.L. Lukas, T. Nishizawa, H. Ohtani, K. Ishida et al., A binary database for III–V compound semiconductor systems, Calphad 18, 177-222 (1994).
assessment that models this phase

HCP_A3 (P–Sb)

Id: phase:p-sb: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: Sb 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:p-sb:hcp-a3
tdb: tdb:SbP-94Ans-LB.tdb:HCP_A3

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

SbP-94Ans-LB.tdb: HCP_A3, type code %A, sha256 d2d3f96ce75bac94…

48: PHASE HCP_A3 %A 2 1 0.5 !
49: CONST HCP_A3 : SB : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(94)90027-2 I. Ansara, C. Chatillon, H.L. Lukas, T. Nishizawa, H. Ohtani, K. Ishida et al., A binary database for III–V compound semiconductor systems, Calphad 18, 177-222 (1994).
assessment that models this phase

LIQUID (P–Sb)

Id: phase:p-sb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 888.91–1830 K, x(P) 0–0.04251
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:p-sb:liquid
tdb: tdb:SbP-94Ans-LB.tdb:LIQUID

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

SbP-94Ans-LB.tdb: LIQUID, type code %, sha256 d2d3f96ce75bac94…

33: PHASE LIQUID:L % 1 1 !
34: CONST LIQUID:L : P SB : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(94)90027-2 I. Ansara, C. Chatillon, H.L. Lukas, T. Nishizawa, H. Ohtani, K. Ishida et al., A binary database for III–V compound semiconductor systems, Calphad 18, 177-222 (1994).
assessment that models this phase

RED_P (P–Sb)

Id: phase:p-sb:p-red; status needs_review
No structure assigned. Why: name_has_descriptive_tokens:RED; no_structure_token
Candidate (sgte_mmc2): (Red P) — Hallstedt 2025 mmc2 row for RED_P: Red P
Stoichiometry: P 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–919.47 K, x(P) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:p-sb:p-red
tdb: tdb:SbP-94Ans-LB.tdb:RED_P

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

SbP-94Ans-LB.tdb: RED_P, type code %, sha256 d2d3f96ce75bac94…

63: PHASE RED_P % 1 1 !
64: CONST RED_P : P : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(94)90027-2 I. Ansara, C. Chatillon, H.L. Lukas, T. Nishizawa, H. Ohtani, K. Ishida et al., A binary database for III–V compound semiconductor systems, Calphad 18, 177-222 (1994).
assessment that models this phase

WHITE_P (P–Sb)

Id: phase:p-sb:p-white; status needs_review
No structure assigned. Why: name_has_descriptive_tokens:WHITE; no_structure_token
Candidate (sgte_mmc2): (White P) — Hallstedt 2025 mmc2 row for WHITE_P: White P
Stoichiometry: P 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:p-sb:p-white
tdb: tdb:SbP-94Ans-LB.tdb:WHITE_P

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

SbP-94Ans-LB.tdb: WHITE_P, type code %, sha256 d2d3f96ce75bac94…

58: PHASE WHITE_P % 1 1 !
59: CONST WHITE_P : P : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(94)90027-2 I. Ansara, C. Chatillon, H.L. Lukas, T. Nishizawa, H. Ohtani, K. Ishida et al., A binary database for III–V compound semiconductor systems, Calphad 18, 177-222 (1994).
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}
}