Ag–P phases

8 phases (tier A 3, tier B 1, tier C 1, liquid 1, needs_review 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 · Ag–P system page · Markdown · field reference

Phases of the Ag–P system (8)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
AG3P11 phase:ag-p:ag3p11	Ag3P11 · mC28 · Cm (8)	tier B: DFT-supported (unique MP + OQMD match)	stable in 1 of 1 calculated diagram(s): 300–829.93 K, x(P) 0.78571–0.78571	7	1
AGP2 phase:ag-p:agp2	CuP2 · mP12 · P2_1/c (14)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–910.63 K, x(P) 0.66667–0.66667	6	1
BCC_A2 phase:ag-p:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
FCC_A1 phase:ag-p:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1244.02 K, x(P) 0–5e-05	2	1
HCP_A3 phase:ag-p:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
LIQUID phase:ag-p:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 826.49–2500 K, x(P) 0–1	3	1
RED_P phase:ag-p:p-red		needs_review	stable in 1 of 1 calculated diagram(s): 300–852.09 K, x(P) 1–1	0	1
WHITE_P phase:ag-p:p-white		needs_review	not stable in 1 calculated diagram(s)	0	1

AG3P11 (Ag–P)

Id: phase:ag-p:ag3p11; status assigned
Structure: Ag3P11 · mC28 · Cm (8); type st:ag3p11-mc28; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Ag 0.2143, P 0.7857
Stability: stable in 1 of 1 calculated diagram(s): 300–829.93 K, x(P) 0.78571–0.78571
Literature: 7 values (7 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ag-p:ag3p11
mp: mp:mp-aaaabpeb
oqmd: oqmd:oqmd-5040
paper: paper:10.1007/bf02881270:Ag3P11
tdb: tdb:AgP-88Kar.tdb:AG3P11

TDB models of AG3P11 (1): PHASE and CONSTITUENT statements as written

AgP-88Kar.tdb: AG3P11, type code %, sha256 c7e56e409a01660f…

61: PHASE AG3P11 % 2 3 11 !
62: CONST AG3P11 : AG : P : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02881270 I. Karakaya, W.T. Thompson, Bull. Alloy Phase Diag., 9, 232-36(1988).
assessment that models this phase; reports values for this phase

AGP2 (Ag–P)

Id: phase:ag-p:agp2; status assigned
Structure: CuP2 · mP12 · P2_1/c (14); type st:cup2-mp12; 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: Ag 0.3333, P 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–910.63 K, x(P) 0.66667–0.66667
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-p:agp2
paper: paper:10.1007/bf02881270:AgP2
tdb: tdb:AgP-88Kar.tdb:AGP2

TDB models of AGP2 (1): PHASE and CONSTITUENT statements as written

AgP-88Kar.tdb: AGP2, type code %, sha256 c7e56e409a01660f…

56: PHASE AGP2 % 2 1 2 !
57: CONST AGP2 : AG : P : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02881270 I. Karakaya, W.T. Thompson, Bull. Alloy Phase Diag., 9, 232-36(1988).
assessment that models this phase; reports values for this phase

BCC_A2 (Ag–P)

Id: phase:ag-p: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:ag-p:bcc-a2
tdb: tdb:AgP-88Kar.tdb:BCC_A2

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

AgP-88Kar.tdb: BCC_A2, type code %B, sha256 c7e56e409a01660f…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : AG P : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02881270 I. Karakaya, W.T. Thompson, Bull. Alloy Phase Diag., 9, 232-36(1988).
assessment that models this phase

FCC_A1 (Ag–P)

Id: phase:ag-p: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 1 of 1 calculated diagram(s): 300–1244.02 K, x(P) 0–5e-05
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-p:fcc-a1
paper: paper:10.1007/bf02881270:(Ag)
tdb: tdb:AgP-88Kar.tdb:FCC_A1

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

AgP-88Kar.tdb: FCC_A1, type code %A, sha256 c7e56e409a01660f…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : AG% P : VA : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02881270 I. Karakaya, W.T. Thompson, Bull. Alloy Phase Diag., 9, 232-36(1988).
assessment that models this phase; reports values for this phase

HCP_A3 (Ag–P)

Id: phase:ag-p: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: Ag 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:ag-p:hcp-a3
tdb: tdb:AgP-88Kar.tdb:HCP_A3

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

AgP-88Kar.tdb: HCP_A3, type code %A, sha256 c7e56e409a01660f…

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

Example references (1 of 1; assessments first):

doi:10.1007/BF02881270 I. Karakaya, W.T. Thompson, Bull. Alloy Phase Diag., 9, 232-36(1988).
assessment that models this phase

LIQUID (Ag–P)

Id: phase:ag-p:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 826.49–2500 K, x(P) 0–1
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ag-p:liquid
paper: paper:10.1007/bf02881270:L1, paper:10.1007/bf02881270:L2
tdb: tdb:AgP-88Kar.tdb:LIQUID

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

AgP-88Kar.tdb: LIQUID, type code %, sha256 c7e56e409a01660f…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : AG P : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02881270 I. Karakaya, W.T. Thompson, Bull. Alloy Phase Diag., 9, 232-36(1988).
assessment that models this phase; reports values for this phase

RED_P (Ag–P)

Id: phase:ag-p: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): 300–852.09 K, x(P) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-p:p-red, corpus:phase:ag-p:red-p
tdb: tdb:AgP-88Kar.tdb:RED_P

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

AgP-88Kar.tdb: RED_P, type code %, sha256 c7e56e409a01660f…

51: PHASE RED_P % 1 1 !
52: CONST RED_P : P : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02881270 I. Karakaya, W.T. Thompson, Bull. Alloy Phase Diag., 9, 232-36(1988).
assessment that models this phase

WHITE_P (Ag–P)

Id: phase:ag-p: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:ag-p:p-white
tdb: tdb:AgP-88Kar.tdb:WHITE_P

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

AgP-88Kar.tdb: WHITE_P, type code %, sha256 c7e56e409a01660f…

46: PHASE WHITE_P % 1 1 !
47: CONST WHITE_P : P : !

Example references (1 of 1; assessments first):

doi:10.1007/BF02881270 I. Karakaya, W.T. Thompson, Bull. Alloy Phase Diag., 9, 232-36(1988).
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}
}