Ag–Pr phases

9 phases (tier A 5, tier C 2, liquid 1, needs_review 1); 8 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–Pr system page · Markdown · field reference

Phases of the Ag–Pr system (9)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
AG2PR phase:ag-pr:ag2pr	Hg2K · oI12 · Imma (74)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1110.06 K, x(Pr) 0.33333–0.33333	4	1
AG51PR14 phase:ag-pr:ag51pr14	Ag51Gd14 · hP68 · P6/m (175)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1300.06 K, x(Pr) 0.21538–0.21538	6	1
AG5PR phase:ag-pr:ag5pr		needs_review	stable in 1 of 1 calculated diagram(s): 300–1104.37 K, x(Pr) 0.16667–0.16667	4	1
AGPR_B2 phase:ag-pr:agpr-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1205.47 K, x(Pr) 0.5–0.5	6	1
BCC_A2 phase:ag-pr:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 904.94–1599 K, x(Pr) 0.94048–1	2	1
DHCP phase:ag-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) 0.99156–1	4	1
FCC_A1 phase:ag-pr:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1347.43 K, x(Pr) 0–0.00048	2	1
HCP_A3 phase:ag-pr: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-pr:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 848.98–2500 K, x(Pr) 0–1	16	1

AG2PR (Ag–Pr)

Id: phase:ag-pr:ag2pr; status assigned
Structure: Hg2K · oI12 · Imma (74); type st:hg2k-oi12; 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_74_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ag 0.6667, Pr 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1110.06 K, x(Pr) 0.33333–0.33333
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-pr:ag2pr
paper: paper:10.1016/s0925-8388(00)00812-4:Ag2Pr
tdb: tdb:AgPr-00Yin.tdb:AG2PR

TDB models of AG2PR (1): PHASE and CONSTITUENT statements as written

AgPr-00Yin.tdb: AG2PR, type code %, sha256 5e256b7f49515adb…

62: PHASE AG2PR % 2 2 1 !
63: CONST AG2PR : AG : PR : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(74)90142-8 S. Delfino, A. Borsese, R. Capelli, R. Ferro, Phase equilibria in the silver—praseodymium system, Journal of the Less Common Metals 35, 31-37 (1974).
cited as the source of values for this phase

AG51PR14 (Ag–Pr)

Id: phase:ag-pr:ag51pr14; status assigned
Structure: Ag51Gd14 · hP68 · P6/m (175); type st:ag51gd14-hp68; 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: Ag 0.7846, Pr 0.2154
Stability: stable in 1 of 1 calculated diagram(s): 300–1300.06 K, x(Pr) 0.21538–0.21538
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-pr:ag51pr14
paper: paper:10.1016/s0925-8388(00)00812-4:Ag51Pr14
tdb: tdb:AgPr-00Yin.tdb:AG51PR14

TDB models of AG51PR14 (1): PHASE and CONSTITUENT statements as written

AgPr-00Yin.tdb: AG51PR14, type code %, sha256 5e256b7f49515adb…

57: PHASE AG51PR14 % 2 51 14 !
58: CONST AG51PR14 : AG : PR : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(74)90142-8 S. Delfino, A. Borsese, R. Capelli, R. Ferro, Phase equilibria in the silver—praseodymium system, Journal of the Less Common Metals 35, 31-37 (1974).
cited as the source of values for this phase

AG5PR (Ag–Pr)

Id: phase:ag-pr:ag5pr; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Ag5Pr) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Ag5Pr) — Hallstedt 2025 mmc2 row for AG5PR: Ag5Pr
Stoichiometry: Ag 0.8333, Pr 0.1667
Stability: stable in 1 of 1 calculated diagram(s): 300–1104.37 K, x(Pr) 0.16667–0.16667
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-pr:ag5pr
paper: paper:10.1016/s0925-8388(00)00812-4:Ag5Pr
tdb: tdb:AgPr-00Yin.tdb:AG5PR

TDB models of AG5PR (1): PHASE and CONSTITUENT statements as written

AgPr-00Yin.tdb: AG5PR, type code %, sha256 5e256b7f49515adb…

52: PHASE AG5PR % 2 5 1 !
53: CONST AG5PR : AG : PR : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(74)90142-8 S. Delfino, A. Borsese, R. Capelli, R. Ferro, Phase equilibria in the silver—praseodymium system, Journal of the Less Common Metals 35, 31-37 (1974).
cited as the source of values for this phase

AGPR_B2 (Ag–Pr)

Id: phase:ag-pr:agpr-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Stoichiometry: Ag 0.5000, Pr 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1205.47 K, x(Pr) 0.5–0.5
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-pr:agpr-b2
paper: paper:10.1016/s0925-8388(00)00812-4:AgPr
tdb: tdb:AgPr-00Yin.tdb:AGPR_B2

TDB models of AGPR_B2 (1): PHASE and CONSTITUENT statements as written

AgPr-00Yin.tdb: AGPR_B2, type code %, sha256 5e256b7f49515adb…

67: PHASE AGPR_B2 % 2 1 1 !
68: CONST AGPR_B2 : AG : PR : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(74)90142-8 S. Delfino, A. Borsese, R. Capelli, R. Ferro, Phase equilibria in the silver—praseodymium system, Journal of the Less Common Metals 35, 31-37 (1974).
cited as the source of values for this phase

BCC_A2 (Ag–Pr)

Id: phase:ag-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): 904.94–1599 K, x(Pr) 0.94048–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-pr:bcc-a2
paper: paper:10.1016/s0925-8388(00)00812-4:β-Pr
tdb: tdb:AgPr-00Yin.tdb:BCC_A2

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

AgPr-00Yin.tdb: BCC_A2, type code %B, sha256 5e256b7f49515adb…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : AG PR% : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(74)90142-8 S. Delfino, A. Borsese, R. Capelli, R. Ferro, Phase equilibria in the silver—praseodymium system, Journal of the Less Common Metals 35, 31-37 (1974).
cited as the source of values for this phase

DHCP (Ag–Pr)

Id: phase:ag-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) 0.99156–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ag-pr:dhcp-a3, corpus:phase:ag-pr:dhcp
paper: paper:10.1016/s0925-8388(00)00812-4:α-Pr
tdb: tdb:AgPr-00Yin.tdb:DHCP

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

AgPr-00Yin.tdb: DHCP, type code %, sha256 5e256b7f49515adb…

47: PHASE DHCP % 1 1 !
48: CONST DHCP : AG PR% : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(74)90142-8 S. Delfino, A. Borsese, R. Capelli, R. Ferro, Phase equilibria in the silver—praseodymium system, Journal of the Less Common Metals 35, 31-37 (1974).
cited as the source of values for this phase

FCC_A1 (Ag–Pr)

Id: phase:ag-pr: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): 300–1347.43 K, x(Pr) 0–0.00048
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-pr:fcc-a1
paper: paper:10.1016/s0925-8388(00)00812-4:Ag
tdb: tdb:AgPr-00Yin.tdb:FCC_A1

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

AgPr-00Yin.tdb: FCC_A1, type code %A, sha256 5e256b7f49515adb…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : AG% PR : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(74)90142-8 S. Delfino, A. Borsese, R. Capelli, R. Ferro, Phase equilibria in the silver—praseodymium system, Journal of the Less Common Metals 35, 31-37 (1974).
cited as the source of values for this phase

HCP_A3 (Ag–Pr)

Id: phase:ag-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: 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-pr:hcp-a3
tdb: tdb:AgPr-00Yin.tdb:HCP_A3

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

AgPr-00Yin.tdb: HCP_A3, type code %A, sha256 5e256b7f49515adb…

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

Example references (1 of 1; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase

LIQUID (Ag–Pr)

Id: phase:ag-pr:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 848.98–2500 K, x(Pr) 0–1
Literature: 16 values (16 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-pr:liquid
paper: paper:10.1016/s0925-8388(00)00812-4:L
tdb: tdb:AgPr-00Yin.tdb:LIQUID

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

AgPr-00Yin.tdb: LIQUID, type code %, sha256 5e256b7f49515adb…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : AG PR : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(00)00812-4 F. Yin, X. Su, Z. Li, P. Zhang, M. Huang, Y. Shi, J. Alloys Compd., 307, 202-6(2000).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(74)90142-8 S. Delfino, A. Borsese, R. Capelli, R. Ferro, Phase equilibria in the silver—praseodymium system, Journal of the Less Common Metals 35, 31-37 (1974).
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}
}