Ag–Sr phases

9 phases (tier A 4, tier B 1, 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–Sr system page · Markdown · field reference

Phases of the Ag–Sr system (9)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
AG2SR phase:ag-sr:ag2sr	Hg2K · oI12 · Imma (74)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1033.38 K, x(Sr) 0.33333–0.33333	6	1
AG2SR3 phase:ag-sr:ag2sr3	Er3Ni2 · hR15 · R-3 (148)	tier B: DFT-supported (unique MP + OQMD match)	stable in 1 of 1 calculated diagram(s): 300–938.23 K, x(Sr) 0.6–0.6	0	1
AG4SR phase:ag-sr:ag4sr		needs_review	stable in 1 of 1 calculated diagram(s): 300–985.57 K, x(Sr) 0.2–0.2	4	1
AG5SR_D2D phase:ag-sr:ag5sr-d2d	CaCu5 · D2_d · hP6 · P6/mmm (191)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1056.08 K, x(Sr) 0.16667–0.16667	6	1
AGSR phase:ag-sr:agsr	AgSr · oP16 · Pnma (62)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–945.96 K, x(Sr) 0.5–0.5	2	1
BCC_A2 phase:ag-sr:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 820–1050 K, x(Sr) 0.99908–1	0	1
FCC_A1 phase:ag-sr:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1268.58 K, x(Sr) 0–1	2	1
HCP_A3 phase:ag-sr: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-sr:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 709.45–2500 K, x(Sr) 0–1	12	1

AG2SR (Ag–Sr)

Id: phase:ag-sr:ag2sr; 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 (no_on_hull_entry_in_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ag 0.6667, Sr 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1033.38 K, x(Sr) 0.33333–0.33333
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-sr:ag2sr
paper: paper:10.1016/j.jallcom.2005.06.019:Ag2Sr
tdb: tdb:AgSr-06Liu.tdb:AG2SR

TDB models of AG2SR (1): PHASE and CONSTITUENT statements as written

AgSr-06Liu.tdb: AG2SR, type code %, sha256 88cea835a729b38b…

55: PHASE AG2SR % 2 2 1 !
56: CONST AG2SR : AG : SR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/s0364-5916(01)00041-4 G.B. Olson, Calphad 25 (2) (2001) 175–190.
cited as the source of values for this phase
doi:10.1111/j.1151-2916.1999.tb02283.x Jérôme Assal, Bengt Hallstedt, Ludwig J. Gauckler, Experimental Phase‐Diagram Study and Thermodynamic Optimization of the Silver‐Strontium‐Copper‐Oxygen (Ag‐Sr‐Cu‐O) and Silver‐Calcium‐Copper‐Oxygen (Ag‐Ca‐Cu‐O) Systems, Journal of the American Ceramic Society 82, 3591-3596 (1999).
cited as the source of values for this phase

AG2SR3 (Ag–Sr)

Id: phase:ag-sr:ag2sr3; status assigned
Structure: Er3Ni2 · hR15 · R-3 (148); type st:er3ni2-hr15; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Ag 0.4000, Sr 0.6000
Stability: stable in 1 of 1 calculated diagram(s): 300–938.23 K, x(Sr) 0.6–0.6
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ag-sr:ag2sr3
mp: mp:mp-aaaabsxp
oqmd: oqmd:oqmd-10670
tdb: tdb:AgSr-06Liu.tdb:AG2SR3

TDB models of AG2SR3 (1): PHASE and CONSTITUENT statements as written

AgSr-06Liu.tdb: AG2SR3, type code %, sha256 88cea835a729b38b…

65: PHASE AG2SR3 % 2 2 3 !
66: CONST AG2SR3 : AG : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase

AG4SR (Ag–Sr)

Id: phase:ag-sr:ag4sr; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Ag4Sr) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Ag4Sr) — Hallstedt 2025 mmc2 row for AG4SR: Ag4Sr
Stoichiometry: Ag 0.8000, Sr 0.2000
Stability: stable in 1 of 1 calculated diagram(s): 300–985.57 K, x(Sr) 0.2–0.2
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-sr:ag4sr
paper: paper:10.1016/j.jallcom.2005.06.019:Ag4Sr
tdb: tdb:AgSr-06Liu.tdb:AG4SR

TDB models of AG4SR (1): PHASE and CONSTITUENT statements as written

AgSr-06Liu.tdb: AG4SR, type code %, sha256 88cea835a729b38b…

50: PHASE AG4SR % 2 4 1 !
51: CONST AG4SR : AG : SR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/s0364-5916(01)00041-4 G.B. Olson, Calphad 25 (2) (2001) 175–190.
cited as the source of values for this phase
doi:10.1111/j.1151-2916.1999.tb02283.x Jérôme Assal, Bengt Hallstedt, Ludwig J. Gauckler, Experimental Phase‐Diagram Study and Thermodynamic Optimization of the Silver‐Strontium‐Copper‐Oxygen (Ag‐Sr‐Cu‐O) and Silver‐Calcium‐Copper‐Oxygen (Ag‐Ca‐Cu‐O) Systems, Journal of the American Ceramic Society 82, 3591-3596 (1999).
cited as the source of values for this phase

AG5SR_D2D (Ag–Sr)

Id: phase:ag-sr:ag5sr-d2d; status assigned
Structure: CaCu5 · D2_d · hP6 · P6/mmm (191); type st:d2-d-cacu5-hp6; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaados and oqmd-10671, space group 191
Stoichiometry: Ag 0.8333, Sr 0.1667
Stability: stable in 1 of 1 calculated diagram(s): 300–1056.08 K, x(Sr) 0.16667–0.16667
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:ag-sr:ag5sr-d2d
mp: mp:mp-aaaaados
oqmd: oqmd:oqmd-10671
paper: paper:10.1016/j.jallcom.2005.06.019:Ag5Sr
tdb: tdb:AgSr-06Liu.tdb:AG5SR_D2D

TDB models of AG5SR_D2D (1): PHASE and CONSTITUENT statements as written

AgSr-06Liu.tdb: AG5SR_D2D, type code %, sha256 88cea835a729b38b…

45: PHASE AG5SR_D2D % 2 5 1 !
46: CONST AG5SR_D2D : AG : SR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/s0364-5916(01)00041-4 G.B. Olson, Calphad 25 (2) (2001) 175–190.
cited as the source of values for this phase
doi:10.1111/j.1151-2916.1999.tb02283.x Jérôme Assal, Bengt Hallstedt, Ludwig J. Gauckler, Experimental Phase‐Diagram Study and Thermodynamic Optimization of the Silver‐Strontium‐Copper‐Oxygen (Ag‐Sr‐Cu‐O) and Silver‐Calcium‐Copper‐Oxygen (Ag‐Ca‐Cu‐O) Systems, Journal of the American Ceramic Society 82, 3591-3596 (1999).
cited as the source of values for this phase

AGSR (Ag–Sr)

Id: phase:ag-sr:agsr; status assigned
Structure: AgSr · oP16 · Pnma (62); type st:agsr-op16; 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_62_matches_0_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Ag 0.5000, Sr 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–945.96 K, x(Sr) 0.5–0.5
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-sr:agsr
paper: paper:10.1016/j.jallcom.2005.06.019:AgSr
tdb: tdb:AgSr-06Liu.tdb:AGSR

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

AgSr-06Liu.tdb: AGSR, type code %, sha256 88cea835a729b38b…

60: PHASE AGSR % 2 1 1 !
61: CONST AGSR : AG : SR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/s0364-5916(01)00041-4 G.B. Olson, Calphad 25 (2) (2001) 175–190.
cited as the source of values for this phase
doi:10.1111/j.1151-2916.1999.tb02283.x Jérôme Assal, Bengt Hallstedt, Ludwig J. Gauckler, Experimental Phase‐Diagram Study and Thermodynamic Optimization of the Silver‐Strontium‐Copper‐Oxygen (Ag‐Sr‐Cu‐O) and Silver‐Calcium‐Copper‐Oxygen (Ag‐Ca‐Cu‐O) Systems, Journal of the American Ceramic Society 82, 3591-3596 (1999).
cited as the source of values for this phase

BCC_A2 (Ag–Sr)

Id: phase:ag-sr: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): 820–1050 K, x(Sr) 0.99908–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ag-sr:bcc-a2
tdb: tdb:AgSr-06Liu.tdb:BCC_A2

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

AgSr-06Liu.tdb: BCC_A2, type code %B, sha256 88cea835a729b38b…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : AG SR% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase

FCC_A1 (Ag–Sr)

Id: phase:ag-sr: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): 300–1268.58 K, x(Sr) 0–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-sr:fcc-a1
paper: paper:10.1016/j.jallcom.2005.06.019:fccAg
tdb: tdb:AgSr-06Liu.tdb:FCC_A1

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

AgSr-06Liu.tdb: FCC_A1, type code %A, sha256 88cea835a729b38b…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : AG% SR% : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/s0364-5916(01)00041-4 G.B. Olson, Calphad 25 (2) (2001) 175–190.
cited as the source of values for this phase
doi:10.1111/j.1151-2916.1999.tb02283.x Jérôme Assal, Bengt Hallstedt, Ludwig J. Gauckler, Experimental Phase‐Diagram Study and Thermodynamic Optimization of the Silver‐Strontium‐Copper‐Oxygen (Ag‐Sr‐Cu‐O) and Silver‐Calcium‐Copper‐Oxygen (Ag‐Ca‐Cu‐O) Systems, Journal of the American Ceramic Society 82, 3591-3596 (1999).
cited as the source of values for this phase

HCP_A3 (Ag–Sr)

Id: phase:ag-sr: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: 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-sr:hcp-a3
tdb: tdb:AgSr-06Liu.tdb:HCP_A3

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

AgSr-06Liu.tdb: HCP_A3, type code %A, sha256 88cea835a729b38b…

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

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase

LIQUID (Ag–Sr)

Id: phase:ag-sr:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 709.45–2500 K, x(Sr) 0–1
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:ag-sr:liquid
paper: paper:10.1016/j.jallcom.2005.06.019:L
tdb: tdb:AgSr-06Liu.tdb:LIQUID

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

AgSr-06Liu.tdb: LIQUID, type code %, sha256 88cea835a729b38b…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : AG SR : !

Example references (3 of 3; assessments first):

doi:10.1016/j.jallcom.2005.06.019 Yajun Liu, Dong Liang, Thermodynamic modeling of the Ag–Sr system, Journal of Alloys and Compounds 407, 74-77 (2006).
assessment that models this phase; reports values for this phase
doi:10.1016/s0364-5916(01)00041-4 G.B. Olson, Calphad 25 (2) (2001) 175–190.
cited as the source of values for this phase
doi:10.1111/j.1151-2916.1999.tb02283.x Jérôme Assal, Bengt Hallstedt, Ludwig J. Gauckler, Experimental Phase‐Diagram Study and Thermodynamic Optimization of the Silver‐Strontium‐Copper‐Oxygen (Ag‐Sr‐Cu‐O) and Silver‐Calcium‐Copper‐Oxygen (Ag‐Ca‐Cu‐O) Systems, Journal of the American Ceramic Society 82, 3591-3596 (1999).
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}
}