Ag–Lu phases

7 phases (tier A 6, liquid 1); 6 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–Lu system page · Markdown · field reference

Phases of the Ag–Lu system (7)
Phase	Structure	Basis	Stability (calculated)	TDB models
AG2LU_C11B phase:ag-lu:ag2lu-c11b	MoSi2 · C11_b · tI6 · I4/mmm (139)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1372.23 K, x(Lu) 0.33333–0.33333	1
AG4LU_D1A phase:ag-lu:ag4lu-d1a	MoNi4 · D1_a · tI10 · I4/m (87)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1195.01 K, x(Lu) 0.2–0.2	1
AGLU_B2 phase:ag-lu:aglu-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1396.82 K, x(Lu) 0.5–0.5	1
BCC_A2 phase:ag-lu:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	not stable in 1 calculated diagram(s)	1
FCC_A1 phase:ag-lu:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2500 K, x(Lu) 0–0.35158	1
HCP_A3 phase:ag-lu:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2016.99 K, x(Lu) 0.97813–1	1
LIQUID phase:ag-lu:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 1088.01–2500 K, x(Lu) 0–1	1

AG2LU_C11B (Ag–Lu)

Id: phase:ag-lu:ag2lu-c11b; status assigned
Structure: MoSi2 · C11_b · tI6 · I4/mmm (139); type st:c11-b-mosi2-ti6; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaacfycx and oqmd-27616, space group 139
Stoichiometry: Ag 0.6667, Lu 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1372.23 K, x(Lu) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ag-lu:ag2lu-c11b
mp: mp:mp-aaacfycx
oqmd: oqmd:oqmd-27616
tdb: tdb:AgLu-18Shi.tdb:AG2LU_C11B

TDB models of AG2LU_C11B (1): PHASE and CONSTITUENT statements as written

AgLu-18Shi.tdb: AG2LU_C11B, type code %, sha256 be02bf2c5df06dfd…

53: PHASE AG2LU_C11B % 2 2 1 !
54: CONST AG2LU_C11B : AG : LU : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2018.07.004 C. Shi, Y. Du, B. Hu, B. Yang, Y. Pan, F. Guo, S. Liu, Q. Du, Calphad, 62, 207-14(2018).
assessment that models this phase

AG4LU_D1A (Ag–Lu)

Id: phase:ag-lu:ag4lu-d1a; status assigned
Structure: MoNi4 · D1_a · tI10 · I4/m (87); type st:d1-a-moni4-ti10; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaabgjqv and oqmd-10654, space group 87
Stoichiometry: Ag 0.8000, Lu 0.2000
Stability: stable in 1 of 1 calculated diagram(s): 300–1195.01 K, x(Lu) 0.2–0.2
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:ag-lu:ag4lu-d1a
mp: mp:mp-aaabgjqv
oqmd: oqmd:oqmd-10654
tdb: tdb:AgLu-18Shi.tdb:AG4LU_D1A

TDB models of AG4LU_D1A (1): PHASE and CONSTITUENT statements as written

AgLu-18Shi.tdb: AG4LU_D1A, type code %, sha256 be02bf2c5df06dfd…

48: PHASE AG4LU_D1A % 2 4 1 !
49: CONST AG4LU_D1A : AG : LU : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2018.07.004 C. Shi, Y. Du, B. Hu, B. Yang, Y. Pan, F. Guo, S. Liu, Q. Du, Calphad, 62, 207-14(2018).
assessment that models this phase

AGLU_B2 (Ag–Lu)

Id: phase:ag-lu:aglu-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, Lu 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1396.82 K, x(Lu) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ag-lu:aglu-b2
tdb: tdb:AgLu-18Shi.tdb:AGLU_B2

TDB models of AGLU_B2 (1): PHASE and CONSTITUENT statements as written

AgLu-18Shi.tdb: AGLU_B2, type code %A, sha256 be02bf2c5df06dfd…

58: PHASE AGLU_B2 %A 2 1 1 !
59: CONST AGLU_B2 : AG : LU : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2018.07.004 C. Shi, Y. Du, B. Hu, B. Yang, Y. Pan, F. Guo, S. Liu, Q. Du, Calphad, 62, 207-14(2018).
assessment that models this phase

BCC_A2 (Ag–Lu)

Id: phase:ag-lu:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; 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-lu:bcc-a2
tdb: tdb:AgLu-18Shi.tdb:BCC_A2

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

AgLu-18Shi.tdb: BCC_A2, type code %B, sha256 be02bf2c5df06dfd…

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

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2018.07.004 C. Shi, Y. Du, B. Hu, B. Yang, Y. Pan, F. Guo, S. Liu, Q. Du, Calphad, 62, 207-14(2018).
assessment that models this phase

FCC_A1 (Ag–Lu)

Id: phase:ag-lu: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): 300–2500 K, x(Lu) 0–0.35158
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ag-lu:fcc-a1
tdb: tdb:AgLu-18Shi.tdb:FCC_A1

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

AgLu-18Shi.tdb: FCC_A1, type code %A, sha256 be02bf2c5df06dfd…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : AG% LU : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2018.07.004 C. Shi, Y. Du, B. Hu, B. Yang, Y. Pan, F. Guo, S. Liu, Q. Du, Calphad, 62, 207-14(2018).
assessment that models this phase

HCP_A3 (Ag–Lu)

Id: phase:ag-lu: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: stable in 1 of 1 calculated diagram(s): 300–2016.99 K, x(Lu) 0.97813–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ag-lu:hcp-a3
tdb: tdb:AgLu-18Shi.tdb:HCP_A3

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

AgLu-18Shi.tdb: HCP_A3, type code %A, sha256 be02bf2c5df06dfd…

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

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2018.07.004 C. Shi, Y. Du, B. Hu, B. Yang, Y. Pan, F. Guo, S. Liu, Q. Du, Calphad, 62, 207-14(2018).
assessment that models this phase

LIQUID (Ag–Lu)

Id: phase:ag-lu:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1088.01–2500 K, x(Lu) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:ag-lu:liquid
tdb: tdb:AgLu-18Shi.tdb:LIQUID

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

AgLu-18Shi.tdb: LIQUID, type code %, sha256 be02bf2c5df06dfd…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : AG LU : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2018.07.004 C. Shi, Y. Du, B. Hu, B. Yang, Y. Pan, F. Guo, S. Liu, Q. Du, Calphad, 62, 207-14(2018).
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}
}