Bi–Yb phases

10 phases (tier A 6, tier C 3, liquid 1); 9 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 · Bi–Yb system page · Markdown · field reference

Phases of the Bi–Yb system (10)
Phase	Structure	Basis	Stability (calculated)	TDB models
RHOMBOHEDRAL_A7 phase:bi-yb:a7-rhombohedral	alpha-As · A7 · hR2 · R-3m (166)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–544.55 K, x(Yb) 0–0	2
BCC_A2 phase:bi-yb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 1033–1101.46 K, x(Yb) 1–1	2
BI10YB11 phase:bi-yb:bi10yb11	Ge10Ho11 · tI84 · I4/mmm (139)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1173.69 K, x(Yb) 0.52381–0.52381	2
BI2YB_C49 phase:bi-yb:bi2yb-c49	ZrSi2 · C49 · oC12 · Cmcm (63)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–923.21 K, x(Yb) 0.33333–0.33333	2
BI3YB4_D73 phase:bi-yb:bi3yb4-d73	Th3P4 · D7_3 · cI28 · I-43d (220)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1753.69 K, x(Yb) 0.57143–0.57143	2
BI3YB5 phase:bi-yb:bi3yb5	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1673.27 K, x(Yb) 0.625–0.625	2
BIYB2 phase:bi-yb:biyb2	La2Sb · tI12 · I4/mmm (139)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1371.74 K, x(Yb) 0.66667–0.66667	2
FCC_A1 phase:bi-yb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1033 K, x(Yb) 1–1	2
HCP_A3 phase:bi-yb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 2 calculated diagram(s)	2
LIQUID phase:bi-yb:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 522.95–2500 K, x(Yb) 0–1	2

RHOMBOHEDRAL_A7 (Bi–Yb)

Id: phase:bi-yb: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
Stoichiometry: Bi 1.0000
Stability: stable in 2 of 2 calculated diagram(s): 300–544.55 K, x(Yb) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:a7-rhombohedral
tdb: tdb:BiYb-15Wan-ass.tdb:RHOMBOHEDRAL_A7, tdb:BiYb-15Wan.tdb:RHOMBOHEDRAL_A7

TDB models of RHOMBOHEDRAL_A7 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: RHOMBOHEDRAL_A7, type code %, sha256 9fc0594db1361f49…

45: PHASE RHOMBOHEDRAL_A7 % 1 1 !
46: CONST RHOMBOHEDRAL_A7 : BI : !

BiYb-15Wan.tdb: RHOMBOHEDRAL_A7, type code %, sha256 ed5077d1b21a110f…

41: PHASE RHOMBOHEDRAL_A7 % 1 1 !
42: CONST RHOMBOHEDRAL_A7 : BI : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

BCC_A2 (Bi–Yb)

Id: phase:bi-yb: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 2 of 2 calculated diagram(s): 1033–1101.46 K, x(Yb) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:bcc-a2
tdb: tdb:BiYb-15Wan-ass.tdb:BCC_A2, tdb:BiYb-15Wan.tdb:BCC_A2

TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: BCC_A2, type code %B, sha256 9fc0594db1361f49…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : BI YB% : VA : !

BiYb-15Wan.tdb: BCC_A2, type code %B, sha256 ed5077d1b21a110f…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : BI YB% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

BI10YB11 (Bi–Yb)

Id: phase:bi-yb:bi10yb11; status assigned
Structure: Ge10Ho11 · tI84 · I4/mmm (139); type st:ge10ho11-ti84; 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: Bi 0.4762, Yb 0.5238
Stability: stable in 2 of 2 calculated diagram(s): 300–1173.69 K, x(Yb) 0.52381–0.52381
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:bi10yb11
tdb: tdb:BiYb-15Wan-ass.tdb:BI10YB11, tdb:BiYb-15Wan.tdb:BI10YB11

TDB models of BI10YB11 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: BI10YB11, type code %, sha256 9fc0594db1361f49…

55: PHASE BI10YB11 % 2 10 11 !
56: CONST BI10YB11 : BI : YB : !

BiYb-15Wan.tdb: BI10YB11, type code %, sha256 ed5077d1b21a110f…

51: PHASE BI10YB11 % 2 10 11 !
52: CONST BI10YB11 : BI : YB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

BI2YB_C49 (Bi–Yb)

Id: phase:bi-yb:bi2yb-c49; status assigned
Structure: ZrSi2 · C49 · oC12 · Cmcm (63); type st:c49-zrsi2-oc12; tier A: standard phase name; confidence high
Stoichiometry: Bi 0.6667, Yb 0.3333
Stability: stable in 2 of 2 calculated diagram(s): 300–923.21 K, x(Yb) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:bi2yb-c49
tdb: tdb:BiYb-15Wan-ass.tdb:BI2YB_C49, tdb:BiYb-15Wan.tdb:BI2YB_C49

TDB models of BI2YB_C49 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: BI2YB_C49, type code %, sha256 9fc0594db1361f49…

50: PHASE BI2YB_C49 % 2 2 1 !
51: CONST BI2YB_C49 : BI : YB : !

BiYb-15Wan.tdb: BI2YB_C49, type code %, sha256 ed5077d1b21a110f…

46: PHASE BI2YB_C49 % 2 2 1 !
47: CONST BI2YB_C49 : BI : YB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

BI3YB4_D73 (Bi–Yb)

Id: phase:bi-yb:bi3yb4-d73; status assigned
Structure: Th3P4 · D7_3 · cI28 · I-43d (220); type st:d7-3-th3p4-ci28; tier A: standard phase name; confidence high
Stoichiometry: Bi 0.4286, Yb 0.5714
Stability: stable in 2 of 2 calculated diagram(s): 300–1753.69 K, x(Yb) 0.57143–0.57143
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:bi3yb4-d73
tdb: tdb:BiYb-15Wan-ass.tdb:BI3YB4_D73, tdb:BiYb-15Wan.tdb:BI3YB4_D73

TDB models of BI3YB4_D73 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: BI3YB4_D73, type code %, sha256 9fc0594db1361f49…

60: PHASE BI3YB4_D73 % 2 3 4 !
61: CONST BI3YB4_D73 : BI : YB : !

BiYb-15Wan.tdb: BI3YB4_D73, type code %, sha256 ed5077d1b21a110f…

56: PHASE BI3YB4_D73 % 2 3 4 !
57: CONST BI3YB4_D73 : BI : YB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

BI3YB5 (Bi–Yb)

Id: phase:bi-yb:bi3yb5; status assigned
Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type st:d8-8-mn5si3-hp16; 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: Bi 0.3750, Yb 0.6250
Stability: stable in 2 of 2 calculated diagram(s): 300–1673.27 K, x(Yb) 0.625–0.625
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:bi3yb5
tdb: tdb:BiYb-15Wan-ass.tdb:BI3YB5, tdb:BiYb-15Wan.tdb:BI3YB5

TDB models of BI3YB5 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: BI3YB5, type code %, sha256 9fc0594db1361f49…

65: PHASE BI3YB5 % 2 3 5 !
66: CONST BI3YB5 : BI : YB : !

BiYb-15Wan.tdb: BI3YB5, type code %, sha256 ed5077d1b21a110f…

61: PHASE BI3YB5 % 2 3 5 !
62: CONST BI3YB5 : BI : YB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

BIYB2 (Bi–Yb)

Id: phase:bi-yb:biyb2; status assigned
Structure: La2Sb · tI12 · I4/mmm (139); type st:la2sb-ti12; 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: Bi 0.3333, Yb 0.6667
Stability: stable in 2 of 2 calculated diagram(s): 300–1371.74 K, x(Yb) 0.66667–0.66667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:biyb2
tdb: tdb:BiYb-15Wan-ass.tdb:BIYB2, tdb:BiYb-15Wan.tdb:BIYB2

TDB models of BIYB2 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: BIYB2, type code %, sha256 9fc0594db1361f49…

70: PHASE BIYB2 % 2 1 2 !
71: CONST BIYB2 : BI : YB : !

BiYb-15Wan.tdb: BIYB2, type code %, sha256 ed5077d1b21a110f…

66: PHASE BIYB2 % 2 1 2 !
67: CONST BIYB2 : BI : YB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

FCC_A1 (Bi–Yb)

Id: phase:bi-yb: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 2 of 2 calculated diagram(s): 300–1033 K, x(Yb) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:fcc-a1
tdb: tdb:BiYb-15Wan-ass.tdb:FCC_A1, tdb:BiYb-15Wan.tdb:FCC_A1

TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: FCC_A1, type code %A, sha256 9fc0594db1361f49…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : BI YB% : VA : !

BiYb-15Wan.tdb: FCC_A1, type code %A, sha256 ed5077d1b21a110f…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : BI YB% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

HCP_A3 (Bi–Yb)

Id: phase:bi-yb: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 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:hcp-a3
tdb: tdb:BiYb-15Wan-ass.tdb:HCP_A3, tdb:BiYb-15Wan.tdb:HCP_A3

TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: HCP_A3, type code %A, sha256 9fc0594db1361f49…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : BI YB : VA: !

BiYb-15Wan.tdb: HCP_A3, type code %A, sha256 ed5077d1b21a110f…

36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : BI YB : VA: !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
assessment that models this phase

LIQUID (Bi–Yb)

Id: phase:bi-yb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 522.95–2500 K, x(Yb) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:bi-yb:liquid
tdb: tdb:BiYb-15Wan-ass.tdb:LIQUID, tdb:BiYb-15Wan.tdb:LIQUID

TDB models of LIQUID (2): PHASE and CONSTITUENT statements as written

BiYb-15Wan-ass.tdb: LIQUID, type code %, sha256 9fc0594db1361f49…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : BI BI3YB4 YB : !

BiYb-15Wan.tdb: LIQUID, type code %, sha256 ed5077d1b21a110f…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : BI YB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2015.10.007 J. Wang, Y. Yuan, C. Li, C. Guo, Z. Du, B. Wu, Calphad, 51, 306-13(2015).
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}
}