Pb–Yb phases

9 phases (tier A 8, liquid 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 · Pb–Yb system page · Markdown · field reference

Phases of the Pb–Yb system (9)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:pb-yb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1032.01–1104.26 K, x(Yb) 0.99576–1	0	1
FCC_A1 phase:pb-yb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1057.61 K, x(Yb) 0–1	6	1
HCP_A3 phase:pb-yb: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:pb-yb:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 600.62–2500 K, x(Yb) 0–1	18	1
PB3YB_L12 phase:pb-yb:pb3yb-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1014.36 K, x(Yb) 0.25–0.25	11	1
PB3YB5_D88 phase:pb-yb:pb3yb5-d88	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1425.18 K, x(Yb) 0.625–0.625	8	1
PBYB_A2 phase:pb-yb:pbyb-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 770.08–1390.57 K, x(Yb) 0.5–0.50996	12	1
PBYB_L10 phase:pb-yb:pbyb-l10	AuCu · L1_0 · tP4 · P4/mmm (123)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–773.7 K, x(Yb) 0.5–0.50004	3	1
PBYB2_C37 phase:pb-yb:pbyb2-c37	Co2Si · C37 · oP12 · Pnma (62)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1515.8 K, x(Yb) 0.66667–0.66667	10	1

BCC_A2 (Pb–Yb)

Id: phase:pb-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 1 of 1 calculated diagram(s): 1032.01–1104.26 K, x(Yb) 0.99576–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:pb-yb:bcc-a2
tdb: tdb:PbYb-09Idb.tdb:BCC_A2

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

PbYb-09Idb.tdb: BCC_A2, type code %B, sha256 3e8d2d8ee78b7ae3…

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

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase

FCC_A1 (Pb–Yb)

Id: phase:pb-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 1 of 1 calculated diagram(s): 300–1057.61 K, x(Yb) 0–1
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:pb-yb:fcc-a1
paper: paper:10.1016/j.calphad.2009.05.001:(Pb), paper:10.1016/j.calphad.2009.05.001:(βYb)
tdb: tdb:PbYb-09Idb.tdb:FCC_A1

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

PbYb-09Idb.tdb: FCC_A1, type code %A, sha256 3e8d2d8ee78b7ae3…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : PB% YB% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase; reports values for this phase

HCP_A3 (Pb–Yb)

Id: phase:pb-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 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:pb-yb:hcp-a3
tdb: tdb:PbYb-09Idb.tdb:HCP_A3

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

PbYb-09Idb.tdb: HCP_A3, type code %A, sha256 3e8d2d8ee78b7ae3…

43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : PB YB : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase

LIQUID (Pb–Yb)

Id: phase:pb-yb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 600.62–2500 K, x(Yb) 0–1
Literature: 18 values (18 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pb-yb:liquid
paper: paper:10.1016/j.calphad.2009.05.001:Liq
tdb: tdb:PbYb-09Idb.tdb:LIQUID

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

PbYb-09Idb.tdb: LIQUID, type code %, sha256 3e8d2d8ee78b7ae3…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : PB PBYB2 YB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase; reports values for this phase

PB3YB_L12 (Pb–Yb)

Id: phase:pb-yb:pb3yb-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Stoichiometry: Pb 0.7500, Yb 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 300–1014.36 K, x(Yb) 0.25–0.25
Literature: 11 values (11 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pb-yb:pb3yb-l12
paper: paper:10.1016/j.calphad.2009.05.001:Pb3Yb
tdb: tdb:PbYb-09Idb.tdb:PB3YB_L12

TDB models of PB3YB_L12 (1): PHASE and CONSTITUENT statements as written

PbYb-09Idb.tdb: PB3YB_L12, type code %, sha256 3e8d2d8ee78b7ae3…

48: PHASE PB3YB_L12 % 2 3 1 !
49: CONST PB3YB_L12 : PB : YB : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase; reports values for this phase
doi:10.1016/0966-9795(94)p3682-e F. Sommer, B. Predel, G. Borzone, N. Parodi, R. Ferro, Calorimetric determination of the enthalpies of formation of liquid and solid YbPb alloys, Intermetallics 3, 15-22 (1995).
cited as the source of values for this phase
doi:10.1016/0040-6031(73)85076-2 A. Palenzona, S. Cirafici, Dynamic differential calorimetry of intermetallic compounds, Thermochimica Acta 6, 455-460 (1973).
cited as the source of values for this phase
doi:10.1021/j100216a030 R. A. Schiffman, Thermodynamics of the ytterbium-lead system by simultaneous weight-loss-mass-spectrometry Knudsen effusion, J. Phys. Chem. 86, 3855-3861 (1982).
cited as the source of values for this phase

PB3YB5_D88 (Pb–Yb)

Id: phase:pb-yb:pb3yb5-d88; status assigned
Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type st:d8-8-mn5si3-hp16; tier A: standard phase name; confidence high
Stoichiometry: Pb 0.3750, Yb 0.6250
Stability: stable in 1 of 1 calculated diagram(s): 300–1425.18 K, x(Yb) 0.625–0.625
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pb-yb:pb3yb5-d88
paper: paper:10.1016/j.calphad.2009.05.001:Pb3Yb5
tdb: tdb:PbYb-09Idb.tdb:PB3YB5_D88

TDB models of PB3YB5_D88 (1): PHASE and CONSTITUENT statements as written

PbYb-09Idb.tdb: PB3YB5_D88, type code %, sha256 3e8d2d8ee78b7ae3…

63: PHASE PB3YB5_D88 % 2 3 5 !
64: CONST PB3YB5_D88 : PB : YB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase; reports values for this phase
doi:10.1016/0966-9795(94)p3682-e F. Sommer, B. Predel, G. Borzone, N. Parodi, R. Ferro, Calorimetric determination of the enthalpies of formation of liquid and solid YbPb alloys, Intermetallics 3, 15-22 (1995).
cited as the source of values for this phase
doi:10.1021/j100216a030 R. A. Schiffman, Thermodynamics of the ytterbium-lead system by simultaneous weight-loss-mass-spectrometry Knudsen effusion, J. Phys. Chem. 86, 3855-3861 (1982).
cited as the source of values for this phase

PBYB_A2 (Pb–Yb)

Id: phase:pb-yb:pbyb-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): 770.08–1390.57 K, x(Yb) 0.5–0.50996
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pb-yb:pbyb-a2
paper: paper:10.1016/j.calphad.2009.05.001:βPbYb
tdb: tdb:PbYb-09Idb.tdb:PBYB_A2

TDB models of PBYB_A2 (1): PHASE and CONSTITUENT statements as written

PbYb-09Idb.tdb: PBYB_A2, type code %, sha256 3e8d2d8ee78b7ae3…

58: PHASE PBYB_A2 % 2 1 1 !
59: CONST PBYB_A2 : PB% YB : YB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase; reports values for this phase
doi:10.1016/0966-9795(94)p3682-e F. Sommer, B. Predel, G. Borzone, N. Parodi, R. Ferro, Calorimetric determination of the enthalpies of formation of liquid and solid YbPb alloys, Intermetallics 3, 15-22 (1995).
cited as the source of values for this phase
doi:10.1021/j100216a030 R. A. Schiffman, Thermodynamics of the ytterbium-lead system by simultaneous weight-loss-mass-spectrometry Knudsen effusion, J. Phys. Chem. 86, 3855-3861 (1982).
cited as the source of values for this phase

PBYB_L10 (Pb–Yb)

Id: phase:pb-yb:pbyb-l10; status assigned
Structure: AuCu · L1_0 · tP4 · P4/mmm (123); type st:l1-0-aucu-tp4; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–773.7 K, x(Yb) 0.5–0.50004
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pb-yb:pbyb-l10
paper: paper:10.1016/j.calphad.2009.05.001:αPbYb
tdb: tdb:PbYb-09Idb.tdb:PBYB_L10

TDB models of PBYB_L10 (1): PHASE and CONSTITUENT statements as written

PbYb-09Idb.tdb: PBYB_L10, type code %, sha256 3e8d2d8ee78b7ae3…

53: PHASE PBYB_L10 % 2 1 1 !
54: CONST PBYB_L10 : PB% YB : YB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase; reports values for this phase

PBYB2_C37 (Pb–Yb)

Id: phase:pb-yb:pbyb2-c37; status assigned
Structure: Co2Si · C37 · oP12 · Pnma (62); type st:c37-co2si-op12; tier A: standard phase name; confidence high
Stoichiometry: Pb 0.3333, Yb 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–1515.8 K, x(Yb) 0.66667–0.66667
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pb-yb:pbyb2-c37
paper: paper:10.1016/j.calphad.2009.05.001:PbYb2
tdb: tdb:PbYb-09Idb.tdb:PBYB2_C37

TDB models of PBYB2_C37 (1): PHASE and CONSTITUENT statements as written

PbYb-09Idb.tdb: PBYB2_C37, type code %, sha256 3e8d2d8ee78b7ae3…

68: PHASE PBYB2_C37 % 2 1 2 !
69: CONST PBYB2_C37 : PB : YB : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2009.05.001 M. Idbenali, C. Servant, N. Selhaoui, L. Bouirden, Thermodynamic description of the Pb–Yb binary system, Calphad 33, 570-575 (2009).
assessment that models this phase; reports values for this phase
doi:10.1016/0966-9795(94)p3682-e F. Sommer, B. Predel, G. Borzone, N. Parodi, R. Ferro, Calorimetric determination of the enthalpies of formation of liquid and solid YbPb alloys, Intermetallics 3, 15-22 (1995).
cited as the source of values for this phase
doi:10.1021/j100216a030 R. A. Schiffman, Thermodynamics of the ytterbium-lead system by simultaneous weight-loss-mass-spectrometry Knudsen effusion, J. Phys. Chem. 86, 3855-3861 (1982).
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}
}