Bi–Tb system

17 accepted literature values from 1 paper(s) (experimental 10, model 7); 1 calculated phase diagram(s). 3 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (9) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	10
model	7

Accepted values by property group
Property group	Values
invariant reaction	16
phase transition	1

Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
BiTb-11Wan.tdb	S.L. Wang, Z.B. Hu, F. Gao, C.P. Wang, X.J. Liu, J. Phase Equilib. Diffus., 32, 441-46(2011). doi:10.1007/s11669-011-9939-1	`86634d657f268f1a343c0567fd3c9d18486963caf6114ed72fd2cd32001ba661`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
BiTb-11Wan.tdb	1876.41	BITB_B1 (x(Tb) 0.5) + BI3TB4_D73 (x(Tb) 0.57143) + LIQUID (x(Tb) 0.62204)
BiTb-11Wan.tdb	1876.41	BITB_B1 (x(Tb) 0.5) + BI3TB4_D73 (x(Tb) 0.57143) + LIQUID (x(Tb) 0.62214)
BiTb-11Wan.tdb	1876.41	BITB_B1 (x(Tb) 0.5) + BI3TB4_D73 (x(Tb) 0.57143) + LIQUID (x(Tb) 0.6218)
BiTb-11Wan.tdb	1758.85	BI3TB4_D73 (x(Tb) 0.57143) + BI3TB5_D88 (x(Tb) 0.625) + LIQUID (x(Tb) 0.68982)
BiTb-11Wan.tdb	1758.84	BI3TB4_D73 (x(Tb) 0.57143) + BI3TB5_D88 (x(Tb) 0.625) + LIQUID (x(Tb) 0.69011)
BiTb-11Wan.tdb	1682.24	BI3TB4_D73 (x(Tb) 0.57143) + BI3TB5_D88 (x(Tb) 0.625) + BI3TB5_LT (x(Tb) 0.625)
BiTb-11Wan.tdb	1682.24	BI3TB5_LT (x(Tb) 0.625) + BI3TB5_D88 (x(Tb) 0.625) + LIQUID (x(Tb) 0.731)
BiTb-11Wan.tdb	1682.24	BI3TB5_D88 (x(Tb) 0.625) + BI3TB5_LT (x(Tb) 0.625) + LIQUID (x(Tb) 0.73113)
BiTb-11Wan.tdb	1539.58	LIQUID (x(Tb) 0.92434) + BCC_A2 (x(Tb) 0.99051) + HCP_A3 (x(Tb) 0.99488)
BiTb-11Wan.tdb	1377.78	BI3TB5_LT (x(Tb) 0.625) + LIQUID (x(Tb) 0.84782) + HCP_A3 (x(Tb) 0.99235)
BiTb-11Wan.tdb	1377.78	BI3TB5_LT (x(Tb) 0.625) + LIQUID (x(Tb) 0.84785) + HCP_A3 (x(Tb) 0.99235)
BiTb-11Wan.tdb	543.42	RHOMBOHEDRAL_A7 (x(Tb) 0) + LIQUID (x(Tb) 0.00544) + BITB_B1 (x(Tb) 0.5)
BiTb-11Wan.tdb	543.42	RHOMBOHEDRAL_A7 (x(Tb) 0) + LIQUID (x(Tb) 0.00542) + BITB_B1 (x(Tb) 0.5)
BiTb-11Wan.tdb	316.83	BI3TB4_D73 (x(Tb) 0.57143) + BI3TB5_LT (x(Tb) 0.625) + HCP_A3 (x(Tb) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Bi–Tb system (16)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
2033.15	congruent melting: L -> BiTb	L: Tb 0.5; BiTb: Tb 0.5	model	[1] Wang 2011	Table 2, p. 3, row 4 report
2033.15	congruent melting: L -> BiTb	L: Tb 0.5; BiTb: Tb 0.5	experimental	[1] Wang 2011 cites Abulkhaev 1997	Table 2, p. 3, row 3 report
1873.15	peritectic: L + BiTb -> Bi3Tb4	BiTb: Tb 0.5; Bi3Tb4: Tb 0.571	experimental	[1] Wang 2011 cites Abulkhaev 1997	Table 2, p. 3, row 5 report
1873.15	peritectic: L + BiTb -> Bi3Tb4	L: Tb 0.623; BiTb: Tb 0.5; Bi3Tb4: Tb 0.571	model	[1] Wang 2011	Table 2, p. 3, row 6 report
1763.15	peritectic: L + Bi3Tb4 -> βBi3Tb5	Bi3Tb4: Tb 0.5; βBi3Tb5: Tb 0.571	experimental	[1] Wang 2011 cites Abulkhaev 1997	Table 2, p. 3, row 7 report
1763.05	peritectic: L + Bi3Tb4 -> βBi3Tb5	L: Tb 0.687; Bi3Tb4: Tb 0.5; βBi3Tb5: Tb 0.571	model	[1] Wang 2011	Table 2, p. 3, row 8 report
1683.15	polymorphic: αBi3Tb5 -> βBi3Tb5	αBi3Tb5: Tb 0.625; βBi3Tb5: Bi 0.375, Tb 0.625	experimental	[1] Wang 2011 cites Abulkhaev 1997	Table 2, p. 3, row 9 report
1683.05	polymorphic: αBi3Tb5 -> βBi3Tb5	αBi3Tb5: Tb 0.625; βBi3Tb5: Bi 0.375, Tb 0.625	model	[1] Wang 2011	Table 2, p. 3, row 10 report
1539.55	metatectic/catatectic: βTb -> L + αTb	βTb: Tb 0.991; L: Tb 0.924; αTb: Tb 0.995	model	[1] Wang 2011	Table 2, p. 3, row 14 report
1538.15	metatectic/catatectic: βTb -> L + αTb		experimental	[1] Wang 2011 cites Abulkhaev 1997	Table 2, p. 3, row 13 report
1378.15	eutectic		experimental	[1] Wang 2011 cites Abulkhaev 1997	p. 1 report	Abulkhaev[14] also determined a metatectic reaction (bTb (99 at.% Tb) M L + aTb (>99 at.% Tb) at 1538 ± 10 C) and two eutectic reactions: L (0.2 at.% Tb) M (Bi) + BiTb at 269 ± 2 C and L (83 ± 1 at.% Tb) M aTb (>99 at.% Tb) + aBi3Tb5 at 1105 ± 10 C.
1378.15	eutectic: L -> αBi3Tb5 + αTb	L: Tb 0.83; αBi3Tb5: Tb 0.625	experimental	[1] Wang 2011 cites Abulkhaev 1997	Table 2, p. 3, row 11 report
1377.75	eutectic: L -> αBi3Tb5 + αTb	L: Tb 0.848; αBi3Tb5: Tb 0.625; αTb: Tb 0.992	model	[1] Wang 2011	Table 2, p. 3, row 12 report
543.45	eutectic: L -> (Bi) + BiTb	L: Tb 0.005; (Bi): Tb 0; BiTb: Tb 0.5	model	[1] Wang 2011	Table 2, p. 3, row 2 report
542.15	eutectic		experimental	[1] Wang 2011 cites Abulkhaev 1997	p. 1 report	Abulkhaev[14] also determined a metatectic reaction (bTb (99 at.% Tb) M L + aTb (>99 at.% Tb) at 1538 ± 10 C) and two eutectic reactions: L (0.2 at.% Tb) M (Bi) + BiTb at 269 ± 2 C and L (83 ± 1 at.% Tb) M aTb (>99 at.% Tb) + aBi3Tb5 at 1105 ± 10 C.
542.15	eutectic: L -> (Bi) + BiTb	L: Tb 0.002; (Bi): Tb 0; BiTb: Tb 0.5	experimental	[1] Wang 2011 cites Abulkhaev 1997	Table 2, p. 3, row 1 report

Other properties

Phase transition (1)

Phase transition, Bi–Tb system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1683.15 K	1683.15	polymorphic: aBi3Tb5 M bBi3Tb5	experimental	[1] Wang 2011 cites Abulkhaev 1997	p. 1 report	A reversible polymorphic transition (aBi3Tb5 M bBi3Tb5 at 1410 ± 10 C) was observed by Abulkhaev.[14]

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

S. L. Wang, Z. B. Hu, F. Gao, C. P. Wang, X. J. Liu, Thermodynamic Assessments of the Bi-Tb and Bi-Y Systems, J. Phase Equilib. Diffus. 32, 441-446 (2011). doi:10.1007/s11669-011-9939-1

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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). 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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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}
}