Co–La system

26 accepted literature values from 1 paper(s) (experimental 17, model 9); 2 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (12) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	17
model	9

Accepted values by property group
Property group	Values
invariant reaction	26

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
CoLa-08Wan.tdb	C.P. Wang, J. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, K. Ishida, J. Alloys Compd., 453, 174-79(2008). doi:10.1016/j.jallcom.2006.11.155	`0b3d3f1eb4712d81e4d869b3934033dfca0265d0b1f1e759dbd424c427fe6bc3`	viewer · TDB · JSON
CoLa-24Liu.tdb	X.Y. Liu, P.P. Liu, C. Tan, S.Y. Yang, Y.C. Bai, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 84, 102653(2024). doi:10.1016/j.calphad.2023.102653	`1f229b6d94fecc03bea809aeac21685fb7ca59d16a781132eb9c7f4855c63ef2`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CoLa-08Wan.tdb	1458.19	FCC_A1 (x(La) 1.000e-5) + CO13LA_D23 (x(La) 0.07143) + LIQUID (x(La) 0.21052)
CoLa-08Wan.tdb	1458.19	FCC_A1 (x(La) 1.000e-5) + CO13LA_D23 (x(La) 0.07143) + LIQUID (x(La) 0.21042)
CoLa-08Wan.tdb	1458.19	FCC_A1 (x(La) 1.000e-5) + CO13LA_D23 (x(La) 0.07143) + LIQUID (x(La) 0.20999)
CoLa-08Wan.tdb	1362.97	CO13LA_D23 (x(La) 0.07143) + CO5LA_D2D (x(La) 0.16667) + LIQUID (x(La) 0.30108)
CoLa-08Wan.tdb	1362.97	CO13LA_D23 (x(La) 0.07143) + CO5LA_D2D (x(La) 0.16667) + LIQUID (x(La) 0.30131)
CoLa-08Wan.tdb	1362.97	CO13LA_D23 (x(La) 0.07143) + CO5LA_D2D (x(La) 0.16667) + LIQUID (x(La) 0.30094)
CoLa-08Wan.tdb	1141.6	CO5LA_D2D (x(La) 0.16667) + CO19LA5 (x(La) 0.20833) + LIQUID (x(La) 0.44303)
CoLa-08Wan.tdb	1141.6	CO5LA_D2D (x(La) 0.16667) + CO19LA5 (x(La) 0.20833) + LIQUID (x(La) 0.44308)
CoLa-08Wan.tdb	1141.6	CO5LA_D2D (x(La) 0.16667) + CO19LA5 (x(La) 0.20833) + LIQUID (x(La) 0.44293)
CoLa-08Wan.tdb	1134	LIQUID (x(La) 0.97133) + FCC_A1 (x(La) 1) + BCC_A2 (x(La) 1)
CoLa-08Wan.tdb	1072.31	CO19LA5 (x(La) 0.20833) + CO7LA2 (x(La) 0.22222) + LIQUID (x(La) 0.47763)
CoLa-08Wan.tdb	1072.31	CO19LA5 (x(La) 0.20833) + CO7LA2 (x(La) 0.22222) + LIQUID (x(La) 0.47765)
CoLa-08Wan.tdb	1072.31	CO19LA5 (x(La) 0.20833) + CO7LA2 (x(La) 0.22222) + LIQUID (x(La) 0.47774)
CoLa-08Wan.tdb	968.46	CO7LA2 (x(La) 0.22222) + CO3LA2 (x(La) 0.4) + LIQUID (x(La) 0.52444)
CoLa-08Wan.tdb	968.46	CO7LA2 (x(La) 0.22222) + CO3LA2 (x(La) 0.4) + LIQUID (x(La) 0.52408)
CoLa-08Wan.tdb	968.46	CO7LA2 (x(La) 0.22222) + CO3LA2 (x(La) 0.4) + LIQUID (x(La) 0.52446)
CoLa-08Wan.tdb	843.3	CO3LA2 (x(La) 0.4) + CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.6242)
CoLa-08Wan.tdb	843.3	CO3LA2 (x(La) 0.4) + CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.62368)
CoLa-08Wan.tdb	843.3	CO3LA2 (x(La) 0.4) + CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.62441)
CoLa-08Wan.tdb	796.54	CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.68585) + COLA3_D011 (x(La) 0.75)
CoLa-08Wan.tdb	796.53	CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.68558) + COLA3_D011 (x(La) 0.75)
CoLa-08Wan.tdb	794.59	COLA3_D011 (x(La) 0.75) + LIQUID (x(La) 0.81416) + FCC_A1 (x(La) 1)
CoLa-08Wan.tdb	694.99	HCP_A3 (x(La) 0) + FCC_A1 (x(La) 0) + CO13LA_D23 (x(La) 0.07143)
CoLa-08Wan.tdb	550	COLA3_D011 (x(La) 0.75) + DHCP (x(La) 1) + FCC_A1 (x(La) 1)
CoLa-08Wan.tdb	451.8	CO5LA_D2D (x(La) 0.16667) + CO19LA5 (x(La) 0.20833) + CO7LA2 (x(La) 0.22222)
CoLa-24Liu.tdb	1453.35	FCC_A1 (x(La) 2.900e-4) + CO13LA_D23 (x(La) 0.07143) + LIQUID (x(La) 0.24006)
CoLa-24Liu.tdb	1453.35	FCC_A1 (x(La) 2.900e-4) + CO13LA_D23 (x(La) 0.07143) + LIQUID (x(La) 0.24005)
CoLa-24Liu.tdb	1364.81	CO13LA_D23 (x(La) 0.07143) + CO5LA_D2D (x(La) 0.16667) + LIQUID (x(La) 0.30522)
CoLa-24Liu.tdb	1364.81	CO13LA_D23 (x(La) 0.07143) + CO5LA_D2D (x(La) 0.16667) + LIQUID (x(La) 0.30534)
CoLa-24Liu.tdb	1364.81	CO13LA_D23 (x(La) 0.07143) + CO5LA_D2D (x(La) 0.16667) + LIQUID (x(La) 0.30497)
CoLa-24Liu.tdb	1133.89	LIQUID (x(La) 0.97115) + BCC_A2 (x(La) 0.99997) + FCC_A1 (x(La) 1)
CoLa-24Liu.tdb	1126.91	CO5LA_D2D (x(La) 0.16667) + CO19LA5 (x(La) 0.20833) + LIQUID (x(La) 0.4509)
CoLa-24Liu.tdb	1126.91	CO5LA_D2D (x(La) 0.16667) + CO19LA5 (x(La) 0.20833) + LIQUID (x(La) 0.4508)
CoLa-24Liu.tdb	1126.91	CO5LA_D2D (x(La) 0.16667) + CO19LA5 (x(La) 0.20833) + LIQUID (x(La) 0.451)
CoLa-24Liu.tdb	1117.2	CO19LA5 (x(La) 0.20833) + CO7LA2 (x(La) 0.22222) + LIQUID (x(La) 0.45638)
CoLa-24Liu.tdb	1117.2	CO19LA5 (x(La) 0.20833) + CO7LA2 (x(La) 0.22222) + LIQUID (x(La) 0.45632)
CoLa-24Liu.tdb	1117.2	CO19LA5 (x(La) 0.20833) + CO7LA2 (x(La) 0.22222) + LIQUID (x(La) 0.45648)
CoLa-24Liu.tdb	965.34	CO7LA2 (x(La) 0.22222) + CO3LA2 (x(La) 0.4) + LIQUID (x(La) 0.53296)
CoLa-24Liu.tdb	965.34	CO7LA2 (x(La) 0.22222) + CO3LA2 (x(La) 0.4) + LIQUID (x(La) 0.53263)
CoLa-24Liu.tdb	965.34	CO7LA2 (x(La) 0.22222) + CO3LA2 (x(La) 0.4) + LIQUID (x(La) 0.53301)
CoLa-24Liu.tdb	840.1	CO3LA2 (x(La) 0.4) + CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.62812)
CoLa-24Liu.tdb	840.1	CO3LA2 (x(La) 0.4) + CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.62768)
CoLa-24Liu.tdb	840.1	CO3LA2 (x(La) 0.4) + CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.62832)
CoLa-24Liu.tdb	797.66	COLA3_D011 (x(La) 0.75) + LIQUID (x(La) 0.80458) + FCC_A1 (x(La) 0.99999)
CoLa-24Liu.tdb	797.66	COLA3_D011 (x(La) 0.75) + LIQUID (x(La) 0.80459) + FCC_A1 (x(La) 0.99999)
CoLa-24Liu.tdb	792.85	CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.68598) + COLA3_D011 (x(La) 0.75)
CoLa-24Liu.tdb	792.85	CO23LA27 (x(La) 0.54) + LIQUID (x(La) 0.68623) + COLA3_D011 (x(La) 0.75)
CoLa-24Liu.tdb	694.99	HCP_A3 (x(La) 0) + FCC_A1 (x(La) 0) + CO13LA_D23 (x(La) 0.07143)
CoLa-24Liu.tdb	550	COLA3_D011 (x(La) 0.75) + DHCP (x(La) 1) + FCC_A1 (x(La) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CoLa-08Wan

Invariant reactions (literature)

Invariant reactions reported in the literature for the Co–La system (26)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1548.15	peritectic: L + fcc (Co) -> Co13La	L: Co 0.81; fcc (Co): Co 0.999; Co13La: Co 0.929	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 2 report
1458.15	peritectic: L + fcc (Co) -> Co13La	L: Co 0.803; fcc (Co): Co 0.999; Co13La: Co 0.929	experimental	[1] Wang 2008 cites Buschow 1967	Table 2, p. 5, row 1 report
1458.15	peritectic: L + fcc (Co) -> Co13La	L: Co 0.789; fcc (Co): Co 0.999; Co13La: Co 0.929	model	[1] Wang 2008	Table 2, p. 5, row 3 report
1397.15	peritectic: L + Co13La -> Co5La	L: Co 0.73; Co13La: Co 0.929; Co5La: Co 0.834	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 5 report
1363.15	peritectic: L + Co13La -> Co5La	L: Co 0.699; Co13La: Co 0.929; Co5La: Co 0.834	model	[1] Wang 2008	Table 2, p. 5, row 6 report
1363.15	peritectic: L + Co13La -> Co5La	L: Co 0.717; Co13La: Co 0.929; Co5La: Co 0.834	experimental	[1] Wang 2008 cites Buschow 1967	Table 2, p. 5, row 4 report
1141.15	peritectic: L + Co5La -> Co19La5	L: Co 0.557; Co5La: Co 0.834; Co19La5: Co 0.791	model	[1] Wang 2008	Table 2, p. 5, row 8 report
1141.15	peritectic: L + Co5La -> Co19La5	L: Co 0.552; Co5La: Co 0.834; Co19La5: Co 0.791	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 7 report
1116.15	peritectic: L + Co19La5 -> Co7La2	L: Co 0.543; Co19La5: Co 0.791; Co7La2: Co 0.778	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 10 report
1073.15	peritectic: L + Co19La5 -> Co7La2	L: Co 0.528; Co19La5: Co 0.791; Co7La2: Co 0.778	experimental	[1] Wang 2008 cites Buschow 1967	Table 2, p. 5, row 9 report
1073.15	peritectic: L + Co19La5 -> Co7La2	L: Co 0.523; Co19La5: Co 0.791; Co7La2: Co 0.778	model	[1] Wang 2008	Table 2, p. 5, row 11 report
1000.15	peritectic: L + Co7La2 -> Co3La2	L: Co 0.495; Co7La2: Co 0.778; Co3La2: Co 0.6	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 13 report
968.15	peritectic: L + Co7La2 -> Co3La2	L: Co 0.481; Co7La2: Co 0.778; Co3La2: Co 0.6	experimental	[1] Wang 2008 cites Buschow 1967	Table 2, p. 5, row 12 report
968.15	peritectic: L + Co7La2 -> Co3La2	L: Co 0.476; Co7La2: Co 0.778; Co3La2: Co 0.6	model	[1] Wang 2008	Table 2, p. 5, row 14 report
869.15	peritectic: L + Co3La2 -> Co23La27	L: Co 0.375; Co3La2: Co 0.6; Co23La27: Co 0.46	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 16 report
843.15	peritectic: L + Co3La2 -> Co23La27	L: Co 0.376; Co3La2: Co 0.6; Co23La27: Co 0.46	model	[1] Wang 2008	Table 2, p. 5, row 17 report
843.15	peritectic: L + Co3La2 -> Co23La27	L: Co 0.357; Co3La2: Co 0.6; Co23La27: Co 0.46	experimental	[1] Wang 2008 cites Buschow 1967	Table 2, p. 5, row 15 report
818.15	congruent melting: L -> CoLa3	CoLa3: Co 0.25	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 25 report
818.15	congruent melting: L -> CoLa3	CoLa3: Co 0.25	experimental	[1] Wang 2008 cites Buschow 1967	Table 2, p. 5, row 24 report
816.15	congruent melting: L -> CoLa3	CoLa3: Co 0.25	model	[1] Wang 2008	Table 2, p. 5, row 26 report
796.15	eutectic: L -> Co23La27 + CoLa3	L: Co 0.315; Co23La27: Co 0.46; CoLa3: Co 0.25	model	[1] Wang 2008	Table 2, p. 5, row 20 report
794.15	eutectic: L -> fcc (La) + CoLa3	L: Co 0.187; fcc (La): Co 0.001; CoLa3: Co 0.25	model	[1] Wang 2008	Table 2, p. 5, row 23 report
793.15	eutectic: L -> fcc (La) + CoLa3	L: Co 0.2; fcc (La): Co 0.001; CoLa3: Co 0.25	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 22 report
793.15	eutectic: L -> fcc (La) + CoLa3	L: Co 0.205; fcc (La): Co 0.001; CoLa3: Co 0.25	experimental	[1] Wang 2008 cites Buschow 1967	Table 2, p. 5, row 21 report
773.15	eutectic: L -> Co23La27 + CoLa3	L: Co 0.31; Co23La27: Co 0.46; CoLa3: Co 0.25	experimental	[1] Wang 2008 cites Ray 1974	Table 2, p. 5, row 19 report
773.15	eutectic: L -> Co23La27 + CoLa3	L: Co 0.306; Co23La27: Co 0.46; CoLa3: Co 0.25	experimental	[1] Wang 2008 cites Buschow 1967	Table 2, p. 5, row 18 report

Sources

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

C.P. Wang, J. Wang, X.J. Liu, I. Ohnuma, R. Kainuma, K. Ishida, Thermodynamic assessment of the Co–La and Mo–La systems, Journal of Alloys and Compounds 453, 174-179 (2008). doi:10.1016/j.jallcom.2006.11.155

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}
}