Co–Sm system

83 accepted literature values from 2 paper(s) (experimental 54, model 29); 2 calculated phase diagram(s). 1 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 (14) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	54
model	29

Accepted values by property group
Property group	Values
invariant reaction	62
phase transition	20
mixing / partial	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
CoSm-11Yua.tdb	Y. Yuan, J. Yi, G. Borzone, A. Watson, Calphad, 35, 416-20(2011). doi:10.1016/j.calphad.2011.06.001	`2d48fb36760f4615ddf5f97abfdbee0e6921b431c0b446c571920998b228eb67`	viewer · TDB · JSON
CoSm-98Su.tdb	X. Su, W. Zhang, G. Liu, Z. Du, J. Alloys Compd., 267, 149-53(1998). doi:10.1016/S0925-8388(97)00540-9	`f5878d03ef199ecd236e91fd2bd4105a163508ecbf8b65cff7c980b4ae3e16ac`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
CoSm-11Yua.tdb	1599.76	FCC_A1 (x(Sm) 0.00326) + LIQUID (x(Sm) 0.08109) + CO17SM2 (x(Sm) 0.11232)
CoSm-11Yua.tdb	1593.2	CO17SM2 (x(Sm) 0.1188) + CO5SM (x(Sm) 0.14742) + LIQUID (x(Sm) 0.16075)
CoSm-11Yua.tdb	1541.69	CO5SM (x(Sm) 0.17864) + CO19SM5 (x(Sm) 0.20833) + LIQUID (x(Sm) 0.23746)
CoSm-11Yua.tdb	1517.44	CO19SM5 (x(Sm) 0.20833) + CO7SM2 (x(Sm) 0.22222) + LIQUID (x(Sm) 0.26976)
CoSm-11Yua.tdb	1517.44	CO19SM5 (x(Sm) 0.20833) + CO7SM2 (x(Sm) 0.22222) + LIQUID (x(Sm) 0.27002)
CoSm-11Yua.tdb	1477.83	CO7SM2 (x(Sm) 0.22222) + CO3SM (x(Sm) 0.25) + LIQUID (x(Sm) 0.30846)
CoSm-11Yua.tdb	1477.83	CO7SM2 (x(Sm) 0.22222) + CO3SM (x(Sm) 0.25) + LIQUID (x(Sm) 0.30871)
CoSm-11Yua.tdb	1345.64	CO3SM (x(Sm) 0.25) + CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.4004)
CoSm-11Yua.tdb	1345.64	CO3SM (x(Sm) 0.25) + CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.40033)
CoSm-11Yua.tdb	1345.64	CO3SM (x(Sm) 0.25) + CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.40045)
CoSm-11Yua.tdb	1087.07	CO17SM2 (x(Sm) 0.10753) + CO5SM (x(Sm) 0.16288) + CO19SM5 (x(Sm) 0.20833)
CoSm-11Yua.tdb	954.01	COSM3_D011 (x(Sm) 0.75) + LIQUID (x(Sm) 0.80298) + BCC_A2 (x(Sm) 0.92838)
CoSm-11Yua.tdb	954.01	COSM3_D011 (x(Sm) 0.75) + LIQUID (x(Sm) 0.80303) + BCC_A2 (x(Sm) 0.9284)
CoSm-11Yua.tdb	946.22	COSM3_D011 (x(Sm) 0.75) + BCC_A2 (x(Sm) 0.93042) + HCP_A3 (x(Sm) 0.99374)
CoSm-11Yua.tdb	946.22	COSM3_D011 (x(Sm) 0.75) + BCC_A2 (x(Sm) 0.93048) + HCP_A3 (x(Sm) 0.99375)
CoSm-11Yua.tdb	882.86	LIQUID (x(Sm) 0.62803) + CO2SM5 (x(Sm) 0.71429) + COSM3_D011 (x(Sm) 0.75)
CoSm-11Yua.tdb	882.86	LIQUID (x(Sm) 0.62818) + CO2SM5 (x(Sm) 0.71429) + COSM3_D011 (x(Sm) 0.75)
CoSm-11Yua.tdb	878.85	COSM3_D011 (x(Sm) 0.75) + HCP_A3 (x(Sm) 0.9958) + RHOMB_C19 (x(Sm) 0.99702)
CoSm-11Yua.tdb	878.85	COSM3_D011 (x(Sm) 0.75) + HCP_A3 (x(Sm) 0.99581) + RHOMB_C19 (x(Sm) 0.99702)
CoSm-11Yua.tdb	872.48	CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.61846) + CO2SM5 (x(Sm) 0.71429)
CoSm-11Yua.tdb	872.48	CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.61833) + CO2SM5 (x(Sm) 0.71429)
CoSm-11Yua.tdb	872.48	CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.61848) + CO2SM5 (x(Sm) 0.71429)
CoSm-11Yua.tdb	790.45	CO17SM2 (x(Sm) 0.1053) + CO19SM5 (x(Sm) 0.20833) + CO7SM2 (x(Sm) 0.22222)
CoSm-11Yua.tdb	768.35	CO17SM2 (x(Sm) 0.10529) + CO19SM5 (x(Sm) 0.20833) + CO7SM2 (x(Sm) 0.22222)
CoSm-11Yua.tdb	694.99	HCP_A3 (x(Sm) 0) + FCC_A1 (x(Sm) 0) + CO17SM2 (x(Sm) 0.10526)
CoSm-98Su.tdb	1612.38	FCC_A1 (x(Sm) 0.00132) + LIQUID (x(Sm) 0.07906) + CO17SM2 (x(Sm) 0.10526)
CoSm-98Su.tdb	1612.38	FCC_A1 (x(Sm) 0.00132) + LIQUID (x(Sm) 0.07893) + CO17SM2 (x(Sm) 0.10526)
CoSm-98Su.tdb	1589.43	CO17SM2 (x(Sm) 0.10526) + CO5SM (x(Sm) 0.16667) + LIQUID (x(Sm) 0.16999)
CoSm-98Su.tdb	1589.43	CO17SM2 (x(Sm) 0.10526) + CO5SM (x(Sm) 0.16667) + LIQUID (x(Sm) 0.16971)
CoSm-98Su.tdb	1542.98	CO5SM (x(Sm) 0.16667) + CO19SM5 (x(Sm) 0.20833) + LIQUID (x(Sm) 0.25485)
CoSm-98Su.tdb	1542.97	CO5SM (x(Sm) 0.16667) + CO19SM5 (x(Sm) 0.20833) + LIQUID (x(Sm) 0.25531)
CoSm-98Su.tdb	1542.97	CO5SM (x(Sm) 0.16667) + CO19SM5 (x(Sm) 0.20833) + LIQUID (x(Sm) 0.25537)
CoSm-98Su.tdb	1514.09	CO19SM5 (x(Sm) 0.20833) + CO7SM2 (x(Sm) 0.22222) + LIQUID (x(Sm) 0.2971)
CoSm-98Su.tdb	1514.09	CO19SM5 (x(Sm) 0.20833) + CO7SM2 (x(Sm) 0.22222) + LIQUID (x(Sm) 0.29691)
CoSm-98Su.tdb	1514.09	CO19SM5 (x(Sm) 0.20833) + CO7SM2 (x(Sm) 0.22222) + LIQUID (x(Sm) 0.29732)
CoSm-98Su.tdb	1473.06	CO7SM2 (x(Sm) 0.22222) + CO3SM (x(Sm) 0.25) + LIQUID (x(Sm) 0.34318)
CoSm-98Su.tdb	1473.06	CO7SM2 (x(Sm) 0.22222) + CO3SM (x(Sm) 0.25) + LIQUID (x(Sm) 0.34296)
CoSm-98Su.tdb	1473.06	CO7SM2 (x(Sm) 0.22222) + CO3SM (x(Sm) 0.25) + LIQUID (x(Sm) 0.3433)
CoSm-98Su.tdb	1343.69	CO3SM (x(Sm) 0.25) + CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.44703)
CoSm-98Su.tdb	1343.69	CO3SM (x(Sm) 0.25) + CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.44682)
CoSm-98Su.tdb	1343.69	CO3SM (x(Sm) 0.25) + CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.44714)
CoSm-98Su.tdb	1195	LIQUID (x(Sm) 0.91822) + BCC_A2 (x(Sm) 1) + HCP_A3 (x(Sm) 1)
CoSm-98Su.tdb	1195	LIQUID (x(Sm) 0.91844) + HCP_A3 (x(Sm) 1) + BCC_A2 (x(Sm) 1)
CoSm-98Su.tdb	1085.25	CO17SM2 (x(Sm) 0.10526) + CO5SM (x(Sm) 0.16667) + CO19SM5 (x(Sm) 0.20833)
CoSm-98Su.tdb	1006.99	LIQUID (x(Sm) 0.83486) + HCP_A3 (x(Sm) 1) + RHOMB_C19 (x(Sm) 1)
CoSm-98Su.tdb	1006.99	LIQUID (x(Sm) 0.83499) + RHOMB_C19 (x(Sm) 1) + HCP_A3 (x(Sm) 1)
CoSm-98Su.tdb	938.74	COSM3_D011 (x(Sm) 0.75) + LIQUID (x(Sm) 0.81734) + RHOMB_C19 (x(Sm) 1)
CoSm-98Su.tdb	938.74	COSM3_D011 (x(Sm) 0.75) + LIQUID (x(Sm) 0.81737) + RHOMB_C19 (x(Sm) 1)
CoSm-98Su.tdb	938.74	COSM3_D011 (x(Sm) 0.75) + LIQUID (x(Sm) 0.81729) + RHOMB_C19 (x(Sm) 1)
CoSm-98Su.tdb	884.47	LIQUID (x(Sm) 0.64503) + CO4SM9 (x(Sm) 0.69231) + COSM3_D011 (x(Sm) 0.75)
CoSm-98Su.tdb	884.47	LIQUID (x(Sm) 0.64524) + CO4SM9 (x(Sm) 0.69231) + COSM3_D011 (x(Sm) 0.75)
CoSm-98Su.tdb	865.4	CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.62945) + CO4SM9 (x(Sm) 0.69231)
CoSm-98Su.tdb	865.4	CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.62932) + CO4SM9 (x(Sm) 0.69231)
CoSm-98Su.tdb	865.4	CO2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.62948) + CO4SM9 (x(Sm) 0.69231)
CoSm-98Su.tdb	694.99	FCC_A1 (x(Sm) 0) + HCP_A3 (x(Sm) 0) + CO17SM2 (x(Sm) 0.10526)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull CoSm-98Su

Invariant reactions (literature)

Invariant reactions reported in the literature for the Co–Sm system (62)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location	Quote
1612	eutectic: Liq.->α-Co(fcc)+Co17Sm2	L: Sm 0.079; Co17Sm2: Sm 0.105263	model	[1] Su 1998	Table 3, p. 4, row 32 report
1600	eutectic: Liq.->α-Co(fcc)+Co17Sm2	L: Sm 0.092; Co17Sm2: Sm 0.105263	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 33 report
1600	eutectic: Liq -> α(Co) + Sm2Co17	Sm2Co17: Sm 0.105263	model	[2] Yuan 2011	Table 2, p. 3, row 36 report
1600	eutectic: Liq -> α(Co) + Sm2Co17	Sm2Co17: Sm 0.105263	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 37 report
1598	eutectic: Liq.->α-Co(fcc)+Co17Sm2	Co17Sm2: Sm 0.105263	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 34 report
1598	eutectic: Liq -> α(Co) + Sm2Co17	Sm2Co17: Sm 0.105263	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 38 report
1595	Liq.+Co17Sm2->Co5Sm	L: Sm 0.192; Co17Sm2: Sm 0.105263; Co5Sm: Sm 0.166667	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 25 report
1595	Liq + Sm2Co17 -> SmCo5	Sm2Co17: Sm 0.105263; SmCo5: Sm 0.166667	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 31 report
1593	Liq + Sm2Co17 -> SmCo5	Sm2Co17: Sm 0.105263; SmCo5: Sm 0.166667	model	[2] Yuan 2011	Table 2, p. 3, row 30 report
1593	Liq + Sm2Co17 -> SmCo5	Sm2Co17: Sm 0.105263; SmCo5: Sm 0.166667	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 32 report
1593	Liq.+Co17Sm2->Co5Sm	Co17Sm2: Sm 0.105263; Co5Sm: Sm 0.166667	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 26 report
1589	Liq.+Co17Sm2->Co5Sm	L: Sm 0.17; Co17Sm2: Sm 0.105263; Co5Sm: Sm 0.166667	model	[1] Su 1998	Table 3, p. 4, row 24 report
1543	Liq.+Co5Sm->Co19Sm5	L: Sm 0.258; Co5Sm: Sm 0.166667; Co19Sm5: Sm 0.208333	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 23 report
1543	Liq.+Co5Sm->Co19Sm5	L: Sm 0.255; Co5Sm: Sm 0.166667; Co19Sm5: Sm 0.208333	model	[1] Su 1998	Table 3, p. 4, row 22 report
1543	Liq + SmCo5 -> Sm5Co19	SmCo5: Sm 0.166667; Sm5Co19: Sm 0.208333	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 29 report
1541	Liq + SmCo5 -> Sm5Co19	SmCo5: Sm 0.166667; Sm5Co19: Sm 0.208333	model	[2] Yuan 2011	Table 2, p. 3, row 28 report
1517	Liq + Sm5Co19 -> Sm2Co7	Sm5Co19: Sm 0.208333; Sm2Co7: Sm 0.222222	model	[2] Yuan 2011	Table 2, p. 3, row 25 report
1514	Liq.+Co19Sm5->Co7Sm2	L: Sm 0.297; Co19Sm5: Sm 0.208333; Co7Sm2: Sm 0.222222	model	[1] Su 1998	Table 3, p. 4, row 19 report
1514	Liq.+Co19Sm5->Co7Sm2	L: Sm 0.285; Co19Sm5: Sm 0.208333; Co7Sm2: Sm 0.222222	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 20 report
1514	Liq + Sm5Co19 -> Sm2Co7	Sm5Co19: Sm 0.208333; Sm2Co7: Sm 0.222222	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 26 report
1513	Liq + Sm5Co19 -> Sm2Co7	Sm5Co19: Sm 0.208333; Sm2Co7: Sm 0.222222	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 27 report
1513	Liq.+Co19Sm5->Co7Sm2	Co19Sm5: Sm 0.208333; Co7Sm2: Sm 0.222222	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 21 report
1477	Liq + Sm2Co7 -> SmCo3	Sm2Co7: Sm 0.222222; SmCo3: Sm 0.25	model	[2] Yuan 2011	Table 2, p. 3, row 22 report
1473	Liq.+Co7Sm2->Co3Sm	Co7Sm2: Sm 0.222222; Co3Sm: Sm 0.25	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 18 report
1473	Liq + Sm2Co7 -> SmCo3	Sm2Co7: Sm 0.222222; SmCo3: Sm 0.25	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 23 report
1473	Liq + Sm2Co7 -> SmCo3	Sm2Co7: Sm 0.222222; SmCo3: Sm 0.25	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 24 report
1473	Liq.+Co7Sm2->Co3Sm	L: Sm 0.34; Co7Sm2: Sm 0.222222; Co3Sm: Sm 0.25	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 17 report
1473	Liq.+Co7Sm2->Co3Sm	L: Sm 0.343; Co7Sm2: Sm 0.222222; Co3Sm: Sm 0.25	model	[1] Su 1998	Table 3, p. 4, row 16 report
1348	Liq.+Co3Sm->Co2Sm	Co3Sm: Sm 0.25; Co2Sm: Sm 0.333333	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 15 report
1348	Liq + SmCo3 -> SmCo2	SmCo3: Sm 0.25; SmCo2: Sm 0.333333	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 21 report
1345	Liq + SmCo3 -> SmCo2	SmCo3: Sm 0.25; SmCo2: Sm 0.333333	model	[2] Yuan 2011	Table 2, p. 3, row 19 report
1344	Liq.+Co3Sm->Co2Sm	L: Sm 0.447; Co3Sm: Sm 0.25; Co2Sm: Sm 0.333333	model	[1] Su 1998	Table 3, p. 4, row 13 report
1343	Liq.+Co3Sm->Co2Sm	L: Sm 0.412; Co3Sm: Sm 0.25; Co2Sm: Sm 0.333333	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 14 report
1343	Liq + SmCo3 -> SmCo2	SmCo3: Sm 0.25; SmCo2: Sm 0.333333	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 20 report
1087	SmCo5 -> Sm5Co19 + Sm2Co17	SmCo5: Sm 0.166667; Sm5Co19: Sm 0.208333; Sm2Co17: Sm 0.105263	model	[2] Yuan 2011	Table 2, p. 3, row 39 report
1085	Co5Sm->Co19Sm5+Co17Sm2	Co5Sm: Sm 0.166667; Co19Sm5: Sm 0.208333; Co17Sm2: Sm 0.105263	model	[1] Su 1998	Table 3, p. 4, row 30 report
1083	SmCo5 -> Sm5Co19 + Sm2Co17	SmCo5: Sm 0.166667; Sm5Co19: Sm 0.208333; Sm2Co17: Sm 0.105263	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 40 report
1083	Co5Sm->Co19Sm5+Co17Sm2	Co5Sm: Sm 0.166667; Co19Sm5: Sm 0.208333; Co17Sm2: Sm 0.105263	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 31 report
1023	eutectoid: SmCo5 -> Sm2 Co7 + Sm2 Co17		model	[2] Yuan 2011 cites Van 1968 doi	p. 1 report	SmCo5 undergoes eutectoidal decomposition into Sm2 Co7 and Sm2 Co17 at about 1023 K.
958	eutectic: Liq -> γ(Sm) + Sm3Co	Sm3Co: Sm 0.75	experimental	[2] Yuan 2011 cites Yuan 2010 doi	Table 2, p. 3, row 2 report
954	eutectic: Liq -> γ(Sm) + Sm3Co	Sm3Co: Sm 0.75	model	[2] Yuan 2011	Table 2, p. 3, row 1 report
948	γ(Sm) -> β(Sm) + Sm3Co	Sm3Co: Sm 0.75	experimental	[2] Yuan 2011 cites Yuan 2010 doi	Table 2, p. 3, row 4 report
946	γ(Sm) -> β(Sm) + Sm3Co	Sm3Co: Sm 0.75	model	[2] Yuan 2011	Table 2, p. 3, row 3 report
943	eutectic: Liq.->α-Sm(r hom)+CoSm3	L: Sm 0.83; α-Sm(r hom): Sm 1; CoSm3: Sm 0.75	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 2 report
938.8	eutectic: Liq.->α-Sm(r hom)+CoSm3	L: Sm 0.817; α-Sm(r hom): Sm 1; CoSm3: Sm 0.75	model	[1] Su 1998	Table 3, p. 4, row 1 report
886	Liq + Sm3Co -> Sm5Co2	Sm3Co: Sm 0.75; Sm5Co2: Sm 0.714286	experimental	[2] Yuan 2011 cites Yuan 2010 doi	Table 2, p. 3, row 12 report
886	Liq + Sm3Co -> Sm5Co2	Sm3Co: Sm 0.75; Sm5Co2: Sm 0.714286	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 13 report
886	Liq.+CoSm3->Co4Sm9	L: Sm 0.644; CoSm3: Sm 0.75; Co4Sm9: Sm 0.692308	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 8 report
884.4	Liq.+CoSm3->Co4Sm9	L: Sm 0.645; CoSm3: Sm 0.75; Co4Sm9: Sm 0.692308	model	[1] Su 1998	Table 3, p. 4, row 7 report
883	Liq + Sm3Co -> Sm5Co2	Sm3Co: Sm 0.75; Sm5Co2: Sm 0.714286	model	[2] Yuan 2011	Table 2, p. 3, row 11 report
883	β(Sm) -> α(Sm) + Sm3Co	Sm3Co: Sm 0.75	experimental	[2] Yuan 2011 cites Yuan 2010 doi	Table 2, p. 3, row 6 report
879	β(Sm) -> α(Sm) + Sm3Co	Sm3Co: Sm 0.75	model	[2] Yuan 2011	Table 2, p. 3, row 5 report
878	Liq.+CoSm3->Co4Sm9	CoSm3: Sm 0.75; Co4Sm9: Sm 0.692308	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 9 report
878	Liq + Sm3Co -> Sm5Co2	Sm3Co: Sm 0.75; Sm5Co2: Sm 0.714286	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 14 report
872	eutectic: Liq -> Sm5Co2 + SmCo2	Sm5Co2: Sm 0.714286; SmCo2: Sm 0.333333	model	[2] Yuan 2011	Table 2, p. 3, row 15 report
868	eutectic: Liq.->α-Sm(r hom)+CoSm3	α-Sm(r hom): Sm 1; CoSm3: Sm 0.75	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 3 report
865.4	eutectic: Liq.->Co4Sm9+Co2Sm	L: Sm 0.63; Co4Sm9: Sm 0.692308; Co2Sm: Sm 0.333333	model	[1] Su 1998	Table 3, p. 4, row 10 report
863	eutectic: Liq.->Co4Sm9+Co2Sm	L: Sm 0.63; Co4Sm9: Sm 0.692308; Co2Sm: Sm 0.333333	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 11 report
863	eutectic: Liq -> Sm5Co2 + SmCo2	Sm5Co2: Sm 0.714286; SmCo2: Sm 0.333333	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 17 report
856	eutectic: Liq -> Sm5Co2 + SmCo2	Sm5Co2: Sm 0.714286; SmCo2: Sm 0.333333	experimental	[2] Yuan 2011 cites Yuan 2010 doi	Table 2, p. 3, row 16 report
848	eutectic: Liq.->Co4Sm9+Co2Sm	Co4Sm9: Sm 0.692308; Co2Sm: Sm 0.333333	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 12 report
848	eutectic: Liq -> Sm5Co2 + SmCo2	Sm5Co2: Sm 0.714286; SmCo2: Sm 0.333333	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 18 report

Other properties

Phase transition (20)

Phase transition, Co–Sm system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	226.7 K	226.7	magnetic: Co2Sm alloy: Sm 0.333333	experimental	[1] Su 1998 cites Buschow 1977 doi	Table 2, p. 3, row 1 report
Phase transition	590 K	590	magnetic: Co3Sm alloy: Sm 0.25	experimental	[1] Su 1998	Table 2, p. 3, row 2 report
Phase transition	713 K	713	magnetic: Co7Sm2 alloy: Sm 0.222222	experimental	[1] Su 1998 cites Buschow 1977 doi	Table 2, p. 3, row 3 report
Phase transition	830 K	830	magnetic: Co19Sm5 alloy: Sm 0.208333	experimental	[1] Su 1998	Table 2, p. 3, row 4 report
Phase transition	968 K	968	Liq -> Sm3Co L: Sm 0.75; Sm3Co: Sm 0.75	experimental	[2] Yuan 2011 cites Yuan 2010 doi	Table 2, p. 3, row 8 report
Phase transition	968 K	968	Liq -> Sm3Co L: Sm 0.75; Sm3Co: Sm 0.75	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 10 report
Phase transition	968 K	968	Liq.->CoSm3 L: Sm 0.75; CoSm3: Sm 0.75	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 6 report
Phase transition	970 K	970	Liq -> Sm3Co L: Sm 0.75; Sm3Co: Sm 0.75	model	[2] Yuan 2011	Table 2, p. 3, row 7 report
Phase transition	973 K	973	Liq -> Sm3Co L: Sm 0.75; Sm3Co: Sm 0.75	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 9 report
Phase transition	973 K	973	Liq.->CoSm3 L: Sm 0.75; CoSm3: Sm 0.75	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 5 report
Phase transition	977.5 K	977.5	Liq.->CoSm3 L: Sm 0.75; CoSm3: Sm 0.75	model	[1] Su 1998	Table 3, p. 4, row 4 report
Phase transition	1020 K	1020	magnetic: Co5Sm alloy: Sm 0.166667	experimental	[1] Su 1998 cites Buschow 1977 doi	Table 2, p. 3, row 5 report
Phase transition	1083 K	1083	SmCo5	model	[2] Yuan 2011 cites Ge 1993	p. 1 report	Ge et al. [12] reported the decomposition of SmCo5 taking place at 1083 K and found a small solubility of Sm in fcc-Co.
Phase transition	1195 K	1195	magnetic: Co17Sm2 alloy: Sm 0.105263	experimental	[1] Su 1998 cites Buschow 1977 doi	Table 2, p. 3, row 6 report
Phase transition	1608 K	1608	Liq -> Sm2Co17 L: Sm 0.105263; Sm2Co17: Sm 0.105263	experimental	[2] Yuan 2011 cites Van 1968 doi	Table 2, p. 3, row 35 report
Phase transition	1608 K	1608	Liq.->Co17Sm2 L: Sm 0.105263; Co17Sm2: Sm 0.105263	experimental	[1] Su 1998 cites Buschow 1968 doi	Table 3, p. 4, row 29 report
Phase transition	1614 K	1614	Liq -> Sm2Co17 L: Sm 0.105263; Sm2Co17: Sm 0.105263	model	[2] Yuan 2011	Table 2, p. 3, row 33 report
Phase transition	1619 K	1619	Liq.->Co17Sm2 L: Sm 0.105263; Co17Sm2: Sm 0.105263	model	[1] Su 1998	Table 3, p. 4, row 27 report
Phase transition	1620 K	1620	Liq -> Sm2Co17 L: Sm 0.105263; Sm2Co17: Sm 0.105263	experimental	[2] Yuan 2011 cites Ge 1993 doi	Table 2, p. 3, row 34 report
Phase transition	1620 K	1620	Liq.->Co17Sm2 L: Sm 0.105263; Co17Sm2: Sm 0.105263	experimental	[1] Su 1998 cites Ge 1993 doi	Table 3, p. 4, row 28 report

Mixing / partial (1)

Mixing / partial, Co–Sm system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Partial enthalpy printed: limiting partial enthalpy of mixing	-55.5 kJ/mol (basis unstated)	1400	liquid	model	[2] Yuan 2011	p. 3 report	The calculated limiting partial enthalpy of mixing of Co in the Co-Sm liquid at 1400 K is -55.5 kJ/mol, which agrees well with the value of -50.5 ± 3.9 kJ/mol reported by Usenko and Ivanov [20].

Sources

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

Xuping Su, Weijing Zhang, Guoquan Liu, Zhenmin Du, A thermodynamic assessment of the Co–Sm system, Journal of Alloys and Compounds 267, 149-153 (1998). doi:10.1016/s0925-8388(97)00540-9
Yuan Yuan, Jianhong Yi, Gabriella Borzone, Andy Watson, Thermodynamic modeling of the Co–Sm system, Calphad 35, 416-420 (2011). doi:10.1016/j.calphad.2011.06.001

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}
}