Mg–Sm system

65 accepted literature values from 3 paper(s) (experimental 43, model 22); 3 calculated phase diagram(s). 34 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 (11) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	43
model	22

Accepted values by property group
Property group	Values
invariant reaction	44
phase transition	11
phase equilibrium	1
formation	8
other property	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
MgSm-08Jia.tdb	B.R. Jia, L.B. Liu, D.Q. Yi, Z.P. Jin, J.F. Nie, J. Alloys Compd., 459, 267-73(2008). doi:10.1016/j.jallcom.2007.05.035	`95e32e81e730e1eea4f60f3bd3f96b8b1c26158d2cf169d9d79719628ec7e38f`	viewer · TDB · JSON
MgSm-10Guo.tdb	C. Guo, Z. Du, C. Li, Calphad, 34, 90-97(2010). doi:10.1016/j.calphad.2009.12.006	`74f15429343690e9d4a17d00f6a738e58e6be758714cfe34ac4b3d36b2374b4e`	viewer · TDB · JSON
MgSm-24Jia.tdb	R. Jiang, X. Duan, D. Li, C. He, J. Phase Equilib. Diffus., 45, 520-36(2024). doi:10.1007/s11669-024-01111-0	`5a4755c28397807eadfc6a9619958f289a263dc81034417ae55a28a162a8eef6`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
MgSm-08Jia.tdb	1192.36	RHOMB_C19 (x(Sm) 1) + BCC_A2 (x(Sm) 1) + HCP_A3 (x(Sm) 1)
MgSm-08Jia.tdb	1062.68	MGSM_B2 (x(Sm) 0.5) + LIQUID (x(Sm) 0.55211) + BCC_A2 (x(Sm) 0.69663)
MgSm-08Jia.tdb	1062.68	MGSM_B2 (x(Sm) 0.5) + LIQUID (x(Sm) 0.5522) + BCC_A2 (x(Sm) 0.69674)
MgSm-08Jia.tdb	1012.54	MG2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.36644) + MGSM_B2 (x(Sm) 0.5)
MgSm-08Jia.tdb	1012.54	MG2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.36683) + MGSM_B2 (x(Sm) 0.5)
MgSm-08Jia.tdb	971.06	LIQUID (x(Sm) 0.23819) + MG3SM_D03 (x(Sm) 0.25) + MG2SM_C15 (x(Sm) 0.33333)
MgSm-08Jia.tdb	971.06	LIQUID (x(Sm) 0.23829) + MG3SM_D03 (x(Sm) 0.25) + MG2SM_C15 (x(Sm) 0.33333)
MgSm-08Jia.tdb	854.64	MGSM_B2 (x(Sm) 0.5) + BCC_A2 (x(Sm) 0.78298) + HCP_A3 (x(Sm) 0.94144)
MgSm-08Jia.tdb	854.64	MGSM_B2 (x(Sm) 0.5) + BCC_A2 (x(Sm) 0.78306) + HCP_A3 (x(Sm) 0.94143)
MgSm-08Jia.tdb	854.64	MGSM_B2 (x(Sm) 0.5) + BCC_A2 (x(Sm) 0.78305) + HCP_A3 (x(Sm) 0.94143)
MgSm-08Jia.tdb	836.43	LIQUID (x(Sm) 0.11471) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.25)
MgSm-08Jia.tdb	836.43	LIQUID (x(Sm) 0.11459) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.25)
MgSm-08Jia.tdb	836.43	LIQUID (x(Sm) 0.11498) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.25)
MgSm-08Jia.tdb	830.26	MGSM_B2 (x(Sm) 0.5) + HCP_A3 (x(Sm) 0.94703) + RHOMB_C19 (x(Sm) 0.9504)
MgSm-08Jia.tdb	830.25	MGSM_B2 (x(Sm) 0.5) + HCP_A3 (x(Sm) 0.9473) + RHOMB_C19 (x(Sm) 0.95065)
MgSm-08Jia.tdb	818.61	LIQUID (x(Sm) 0.09885) + MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667)
MgSm-08Jia.tdb	818.61	LIQUID (x(Sm) 0.09901) + MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667)
MgSm-08Jia.tdb	818.61	LIQUID (x(Sm) 0.09868) + MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667)
MgSm-08Jia.tdb	810.47	HCP_A3 (x(Sm) 0.00234) + LIQUID (x(Sm) 0.07974) + MG41SM5 (x(Sm) 0.1087)
MgSm-08Jia.tdb	810.47	HCP_A3 (x(Sm) 0.00234) + LIQUID (x(Sm) 0.0797) + MG41SM5 (x(Sm) 0.1087)
MgSm-10Guo.tdb	1195	HCP_A3 (x(Sm) 1) + B2_BCC (x(Sm) 1) + BCC_A2 (x(Sm) 1)
MgSm-10Guo.tdb	1192.36	RHOMB_C19 (x(Sm) 1) + B2_BCC (x(Sm) 1) + HCP_A3 (x(Sm) 1)
MgSm-10Guo.tdb	1064.38	B2_BCC (x(Sm) 0.51549) + LIQUID (x(Sm) 0.54438) + B2_BCC#2 (x(Sm) 0.69666)
MgSm-10Guo.tdb	1064.38	B2_BCC (x(Sm) 0.51549) + LIQUID (x(Sm) 0.54438) + B2_BCC#2 (x(Sm) 0.69666)
MgSm-10Guo.tdb	1064.38	B2_BCC (x(Sm) 0.51549) + LIQUID (x(Sm) 0.54438) + BCC_A2 (x(Sm) 0.69666)
MgSm-10Guo.tdb	1064.38	B2_BCC (x(Sm) 0.51549) + LIQUID (x(Sm) 0.54438) + BCC_A2 (x(Sm) 0.69666)
MgSm-10Guo.tdb	1014.35	MG2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.3768) + B2_BCC (x(Sm) 0.49971)
MgSm-10Guo.tdb	1014.35	MG2SM_C15 (x(Sm) 0.33333) + LIQUID (x(Sm) 0.3768) + B2_BCC (x(Sm) 0.49971)
MgSm-10Guo.tdb	973	LIQUID (x(Sm) 0.23858) + MG3SM_D03 (x(Sm) 0.25) + MG2SM_C15 (x(Sm) 0.33333)
MgSm-10Guo.tdb	973	LIQUID (x(Sm) 0.23887) + MG3SM_D03 (x(Sm) 0.25) + MG2SM_C15 (x(Sm) 0.33333)
MgSm-10Guo.tdb	852.98	B2_BCC (x(Sm) 0.50944) + B2_BCC#2 (x(Sm) 0.8) + HCP_A3 (x(Sm) 0.97069)
MgSm-10Guo.tdb	852.98	B2_BCC (x(Sm) 0.50944) + B2_BCC#2 (x(Sm) 0.8) + HCP_A3 (x(Sm) 0.97069)
MgSm-10Guo.tdb	852.98	B2_BCC (x(Sm) 0.50944) + BCC_A2 (x(Sm) 0.8) + HCP_A3 (x(Sm) 0.97069)
MgSm-10Guo.tdb	852.98	B2_BCC (x(Sm) 0.50944) + BCC_A2 (x(Sm) 0.8) + HCP_A3 (x(Sm) 0.97069)
MgSm-10Guo.tdb	838	LIQUID (x(Sm) 0.1199) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.25)
MgSm-10Guo.tdb	838	LIQUID (x(Sm) 0.1199) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.25)
MgSm-10Guo.tdb	838	LIQUID (x(Sm) 0.12001) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.25)
MgSm-10Guo.tdb	815.74	LIQUID (x(Sm) 0.10039) + MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667)
MgSm-10Guo.tdb	815.74	LIQUID (x(Sm) 0.10055) + MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667)
MgSm-10Guo.tdb	815.74	LIQUID (x(Sm) 0.10032) + MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667)
MgSm-10Guo.tdb	806.12	HCP_A3 (x(Sm) 0.00782) + LIQUID (x(Sm) 0.07924) + MG41SM5 (x(Sm) 0.1087)
MgSm-10Guo.tdb	806.12	HCP_A3 (x(Sm) 0.00779) + LIQUID (x(Sm) 0.07911) + MG41SM5 (x(Sm) 0.1087)
MgSm-10Guo.tdb	751.52	B2_BCC (x(Sm) 0.50465) + HCP_A3 (x(Sm) 0.98868) + RHOMB_C19 (x(Sm) 0.99196)
MgSm-10Guo.tdb	751.52	B2_BCC (x(Sm) 0.50465) + HCP_A3 (x(Sm) 0.98868) + RHOMB_C19 (x(Sm) 0.99196)
MgSm-24Jia.tdb	1345	BCC_A2 (x(Sm) 1) + LIQUID (x(Sm) 1) + MGSM_B2 (x(Sm) 1)
MgSm-24Jia.tdb	1195	HCP_A3 (x(Sm) 1) + MGSM_B2 (x(Sm) 1) + BCC_A2 (x(Sm) 1)
MgSm-24Jia.tdb	1019.98	MGSM_B2 (x(Sm) 0.50311) + LIQUID (x(Sm) 0.57853) + BCC_A2 (x(Sm) 0.65113)
MgSm-24Jia.tdb	1019.98	MGSM_B2 (x(Sm) 0.50311) + LIQUID (x(Sm) 0.57853) + BCC_A2 (x(Sm) 0.65113)
MgSm-24Jia.tdb	989.85	MG2SM_C15 (x(Sm) 0.34357) + LIQUID (x(Sm) 0.36822) + MGSM_B2 (x(Sm) 0.45449)
MgSm-24Jia.tdb	989.85	MG2SM_C15 (x(Sm) 0.34357) + LIQUID (x(Sm) 0.36822) + MGSM_B2 (x(Sm) 0.45449)
MgSm-24Jia.tdb	973.09	MG3SM_D03 (x(Sm) 0.24707) + LIQUID (x(Sm) 0.28373) + MG2SM_C15 (x(Sm) 0.33341)
MgSm-24Jia.tdb	864.02	MGSM_B2 (x(Sm) 0.50811) + BCC_A2 (x(Sm) 0.76481) + HCP_A3 (x(Sm) 0.9009)
MgSm-24Jia.tdb	864.02	MGSM_B2 (x(Sm) 0.50811) + BCC_A2 (x(Sm) 0.76481) + HCP_A3 (x(Sm) 0.9009)
MgSm-24Jia.tdb	860.33	LIQUID (x(Sm) 0.12103) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.21593)
MgSm-24Jia.tdb	839.93	LIQUID (x(Sm) 0.10683) + MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667)
MgSm-24Jia.tdb	839.93	LIQUID (x(Sm) 0.1067) + MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667)
MgSm-24Jia.tdb	821.66	HCP_A3 (x(Sm) 0.00858) + LIQUID (x(Sm) 0.07312) + MG41SM5 (x(Sm) 0.1087)
MgSm-24Jia.tdb	821.66	HCP_A3 (x(Sm) 0.00857) + LIQUID (x(Sm) 0.07306) + MG41SM5 (x(Sm) 0.1087)
MgSm-24Jia.tdb	729.15	MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.21731)
MgSm-24Jia.tdb	729.15	MG41SM5 (x(Sm) 0.1087) + MG5SM (x(Sm) 0.16667) + MG3SM_D03 (x(Sm) 0.21732)
MgSm-24Jia.tdb	696.84	MG3SM_D03 (x(Sm) 0.24989) + MG2SM_C15 (x(Sm) 0.33396) + MGSM_B2 (x(Sm) 0.4906)
MgSm-24Jia.tdb	696.84	MG3SM_D03 (x(Sm) 0.24989) + MG2SM_C15 (x(Sm) 0.33396) + MGSM_B2 (x(Sm) 0.4906)
MgSm-24Jia.tdb	477.3	MGSM_B2 (x(Sm) 0.50022) + HCP_A3 (x(Sm) 0.99074) + RHOMB_C19 (x(Sm) 1)
MgSm-24Jia.tdb	477.3	MGSM_B2 (x(Sm) 0.50022) + HCP_A3 (x(Sm) 0.99077) + RHOMB_C19 (x(Sm) 1)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull MgSm-08Jia · CALPHAD hull MgSm-10Guo

Invariant reactions (literature)

Invariant reactions reported in the literature for the Mg–Sm system (44)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1063	eutectic: L -> Bcc(Sm) + MgSm	L: Sm 0.552; Bcc(Sm): Sm 0.697; MgSm: Sm 0.5	model	[1] Jia 2008	Table 2, p. 5, row 3 report
1058.15	eutectic: L ⇄ MgSm + γ-Sm	L: Sm 0.55; MgSm: Sm 0.5; γ-Sm: Sm 0.66	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 33 report
1058	eutectic: L -> Bcc(Sm) + MgSm	L: Sm 0.55; Bcc(Sm): Sm 0.66; MgSm: Sm 0.5	experimental	[1] Jia 2008 cites Saccone 1989 doi	Table 2, p. 5, row 1 report
1053	eutectic: L -> Bcc(Sm) + MgSm	Bcc(Sm): Sm 0.676; MgSm: Sm 0.5	experimental	[1] Jia 2008 cites Kato 1963	Table 2, p. 5, row 2 report
1020.15	eutectic: L ⇄ MgSm + γ-Sm	L: Sm 0.579; MgSm: Sm 0.503; γ-Sm: Sm 0.651	model	[2] Jiang 2024	Table 4, p. 14, row 31 report
1017.15	eutectic: L ⇄ MgSm + γ-Sm	L: Sm 0.55; MgSm: Sm 0.508; γ-Sm: Sm 0.648	experimental	[2] Jiang 2024	Table 4, p. 14, row 32 report
1013	eutectic: L -> MgSm + Mg2Sm	L: Sm 0.366; MgSm: Sm 0.5; Mg2Sm: Sm 0.333	model	[1] Jia 2008	Table 2, p. 5, row 7 report
1008.15	eutectic: L ⇄ Mg2Sm + MgSm	L: Sm 0.355; Mg2Sm: Sm 0.333; MgSm: Sm 0.5	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 24 report
1008	eutectic: L -> MgSm + Mg2Sm	L: Sm 0.355; MgSm: Sm 0.5; Mg2Sm: Sm 0.333	experimental	[1] Jia 2008 cites Saccone 1989 doi	Table 2, p. 5, row 6 report
993.15	eutectic: L ⇄ Mg2Sm + MgSm	L: Sm 0.379; Mg2Sm: Sm 0.333; MgSm: Sm 0.5	experimental	[2] Jiang 2024 cites Zheng 1986	Table 4, p. 14, row 25 report
990.15	eutectic: L ⇄ Mg2Sm + MgSm	L: Sm 0.368; Mg2Sm: Sm 0.344; MgSm: Sm 0.455	model	[2] Jiang 2024	Table 4, p. 14, row 22 report
988.15	eutectic: L ⇄ Mg2Sm + MgSm	L: Sm 0.371; Mg2Sm: Sm 0.333; MgSm: Sm 0.455	experimental	[2] Jiang 2024	Table 4, p. 14, row 23 report
973	peritectic: L + Mg2Sm -> Mg3Sm	L: Sm 0.23; Mg2Sm: Sm 0.333; Mg3Sm: Sm 0.25	experimental	[1] Jia 2008 cites Saccone 1989 doi	Table 2, p. 5, row 10 report
971	peritectic: L + Mg2Sm -> Mg3Sm	L: Sm 0.238; Mg2Sm: Sm 0.333; Mg3Sm: Sm 0.25	model	[1] Jia 2008	Table 2, p. 5, row 11 report
970.15	eutectic: L ⇄ Mg2Sm + Mg3Sm	L: Sm 0.256; Mg2Sm: Sm 0.309; Mg3Sm: Sm 0.25	experimental	[2] Jiang 2024	Table 4, p. 14, row 18 report
885	eutectoid: Bcc(Sm) -> Hcp(Sm) + MgSm	Bcc(Sm): Sm 0.755; MgSm: Sm 0.5	experimental	[1] Jia 2008 cites Kato 1963	Table 2, p. 5, row 18 report
866.15	eutectoid: γ-Sm ⇄ MgSm + β-Sm	γ-Sm: Sm 0.753; MgSm: Sm 0.502	experimental	[2] Jiang 2024	Table 4, p. 14, row 35 report
864.15	eutectoid: γ-Sm ⇄ MgSm + β-Sm	γ-Sm: Sm 0.765; MgSm: Sm 0.508; β-Sm: Sm 0.901	model	[2] Jiang 2024	Table 4, p. 14, row 34 report
860.15	peritectic: L + Mg3Sm ⇄ Mg5Sm	L: Sm 0.121; Mg3Sm: Sm 0.216; Mg5Sm: Sm 0.167	model	[2] Jiang 2024	Table 4, p. 14, row 9 report
856.15	peritectic: L + Mg3Sm ⇄ Mg5Sm	Mg3Sm: Sm 0.212; Mg5Sm: Sm 0.167	experimental	[2] Jiang 2024	Table 4, p. 14, row 10 report
855	eutectoid: Bcc(Sm) -> Hcp(Sm) + MgSm	Bcc(Sm): Sm 0.783; Hcp(Sm): Sm 0.9414; MgSm: Sm 0.5	model	[1] Jia 2008	Table 2, p. 5, row 19 report
853.15	peritectic: L + Mg3Sm ⇄ Mg5Sm	L: Sm 0.1; Mg3Sm: Sm 0.25; Mg5Sm: Sm 0.167	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 12 report
853.15	eutectoid: γ-Sm ⇄ MgSm + β-Sm	γ-Sm: Sm 0.8; MgSm: Sm 0.5	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 36 report
853	eutectoid: Bcc(Sm) -> Hcp(Sm) + MgSm	Bcc(Sm): Sm 0.8; MgSm: Sm 0.5	experimental	[1] Jia 2008 cites Saccone 1989 doi	Table 2, p. 5, row 17 report
841.15	peritectic: L + Mg5Sm ⇄ Mg41Sm5	Mg5Sm: Sm 0.167; Mg41Sm5: Sm 0.109	experimental	[2] Jiang 2024	Table 4, p. 14, row 7 report
840.15	peritectic: L + Mg5Sm ⇄ Mg41Sm5	L: Sm 0.107; Mg5Sm: Sm 0.167; Mg41Sm5: Sm 0.109	model	[2] Jiang 2024	Table 4, p. 14, row 6 report
838.15	peritectic: L + Mg3Sm ⇄ Mg5Sm	L: Sm 0.1; Mg3Sm: Sm 0.25; Mg5Sm: Sm 0.167	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 11 report
838	peritectic: L + Mg3Sm -> Mg5Sm	L: Sm 0.1; Mg3Sm: Sm 0.25; Mg5Sm: Sm 0.167	experimental	[1] Jia 2008 cites Kinzhibalo 1985	Table 2, p. 5, row 12 report
836	peritectic: L + Mg3Sm -> Mg5Sm	L: Sm 0.115; Mg3Sm: Sm 0.25; Mg5Sm: Sm 0.167	model	[1] Jia 2008	Table 2, p. 5, row 13 report
833.15	peritectic: L + Mg5Sm ⇄ Mg41Sm5	Mg5Sm: Sm 0.167; Mg41Sm5: Sm 0.109	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 8 report
821.15	eutectic: L ⇄ Mg + Mg41Sm5	L: Sm 0.073; Mg: Sm 0.009; Mg41Sm5: Sm 0.109	model	[2] Jiang 2024	Table 4, p. 14, row 1 report
820.15	eutectic: L ⇄ Mg + Mg41Sm5	L: Sm 0.08; Mg: Sm 0.009; Mg41Sm5: Sm 0.109	experimental	[2] Jiang 2024	Table 4, p. 14, row 2 report
819	peritectic: L + Mg5Sm -> Mg41Sm5	L: Sm 0.099; Mg5Sm: Sm 0.167; Mg41Sm5: Sm 0.109	model	[1] Jia 2008	Table 2, p. 5, row 14 report
815.15	eutectic: L ⇄ Mg + Mg41Sm5	Mg: Sm 0.01; Mg41Sm5: Sm 0.109	experimental	[2] Jiang 2024 cites Rokhlin 1976	Table 4, p. 14, row 5 report
813.15	eutectic: L ⇄ Mg + Mg41Sm5	L: Sm 0.08; Mg41Sm5: Sm 0.109	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 4 report
810	eutectic: L -> Hcp + Mg41Sm5	L: Sm 0.08; Hcp: Sm 0.002; Mg41Sm5: Sm 0.109	model	[1] Jia 2008	Table 2, p. 5, row 16 report
803.15	eutectic: L ⇄ Mg + Mg41Sm5	L: Sm 0.08; Mg41Sm5: Sm 0.109	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 3 report
803	eutectic: L -> Hcp + Mg41Sm5	L: Sm 0.08; Mg41Sm5: Sm 0.109	experimental	[1] Jia 2008 cites Saccone 1989 doi	Table 2, p. 5, row 15 report
732	eutectoid: Hcp(Sm) -> Rhom(Sm) + Mgm	Hcp(Sm): Sm 0.9677; Rhom(Sm): Sm 0.9715; Mgm: Sm 0.5	model	[1] Jia 2008	Table 2, p. 5, row 20 report
731.15	eutectoid: Mg5Sm ⇄ Mg41Sm5 + Mg3Sm	Mg5Sm: Sm 0.167; Mg41Sm5: Sm 0.109; Mg3Sm: Sm 0.217	model	[2] Jiang 2024	Table 4, p. 14, row 13 report
723.15	eutectoid: Mg5Sm ⇄ Mg41Sm5 + Mg3Sm	Mg5Sm: Sm 0.167; Mg41Sm5: Sm 0.109; Mg3Sm: Sm 0.219	experimental	[2] Jiang 2024	Table 4, p. 14, row 14 report
697.15	eutectoid: Mg2Sm ⇄ Mg3Sm + MgSm	Mg2Sm: Sm 0.334; Mg3Sm: Sm 0.25; MgSm: Sm 0.491	model	[2] Jiang 2024	Table 4, p. 14, row 26 report
697.15	eutectoid: Mg2Sm ⇄ Mg3Sm + MgSm	Mg2Sm: Sm 0.324; Mg3Sm: Sm 0.25; MgSm: Sm 0.48	experimental	[2] Jiang 2024	Table 4, p. 14, row 27 report
485.15	eutectoid: β-Sm ⇄ MgSm + α-Sm	β-Sm: Sm 0.99; MgSm: Sm 0.5; α-Sm: Sm 0.999	model	[2] Jiang 2024	Table 4, p. 14, row 37 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Mg–Sm system (8)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
RMg		-20 kJ/mol-atom	298.15	experimental			[3] Hampl 2013 cites ref. 1992Cac	Table 6, p. 10, row 14 report
RMg		-19 kJ/mol-atom	298.15	experimental			[3] Hampl 2013 cites ref. 1992Cac	Table 6, p. 10, row 14 report
RMg		-3.9 kJ/mol-atom	298.15	experimental			[3] Hampl 2013 cites ref. 1967Ogr	Table 6, p. 10, row 13 report
RMg2		-23 kJ/mol-atom	298.15	experimental			[3] Hampl 2013 cites ref. 1992Cac	Table 6, p. 10, row 14 report
RMg2		-18 kJ/mol-atom	298.15	experimental			[3] Hampl 2013 cites ref. 1992Cac	Table 6, p. 10, row 14 report
SmMg	MgSm	-3.9 kJ/mol-atom	298.15	experimental	-9.611 (mp-aaaaaduk)	-10.074 (oqmd-90153)	[3] Hampl 2013 cites ref. 1967Ogr	Table 6, p. 10, row 13 report
SmMg2	Mg2Sm	-23 kJ/mol-atom	298.15	experimental	-8.453 (mp-aaaaaauj)	-9.092 (oqmd-17651)	[3] Hampl 2013 cites ref. 1992Cac	Table 6, p. 10, row 14 report
SmMg2	Mg2Sm	-18 kJ/mol-atom	298.15	experimental	-8.453 (mp-aaaaaauj)	-9.092 (oqmd-17651)	[3] Hampl 2013 cites ref. 1992Cac	Table 6, p. 10, row 14 report

Other properties

Phase transition (11)

Phase transition, Mg–Sm system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	983.15 K	983.15	congruent melting: L ⇄ Mg3Sm L: Sm 0.244; Mg3Sm: Sm 0.25	model	[2] Jiang 2024	Table 4, p. 14, row 15 report
Phase transition	995.15 K	995.15	congruent melting: L ⇄ Mg2Sm L: Sm 0.339; Mg2Sm: Sm 0.333333	model	[2] Jiang 2024	Table 4, p. 14, row 19 report
Phase transition	1003.15 K	1003.15	congruent melting: L ⇄ Mg2Sm L: Sm 0.324; Mg2Sm: Sm 0.333333	experimental	[2] Jiang 2024	Table 4, p. 14, row 20 report
Phase transition	1017 K	1017	congruent melting: L -> Mg2Sm L: Sm 0.333; Mg2Sm: Sm 0.333	model	[1] Jia 2008	Table 2, p. 5, row 9 report
Phase transition	1023 K	1023	congruent melting: L -> Mg2Sm L: Sm 0.333; Mg2Sm: Sm 0.333	experimental	[1] Jia 2008 cites Saccone 1989 doi	Table 2, p. 5, row 8 report
Phase transition	1023.15 K	1023.15	congruent melting: L ⇄ Mg2Sm L: Sm 0.333; Mg2Sm: Sm 0.333333	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 21 report
Phase transition	1043.15 K	1043.15	congruent melting: L ⇄ MgSm L: Sm 0.486; MgSm: Sm 0.5	model	[2] Jiang 2024	Table 4, p. 14, row 28 report
Phase transition	1047.15 K	1047.15	congruent melting: L ⇄ MgSm L: Sm 0.48; MgSm: Sm 0.5	experimental	[2] Jiang 2024	Table 4, p. 14, row 29 report
Phase transition	1069 K	1069	congruent melting: L -> MgSm L: Sm 0.5; MgSm: Sm 0.5	model	[1] Jia 2008	Table 2, p. 5, row 5 report
Phase transition	1073 K	1073	congruent melting: L -> MgSm L: Sm 0.5; MgSm: Sm 0.5	experimental	[1] Jia 2008 cites Saccone 1989 doi	Table 2, p. 5, row 4 report
Phase transition	1073.15 K	1073.15	congruent melting: L ⇄ MgSm L: Sm 0.5; MgSm: Sm 0.5	experimental	[2] Jiang 2024 cites Saccone 1989	Table 4, p. 14, row 30 report

Phase equilibrium (1)

Phase equilibrium, Mg–Sm system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase composition			Mgsm Mgsm: Mg 0.521, Sm 0.479	experimental	[2] Jiang 2024	Table 2, p. 5, row 31 report

Other property (1)

Other property, Mg–Sm system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Other printed: solid solubility range	5 at.% Sm	988.15		experimental	[2] Jiang 2024	p. 9 report	The maximum solid solubility range for MgSm is about 5 at.% Sm at 715 C, decreasing to 2 at.% Sm at 400 C.

Sources

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

B.R. Jia, L.B. Liu, D.Q. Yi, Z.P. Jin, J.F. Nie, Thermodynamic assessment of the Al–Mg–Sm system, Journal of Alloys and Compounds 459, 267-273 (2008). doi:10.1016/j.jallcom.2007.05.035
Ruyi Jiang, Xiaofen Duan, Dashi Li, Cuiyun He, Re-investigation of the Phase Equilibria and Thermodynamic Assessment of the Mg-Sm Binary System, J. Phase Equilib. Diffus. 45, 520-536 (2024). doi:10.1007/s11669-024-01111-0
M. Hampl, C. Blawert, M.R. Silva Campos, N. Hort, Q. Peng, K.U. Kainer et al., Thermodynamic assessment and experimental study of Mg–Gd alloys, Journal of Alloys and Compounds 581, 166-177 (2013). doi:10.1016/j.jallcom.2013.07.042

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}
}