Gd–Mg system

65 accepted literature values from 4 paper(s) (experimental 35, model 30); 5 calculated phase diagram(s). 15 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 (12) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	35
model	30

Accepted values by property group
Property group	Values
invariant reaction	44
formation	8
crystal structure	13

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
GdMg-03Cac-LB.tdb	G. Cacciamani, S. De Negri, A. Saccone, R. Ferro, Intermetallics, 11, 1135-51(2003). doi:10.1016/S0966-9795(03)00151-1	`2a611e16bdb52c46f2e736d405a6afb3e15b63ac10dc34496b7693d70acd3b6b`	viewer · TDB · JSON
GdMg-07Guo.tdb	C. Guo, Z. Du, C. Li, Calphad, 31, 75-88(2007). doi:10.1016/j.calphad.2006.10.004	`8626c76defe4bb2697726b9e78dfb0d91386cf3bb764ee9f47011b11e74bd74c`	viewer · TDB · JSON
GdMg-13Ham.tdb	M. Hampl, C. Blawert, M.R. Silva Campos, N. Hort, Q. Peng, K.U. Kainer, R. Schmid-Fetzer, J. Alloys Compd., 581, 166-77(2013). doi:10.1016/j.jallcom.2013.07.042	`2b5720165997ee545968b0a6de6e2908a57a57119ab5fdda7a10af07fdf0e56e`	viewer · TDB · JSON
GdMg-20Wu.tdb	X. Wu, C. Li, J. Zheng, Y. Ruan, C. Guo, Z. Du, B. Chen, Y. Wu, Calphad, 68, 101712(2020). doi:10.1016/j.calphad.2019.101712	`e4dd7ad023b834f298533d1dc757df0b1d799b3f8df6e996d75d948ca1c2e7b6`	viewer · TDB · JSON
GdMg-23Lon.tdb	Q. Long, N. Meng, F. Chen, L. Zhang, X. Tao, L. Liu, G. Xu, Y. Cui, Calphad, 82, 102583(2023). doi:10.1016/j.calphad.2023.102583	`ee25985fe0b62f39092661006efe88fb0efccc9a6bcb09286e32862faa69c84a`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
GdMg-03Cac-LB.tdb	1130.42	B2_BCC (x(Mg) 0.40378) + B2_BCC#2 (x(Mg) 0.45853) + LIQUID (x(Mg) 0.50067)
GdMg-03Cac-LB.tdb	1130.42	BCC_A2 (x(Mg) 0.40378) + B2_BCC (x(Mg) 0.45853) + LIQUID (x(Mg) 0.50067)
GdMg-03Cac-LB.tdb	1130.42	B2_BCC#2 (x(Mg) 0.40378) + B2_BCC (x(Mg) 0.45853) + LIQUID (x(Mg) 0.50067)
GdMg-03Cac-LB.tdb	1029.49	B2_BCC (x(Mg) 0.63792) + C15_LAVES (x(Mg) 0.65825) + LIQUID (x(Mg) 0.7217)
GdMg-03Cac-LB.tdb	1029.49	B2_BCC (x(Mg) 0.63792) + C15_LAVES (x(Mg) 0.65825) + LIQUID (x(Mg) 0.7217)
GdMg-03Cac-LB.tdb	976.03	HCP_A3 (x(Mg) 0.12422) + BCC_A2 (x(Mg) 0.25973) + B2_BCC (x(Mg) 0.45828)
GdMg-03Cac-LB.tdb	976.03	HCP_A3 (x(Mg) 0.12422) + B2_BCC#2 (x(Mg) 0.25973) + B2_BCC (x(Mg) 0.45828)
GdMg-03Cac-LB.tdb	976.03	HCP_A3 (x(Mg) 0.12422) + B2_BCC#2 (x(Mg) 0.25973) + B2_BCC (x(Mg) 0.45828)
GdMg-03Cac-LB.tdb	962.25	C15_LAVES (x(Mg) 0.67286) + GDMG3_D03 (x(Mg) 0.75) + LIQUID (x(Mg) 0.79848)
GdMg-03Cac-LB.tdb	962.25	C15_LAVES (x(Mg) 0.67289) + GDMG3_D03 (x(Mg) 0.75) + LIQUID (x(Mg) 0.79867)
GdMg-03Cac-LB.tdb	867.34	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.88444)
GdMg-03Cac-LB.tdb	867.34	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.88427)
GdMg-03Cac-LB.tdb	867.34	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.88444)
GdMg-03Cac-LB.tdb	836.14	GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.91378) + HCP_A3 (x(Mg) 0.95504)
GdMg-03Cac-LB.tdb	836.14	GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.91402) + HCP_A3 (x(Mg) 0.95527)
GdMg-07Guo.tdb	1141.24	B2_BCC (x(Mg) 0.3639) + B2_BCC#2 (x(Mg) 0.51008) + LIQUID (x(Mg) 0.53665)
GdMg-07Guo.tdb	1141.24	BCC_A2 (x(Mg) 0.3639) + B2_BCC (x(Mg) 0.51008) + LIQUID (x(Mg) 0.53665)
GdMg-07Guo.tdb	1141.24	B2_BCC#2 (x(Mg) 0.3639) + B2_BCC (x(Mg) 0.51008) + LIQUID (x(Mg) 0.53665)
GdMg-07Guo.tdb	1028.69	B2_BCC (x(Mg) 0.55415) + GDMG2_C15 (x(Mg) 0.66667) + LIQUID (x(Mg) 0.70826)
GdMg-07Guo.tdb	1028.69	B2_BCC (x(Mg) 0.55418) + GDMG2_C15 (x(Mg) 0.66667) + LIQUID (x(Mg) 0.70832)
GdMg-07Guo.tdb	1028.69	B2_BCC (x(Mg) 0.55415) + GDMG2_C15 (x(Mg) 0.66667) + LIQUID (x(Mg) 0.70826)
GdMg-07Guo.tdb	1028.69	B2_BCC (x(Mg) 0.55418) + GDMG2_C15 (x(Mg) 0.66667) + LIQUID (x(Mg) 0.70832)
GdMg-07Guo.tdb	992.95	GDMG2_C15 (x(Mg) 0.66667) + GDMG3_D03 (x(Mg) 0.75) + LIQUID (x(Mg) 0.7607)
GdMg-07Guo.tdb	992.95	GDMG2_C15 (x(Mg) 0.66667) + GDMG3_D03 (x(Mg) 0.75) + LIQUID (x(Mg) 0.76072)
GdMg-07Guo.tdb	992.95	GDMG2_C15 (x(Mg) 0.66667) + GDMG3_D03 (x(Mg) 0.75) + LIQUID (x(Mg) 0.76053)
GdMg-07Guo.tdb	972.91	HCP_A3 (x(Mg) 0.13781) + BCC_A2 (x(Mg) 0.2351) + B2_BCC (x(Mg) 0.5004)
GdMg-07Guo.tdb	972.91	HCP_A3 (x(Mg) 0.13781) + B2_BCC#2 (x(Mg) 0.2351) + B2_BCC (x(Mg) 0.5004)
GdMg-07Guo.tdb	972.91	HCP_A3 (x(Mg) 0.13781) + B2_BCC#2 (x(Mg) 0.2351) + B2_BCC (x(Mg) 0.5004)
GdMg-07Guo.tdb	929.39	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.84027)
GdMg-07Guo.tdb	929.39	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.83999)
GdMg-07Guo.tdb	929.39	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.84033)
GdMg-07Guo.tdb	826.52	GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.92434) + HCP_A3 (x(Mg) 0.96206)
GdMg-07Guo.tdb	826.52	GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.92453) + HCP_A3 (x(Mg) 0.96226)
GdMg-13Ham.tdb	1141.67	BCC_A2 (x(Mg) 0.38758) + GDMG_B2 (x(Mg) 0.5) + LIQUID (x(Mg) 0.52146)
GdMg-13Ham.tdb	1141.67	BCC_A2 (x(Mg) 0.38728) + GDMG_B2 (x(Mg) 0.5) + LIQUID (x(Mg) 0.52116)
GdMg-13Ham.tdb	1033.16	GDMG_B2 (x(Mg) 0.5) + GDMG2_C15 (x(Mg) 0.66667) + LIQUID (x(Mg) 0.68659)
GdMg-13Ham.tdb	1033.16	GDMG_B2 (x(Mg) 0.5) + GDMG2_C15 (x(Mg) 0.66667) + LIQUID (x(Mg) 0.68669)
GdMg-13Ham.tdb	1033.16	GDMG_B2 (x(Mg) 0.5) + GDMG2_C15 (x(Mg) 0.66667) + LIQUID (x(Mg) 0.68657)
GdMg-13Ham.tdb	957.18	HCP_A3 (x(Mg) 0.12459) + BCC_A2 (x(Mg) 0.27767) + GDMG_B2 (x(Mg) 0.5)
GdMg-13Ham.tdb	957.18	HCP_A3 (x(Mg) 0.1245) + BCC_A2 (x(Mg) 0.27756) + GDMG_B2 (x(Mg) 0.5)
GdMg-13Ham.tdb	928.25	GDMG2_C15 (x(Mg) 0.66667) + GDMG3_D03 (x(Mg) 0.75) + LIQUID (x(Mg) 0.81066)
GdMg-13Ham.tdb	928.25	GDMG2_C15 (x(Mg) 0.66667) + GDMG3_D03 (x(Mg) 0.75) + LIQUID (x(Mg) 0.81076)
GdMg-13Ham.tdb	928.25	GDMG2_C15 (x(Mg) 0.66667) + GDMG3_D03 (x(Mg) 0.75) + LIQUID (x(Mg) 0.81046)
GdMg-13Ham.tdb	881.84	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.8552)
GdMg-13Ham.tdb	881.84	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.85494)
GdMg-13Ham.tdb	881.84	GDMG3_D03 (x(Mg) 0.75) + GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.85539)
GdMg-13Ham.tdb	820.94	GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.91708) + HCP_A3 (x(Mg) 0.95413)
GdMg-13Ham.tdb	820.94	GDMG5 (x(Mg) 0.83333) + LIQUID (x(Mg) 0.91715) + HCP_A3 (x(Mg) 0.95421)
GdMg-20Wu.tdb	1508.16	D019 (x(Mg) 0) + B2_BCC (x(Mg) 0) + BCC_A2 (x(Mg) 0)
GdMg-20Wu.tdb	1141.17	B2_BCC (x(Mg) 0.38423) + B2_BCC#2 (x(Mg) 0.51188) + LIQUID (x(Mg) 0.55723)
GdMg-20Wu.tdb	1141.17	B2_BCC#2 (x(Mg) 0.38423) + B2_BCC (x(Mg) 0.51188) + LIQUID (x(Mg) 0.55723)
GdMg-20Wu.tdb	1141.17	BCC_A2 (x(Mg) 0.38423) + B2_BCC (x(Mg) 0.51188) + LIQUID (x(Mg) 0.55723)
GdMg-20Wu.tdb	1029.13	B2_BCC (x(Mg) 0.55772) + C15_LAVES (x(Mg) 0.65094) + LIQUID (x(Mg) 0.70862)
GdMg-20Wu.tdb	1029.13	B2_BCC (x(Mg) 0.55772) + C15_LAVES (x(Mg) 0.65094) + LIQUID (x(Mg) 0.70862)
GdMg-20Wu.tdb	993.02	C15_LAVES (x(Mg) 0.68325) + GDMG3_D03 (x(Mg) 0.74366) + LIQUID (x(Mg) 0.76476)
GdMg-20Wu.tdb	971.09	D019 (x(Mg) 0.14492) + B2_BCC#2 (x(Mg) 0.26021) + B2_BCC (x(Mg) 0.50234)
GdMg-20Wu.tdb	971.09	D019 (x(Mg) 0.14492) + BCC_A2 (x(Mg) 0.26021) + B2_BCC (x(Mg) 0.50234)
GdMg-20Wu.tdb	971.09	GDMG7 (x(Mg) 0.14492) + B2_BCC#2 (x(Mg) 0.26021) + B2_BCC (x(Mg) 0.50234)
GdMg-20Wu.tdb	912.37	GDMG3_D03 (x(Mg) 0.76378) + GDMG5 (x(Mg) 0.83412) + LIQUID (x(Mg) 0.86731)
GdMg-20Wu.tdb	825.54	GDMG5 (x(Mg) 0.8392) + LIQUID (x(Mg) 0.92692) + GDMG7 (x(Mg) 0.96142)
GdMg-20Wu.tdb	825.54	GDMG5 (x(Mg) 0.8392) + LIQUID (x(Mg) 0.92692) + D019 (x(Mg) 0.96142)
GdMg-23Lon.tdb	1131.83	B2_BCC (x(Mg) 0.39432) + B2_BCC#2 (x(Mg) 0.51263) + LIQUID (x(Mg) 0.56465)
GdMg-23Lon.tdb	1027.78	B2_BCC (x(Mg) 0.55762) + C15_LAVES (x(Mg) 0.65262) + LIQUID (x(Mg) 0.71142)
GdMg-23Lon.tdb	993.02	C15_LAVES (x(Mg) 0.68325) + GDMG3_D03 (x(Mg) 0.74366) + LIQUID (x(Mg) 0.76476)
GdMg-23Lon.tdb	985.21	D019 (x(Mg) 0.14086) + B2_BCC#2 (x(Mg) 0.25511) + B2_BCC (x(Mg) 0.50222)
GdMg-23Lon.tdb	912.37	GDMG3_D03 (x(Mg) 0.76378) + GDMG5 (x(Mg) 0.83412) + LIQUID (x(Mg) 0.86731)
GdMg-23Lon.tdb	825.54	GDMG5 (x(Mg) 0.8392) + LIQUID (x(Mg) 0.92692) + D019 (x(Mg) 0.96142)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull GdMg-03Cac-LB · CALPHAD hull GdMg-07Guo · CALPHAD hull GdMg-13Ham · CALPHAD hull GdMg-20Wu

Invariant reactions (literature)

Invariant reactions reported in the literature for the Gd–Mg system (44)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1142.15	L + (βGd) = GdMg	L: Gd 0.479; (βGd): Gd 0.613; GdMg: Gd 0.5	model	[1] Hampl 2013	Table 5, p. 7, row 27 report
1142.15	L + (βGd) = GdMg	L: Gd 0.491; (βGd): Gd 0.632; GdMg: Gd 0.5	model	[1] Hampl 2013	Table 5, p. 7, row 26 report
1141.15	L + (βGd) = GdMg	L: Gd 0.463; (βGd): Gd 0.635; GdMg: Gd 0.49	model	[1] Hampl 2013 cites Guo 2007 doi	Table 5, p. 7, row 28 report
1141.15	L + (βGd) = GdMg	L: Gd 0.49; (βGd): Gd 0.634; GdMg: Gd 0.5, Mg 0.5	experimental	[1] Hampl 2013 cites Manfrinetti 1986 doi	Table 5, p. 7, row 25 report
1141	liq. + bcc(Gd) -> MgGd	L: Mg 0.505; bcc(Gd): Mg 0.366; MgGd: Gd 0.5, Mg 0.5	experimental	[2] Guo 2007 cites Manfrinetti 1986 doi	Table 3, p. 8, row 2 report
1141	liq. + bcc(Gd) -> MgGd	L: Mg 0.5367; bcc(Gd): Mg 0.3649; MgGd: Mg 0.5101	model	[2] Guo 2007	Table 3, p. 8, row 1 report
1083.15	L + GdMg = GdMg2	GdMg: Gd 0.5, Mg 0.5; GdMg2: Gd 0.333333, Mg 0.666667	experimental	[1] Hampl 2013 cites Savitskii 1961	Table 5, p. 7, row 19 report
1033.15	L + GdMg = GdMg2	L: Gd 0.313; GdMg: Gd 0.5; GdMg2: Gd 0.333	model	[1] Hampl 2013	Table 5, p. 7, row 23 report
1029.15	L + GdMg = GdMg2	GdMg: Gd 0.5, Mg 0.5; GdMg2: Gd 0.333333, Mg 0.666667	experimental	[1] Hampl 2013 cites Manfrinetti 1986 doi	Table 5, p. 7, row 20 report
1029.15	L + GdMg = GdMg2	L: Gd 0.292; GdMg: Gd 0.5, Mg 0.5; GdMg2: Gd 0.333333, Mg 0.666667	model	[1] Hampl 2013 cites Guo 2007 doi	Table 5, p. 7, row 24 report
1029	liq. + MgGd -> Mg2Gd	L: Mg 0.735; MgGd: Gd 0.5, Mg 0.5; Mg2Gd: Gd 0.333333, Mg 0.666667	experimental	[2] Guo 2007 cites Manfrinetti 1986 doi	Table 3, p. 8, row 6 report
1029	liq. + MgGd -> Mg2Gd	L: Mg 0.7083; MgGd: Mg 0.5542; Mg2Gd: Gd 0.333333, Mg 0.666667	model	[2] Guo 2007	Table 3, p. 8, row 5 report
1028.15	L + GdMg = GdMg2	GdMg: Gd 0.5, Mg 0.5; GdMg2: Gd 0.333333, Mg 0.666667	experimental	[1] Hampl 2013 cites Janssen 2006 doi	Table 5, p. 7, row 21 report
1025.15	L + GdMg = GdMg2	L: Gd 0.323; GdMg: Gd 0.5; GdMg2: Gd 0.333	model	[1] Hampl 2013	Table 5, p. 7, row 22 report
1013.15	L + GdMg2 = GdMg3	L: Gd 0.2; GdMg2: Gd 0.333333, Mg 0.666667; GdMg3: Gd 0.25, Mg 0.75	experimental	[1] Hampl 2013 cites Savitskii 1961	Table 5, p. 7, row 14 report
997.15	eutectic: L = GdMg2 + GdMg3	L: Gd 0.262; GdMg2: Gd 0.333; GdMg3: Gd 0.25	model	[1] Hampl 2013	Table 5, p. 7, row 16 report
993.15	L + GdMg2 = GdMg3	L: Gd 0.239; GdMg2: Gd 0.333333, Mg 0.666667; GdMg3: Gd 0.25, Mg 0.75	model	[1] Hampl 2013 cites Guo 2007 doi	Table 5, p. 7, row 18 report
993.15	L + GdMg2 = GdMg3	GdMg2: Gd 0.333333, Mg 0.666667; GdMg3: Gd 0.25, Mg 0.75	experimental	[1] Hampl 2013 cites Manfrinetti 1986 doi	Table 5, p. 7, row 15 report
993	liq. + Mg2Gd -> Mg3Gd	L: Mg 0.7607; Mg2Gd: Gd 0.333333, Mg 0.666667; Mg3Gd: Gd 0.25, Mg 0.75	model	[2] Guo 2007	Table 3, p. 8, row 7 report
993	liq. + Mg2Gd -> Mg3Gd	L: Mg 0.802; Mg2Gd: Gd 0.333333, Mg 0.666667; Mg3Gd: Gd 0.25, Mg 0.75	experimental	[2] Guo 2007 cites Manfrinetti 1986 doi	Table 3, p. 8, row 8 report
973.15	(βGd) = (αGd) + GdMg	(βGd): Gd 0.74; GdMg: Gd 0.5, Mg 0.5	experimental	[1] Hampl 2013 cites Manfrinetti 1986 doi	Table 5, p. 7, row 29 report
973.15	(βGd) = (αGd) + GdMg	(βGd): Gd 0.765; (αGd): Gd 0.863; GdMg: Gd 0.499	model	[1] Hampl 2013 cites Guo 2007 doi	Table 5, p. 7, row 32 report
973.15	(βGd) = (αGd) + GdMg	(βGd): Gd 0.739; (αGd): Gd 0.881; GdMg: Gd 0.5	model	[1] Hampl 2013	Table 5, p. 7, row 30 report
973	bcc(Gd) -> MgGd + hcp(Gd)	bcc(Gd): Mg 0.2351; MgGd: Mg 0.5004; hcp(Gd): Mg 0.1373	model	[2] Guo 2007	Table 3, p. 8, row 3 report
973	bcc(Gd) -> MgGd + hcp(Gd)	bcc(Gd): Mg 0.26; MgGd: Gd 0.5, Mg 0.5; hcp(Gd): Mg 0.141	experimental	[2] Guo 2007 cites Manfrinetti 1986 doi	Table 3, p. 8, row 4 report
957.15	(βGd) = (αGd) + GdMg	(βGd): Gd 0.722; (αGd): Gd 0.875; GdMg: Gd 0.5	model	[1] Hampl 2013	Table 5, p. 7, row 31 report
931.15	L + GdMg3 = GdMg5	GdMg3: Gd 0.25, Mg 0.75; GdMg5: Gd 0.166667, Mg 0.833333	experimental	[1] Hampl 2013 cites Manfrinetti 1986 doi	Table 5, p. 7, row 9 report
931	liq. + Mg3Gd -> Mg5Gd	L: Mg 0.84; Mg3Gd: Gd 0.25, Mg 0.75; Mg5Gd: Gd 0.166667, Mg 0.833333	experimental	[2] Guo 2007 cites Manfrinetti 1986 doi	Table 3, p. 8, row 10 report
930.15	L + GdMg3 = GdMg5	L: Gd 0.158; GdMg3: Gd 0.25; GdMg5: Gd 0.166	model	[1] Hampl 2013	Table 5, p. 7, row 11 report
929.15	L + GdMg3 = GdMg5	L: Gd 0.16; GdMg3: Gd 0.25, Mg 0.75; GdMg5: Gd 0.166667, Mg 0.833333	model	[1] Hampl 2013 cites Guo 2007 doi	Table 5, p. 7, row 13 report
929	liq. + Mg3Gd -> Mg5Gd	L: Mg 0.8403; Mg3Gd: Gd 0.25, Mg 0.75; Mg5Gd: Gd 0.166667, Mg 0.833333	model	[2] Guo 2007	Table 3, p. 8, row 9 report
928.15	L + GdMg2 = GdMg3	L: Gd 0.189; GdMg2: Gd 0.333; GdMg3: Gd 0.25	model	[1] Hampl 2013	Table 5, p. 7, row 17 report
915.15	L + GdMg3 = GdMg5	GdMg3: Gd 0.25, Mg 0.75; GdMg5: Gd 0.166667, Mg 0.833333	experimental	[1] Hampl 2013 cites Rokhlin 1998	Table 5, p. 7, row 10 report
913.15	L + GdMg3 = GdMg5	L: Gd 0.08; GdMg3: Gd 0.25, Mg 0.75; GdMg5: Gd 0.166667, Mg 0.833333	experimental	[1] Hampl 2013 cites Savitskii 1961	Table 5, p. 7, row 8 report
882.15	L + GdMg3 = GdMg5	L: Gd 0.145; GdMg3: Gd 0.25; GdMg5: Gd 0.166	model	[1] Hampl 2013	Table 5, p. 7, row 12 report
827.15	eutectic: L = (Mg) + GdMg5	L: Gd 0.076; (Mg): Gd 0.038; GdMg5: Gd 0.166667, Mg 0.833333	model	[1] Hampl 2013 cites Guo 2007 doi	Table 5, p. 7, row 7 report
827	liq. + Mg5Gd -> hcp(Mg)	L: Mg 0.9245; Mg5Gd: Gd 0.166667, Mg 0.833333; hcp(Mg): Mg 0.9623	model	[2] Guo 2007	Table 3, p. 8, row 11 report
821.15	eutectic: L = (Mg) + GdMg5	L: Gd 0.083; (Mg): Gd 0.046; GdMg5: Gd 0.166	model	[1] Hampl 2013	Table 5, p. 7, row 6 report
821.15	eutectic: L = (Mg) + GdMg5	L: Gd 0.088; (Mg): Gd 0.04; GdMg5: Gd 0.166667, Mg 0.833333	experimental	[1] Hampl 2013 cites Manfrinetti 1986 doi	Table 5, p. 7, row 2 report
821	liq. + Mg5Gd -> hcp(Mg)	L: Mg 0.912; Mg5Gd: Gd 0.166667, Mg 0.833333; hcp(Mg): Mg 0.955	experimental	[2] Guo 2007 cites Manfrinetti 1986 doi	Table 3, p. 8, row 12 report
820.15	eutectic: L = (Mg) + GdMg5	GdMg5: Gd 0.166667, Mg 0.833333	experimental	[1] Hampl 2013	Table 5, p. 7, row 4 report
820.15	eutectic: L = (Mg) + GdMg5	L: Gd 0.075; (Mg): Gd 0.049; GdMg5: Gd 0.166	model	[1] Hampl 2013	Table 5, p. 7, row 5 report
818.15	eutectic: L = (Mg) + GdMg5	L: Gd 0.057; GdMg5: Gd 0.166667, Mg 0.833333	experimental	[1] Hampl 2013 cites Savitskii 1961	Table 5, p. 7, row 1 report
815.15	eutectic: L = (Mg) + GdMg5	L: Gd 0.095; GdMg5: Gd 0.166667, Mg 0.833333	experimental	[1] Hampl 2013 cites Rokhlin 1998	Table 5, p. 7, row 3 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, Gd–Mg system (8)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
GdMg	GdMg	-15.5 kJ/mol-atom	298.15	experimental	-10.248 (mp-aaaaadxk)	-8.947 (oqmd-20466)	[1] Hampl 2013 cites ref. 2003Cac	Table 6, p. 10, row 17 report
GdMg	GdMg	-7.3 kJ/mol-atom	298.15	experimental	-10.248 (mp-aaaaadxk)	-8.947 (oqmd-20466)	[1] Hampl 2013 cites ref. 1967Ogr	Table 6, p. 10, row 15 report
RMg		-17 kJ/mol-atom	298.15	experimental			[1] Hampl 2013 cites ref. 1972Pah	Table 6, p. 10, row 16 report
RMg		-15.5 kJ/mol-atom	298.15	experimental			[1] Hampl 2013 cites ref. 2003Cac	Table 6, p. 10, row 17 report
RMg		-7.3 kJ/mol-atom	298.15	experimental			[1] Hampl 2013 cites ref. 1967Ogr	Table 6, p. 10, row 15 report
RMg2		-19.8 kJ/mol-atom	298.15	experimental			[1] Hampl 2013 cites ref. 1972Pah	Table 6, p. 10, row 16 report
RMg3		-19 kJ/mol-atom	298.15	experimental			[1] Hampl 2013 cites ref. 1972Pah	Table 6, p. 10, row 16 report
RMg5		-17 kJ/mol-atom	298.15	experimental			[1] Hampl 2013 cites ref. 1972Pah	Table 6, p. 10, row 16 report

Other properties

Crystal structure (13)

Crystal structure, Gd–Mg system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a	0.3824 not_printed ± 5.000e-4	298.15	GdMg alloy: Mg 0.5	experimental	[3] Kevorkov 2001 cites Miller 1964	Table 2, p. 3, row 1 report
Lattice a	3.812 Å	298.15	GdMg alloy: Mg 0.5	model	[4] Gröbner 2015 cites Cao 2009 doi	Table 5, p. 10, row 4 report
Lattice a	0.3833 not_printed ± 2.000e-4	298.15	GdMg alloy: Mg 0.5	experimental	[3] Kevorkov 2001	Table 2, p. 3, row 2 report
Lattice a	0.8575 not_printed ± 1.000e-4	298.15	GdMg2 alloy: Mg 0.666667	experimental	[3] Kevorkov 2001 cites Manfrinetti 1986 doi	Table 2, p. 3, row 4 report
Lattice a	8.55 Å	298.15	GdMg2 alloy: Mg 0.666667	model	[4] Gröbner 2015 cites Cao 2009 doi	Table 5, p. 10, row 3 report
Lattice a	0.864 not_printed ± 1.000e-4	298.15	GdMg2 alloy: Mg 0.666667	experimental	[3] Kevorkov 2001	Table 2, p. 3, row 5 report
Lattice a	6.857 Å	298.15	GdMg3 alloy: Mg 0.75	model	[4] Gröbner 2015 cites Gao 2007 doi	Table 4, p. 9, row 2 report
Lattice a	7.31 Å	298.15	GdMg3 alloy: Mg 0.75	model	[4] Gröbner 2015 cites Cao 2009 doi	Table 5, p. 10, row 2 report
Lattice a	0.7326 not_printed	298.15	GdMg3 alloy: Mg 0.75	experimental	[3] Kevorkov 2001 cites Will 1978	Table 2, p. 3, row 7 report
Lattice a	0.7315 not_printed ± 5.000e-4	298.15	GdMg3 alloy: Mg 0.75	experimental	[3] Kevorkov 2001	Table 2, p. 3, row 8 report
Lattice a	2.2344 not_printed ± 8.000e-4	298.15	GdMg5 alloy: Mg 0.833333	experimental	[3] Kevorkov 2001 cites Fornasini 1986 doi	Table 2, p. 3, row 10 report
Lattice a	22.344 Å	298.15	GdMg5 alloy: Mg 0.833333	model	[4] Gröbner 2015 cites Cao 2009 doi	Table 5, p. 10, row 1 report
Lattice a	22.344 Å	298.15	GdMg5 alloy: Mg 0.833333	model	[4] Gröbner 2015 cites Massalski 1990	Table 4, p. 9, row 1 report

Sources

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

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
Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Y system, Calphad 31, 75-88 (2007). doi:10.1016/j.calphad.2006.10.004
D. G. Kevorkov, J. Gröbner, R. Schmid-Fetzer, V. V. Pavlyuk, G. S. Dmytriv, O. I. Bodak, The ternary Gd-Li-Mg system: Phase diagram study and computational evaluation, JPE 22, 34-42 (2001). doi:10.1361/105497101770339274
Joachim Gröbner, Artem Kozlov, Xi-Ya Fang, Suming Zhu, Jian-Feng Nie, Mark A. Gibson et al., Phase equilibria and transformations in ternary Mg–Gd–Zn alloys, Acta Materialia 90, 400-416 (2015). doi:10.1016/j.actamat.2015.02.044

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}
}