Mg–Sm phases

11 phases (tier A 8, tier C 2, liquid 1); 10 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Mg–Sm system page · Markdown · field reference

Phases of the Mg–Sm system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:mg-sm:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 852.98–2499.38 K, x(Sm) 0.65113–1	12	4
B2_BCC phase:mg-sm:bcc-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2499.38 K, x(Sm) 0.49923–1	0	1
FCC_A1 phase:mg-sm:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 3 calculated diagram(s)	0	3
HCP_A3 phase:mg-sm:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1340 K, x(Sm) 0–1	15	3
LIQUID phase:mg-sm:liquid	liquid	liquid	stable in 3 of 3 calculated diagram(s): 806.12–2500 K, x(Sm) 0–1	46	3
MG2SM_C15 phase:mg-sm:mg2sm-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1022.35 K, x(Sm) 0.33333–0.34357	19	3
MG3SM_D03 phase:mg-sm:mg3sm-d03	BiF3 · D0_3 · cF16 · Fm-3m (225)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–982.7 K, x(Sm) 0.21593–0.25	18	3
MG41SM5 phase:mg-sm:mg41sm5	Ce5Mg41 · tI92 · I4/m (87)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–839.93 K, x(Sm) 0.1087–0.1087	14	3
MG5SM phase:mg-sm:mg5sm	Cd45Sm11 · cF448 · F-43m (216)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 3 of 3 calculated diagram(s): 300–860.33 K, x(Sm) 0.16667–0.16667	13	3
MGSM_B2 phase:mg-sm:mgsm-b2	CsCl · B2 · cP2 · Pm-3m (221)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1345 K, x(Sm) 0.45449–1	28	2
RHOMB_C19 phase:mg-sm:rhomb-c19	CdCl2 · C19 · hR3 · R-3m (166)	tier A: standard phase name	stable in 3 of 3 calculated diagram(s): 300–1192.36 K, x(Sm) 0.9504–1	2	3

BCC_A2 (Mg–Sm)

Id: phase:mg-sm:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 852.98–2499.38 K, x(Sm) 0.65113–1
Literature: 12 values (12 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:mg-sm:bcc-a2
paper: paper:10.1007/s11669-024-01111-0:γ-Sm, paper:10.1016/j.jallcom.2007.05.035:Bcc(Sm)
tdb: tdb:MgSm-08Jia.tdb:BCC_A2, tdb:MgSm-10Guo.tdb:A2_BCC, tdb:MgSm-10Guo.tdb:BCC_A2, tdb:MgSm-24Jia.tdb:BCC_A2

TDB models of BCC_A2 (4): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: BCC_A2, type code %B, sha256 95e32e81e730e1ee…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : MG SM : VA : !

MgSm-10Guo.tdb: A2_BCC, type code %B, sha256 74f15429343690e9…

35: PHASE A2_BCC %B 2 1 3 !
36: CONST A2_BCC : MG SM : VA : !

MgSm-10Guo.tdb: BCC_A2, type code %B, sha256 74f15429343690e9…

30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : MG SM : VA : !

MgSm-24Jia.tdb: BCC_A2, type code %B, sha256 5a4755c28397807e…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : MG SM : VA : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase
doi:10.1016/0022-5088(89)90169-0 A. Saccone, S. Delfino, G. Borzone, R. Ferro, The samarium-magnesium system: A phase diagram, Journal of the Less Common Metals 154, 47-60 (1989).
cited as the source of values for this phase

B2_BCC (Mg–Sm)

Id: phase:mg-sm:bcc-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: MgSm-10Guo.tdb: ordered phase with disordered part A2_BCC (order/disorder model)
Caveat: partitioned order/disorder model in MgSm-10Guo.tdb also describes the disordered state
Stability: stable in 1 of 1 calculated diagram(s): 300–2499.38 K, x(Sm) 0.49923–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:mg-sm:bcc-b2
tdb: tdb:MgSm-10Guo.tdb:B2_BCC

TDB models of B2_BCC (1): PHASE and CONSTITUENT statements as written

MgSm-10Guo.tdb: B2_BCC, type code %O, sha256 74f15429343690e9…

40: PHASE B2_BCC %O 3 0.5 0.5 3 !
41: CONST B2_BCC : MG% SM : MG SM% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase

FCC_A1 (Mg–Sm)

Id: phase:mg-sm:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: not stable in 3 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:mg-sm:fcc-a1
tdb: tdb:MgSm-08Jia.tdb:FCC_A1, tdb:MgSm-10Guo.tdb:FCC_A1, tdb:MgSm-24Jia.tdb:FCC_A1

TDB models of FCC_A1 (3): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: FCC_A1, type code %A, sha256 95e32e81e730e1ee…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : MG : VA : !

MgSm-10Guo.tdb: FCC_A1, type code %A, sha256 74f15429343690e9…

25: PHASE FCC_A1 %A 2 1 1 !
26: CONST FCC_A1 : MG SM : VA : !

MgSm-24Jia.tdb: FCC_A1, type code %A, sha256 5a4755c28397807e…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : MG : VA : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase

HCP_A3 (Mg–Sm)

Id: phase:mg-sm:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–1340 K, x(Sm) 0–1
Literature: 15 values (15 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:mg-sm:hcp-a3
paper: paper:10.1007/s11669-024-01111-0:Mg, paper:10.1007/s11669-024-01111-0:β-Sm, paper:10.1016/j.jallcom.2007.05.035:Hcp, paper:10.1016/j.jallcom.2007.05.035:Hcp(Sm)
tdb: tdb:MgSm-08Jia.tdb:HCP_A3, tdb:MgSm-10Guo.tdb:HCP_A3, tdb:MgSm-24Jia.tdb:HCP_A3

TDB models of HCP_A3 (3): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: HCP_A3, type code %A, sha256 95e32e81e730e1ee…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : MG SM : VA : !

MgSm-10Guo.tdb: HCP_A3, type code %A, sha256 74f15429343690e9…

45: PHASE HCP_A3 %A 2 1 0.5 !
46: CONST HCP_A3 : MG SM : VA : !

MgSm-24Jia.tdb: HCP_A3, type code %A, sha256 5a4755c28397807e…

43: PHASE HCP_A3 %A 2 1 0.5 !
44: CONST HCP_A3 : MG SM : VA : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase
doi:10.1016/0022-5088(89)90169-0 A. Saccone, S. Delfino, G. Borzone, R. Ferro, The samarium-magnesium system: A phase diagram, Journal of the Less Common Metals 154, 47-60 (1989).
cited as the source of values for this phase

LIQUID (Mg–Sm)

Id: phase:mg-sm:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 806.12–2500 K, x(Sm) 0–1
Literature: 46 values (43 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:mg-sm:liquid
paper: paper:10.1007/s11669-024-01111-0:L, paper:10.1016/j.jallcom.2007.05.035:L
tdb: tdb:MgSm-08Jia.tdb:LIQUID, tdb:MgSm-10Guo.tdb:LIQUID, tdb:MgSm-24Jia.tdb:LIQUID

TDB models of LIQUID (3): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: LIQUID, type code %, sha256 95e32e81e730e1ee…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : MG SM : !

MgSm-10Guo.tdb: LIQUID, type code %, sha256 74f15429343690e9…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : MG SM : !

MgSm-24Jia.tdb: LIQUID, type code %, sha256 5a4755c28397807e…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : MG SM : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase
doi:10.1016/0022-5088(89)90169-0 A. Saccone, S. Delfino, G. Borzone, R. Ferro, The samarium-magnesium system: A phase diagram, Journal of the Less Common Metals 154, 47-60 (1989).
cited as the source of values for this phase

MG2SM_C15 (Mg–Sm)

Id: phase:mg-sm:mg2sm-c15; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in MgSm-24Jia.tdb also describes the disordered state
Stability: stable in 3 of 3 calculated diagram(s): 300–1022.35 K, x(Sm) 0.33333–0.34357
Literature: 19 values (16 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:mg-sm:mg2sm-c15
paper: paper:10.1007/s11669-024-01111-0:Mg2Sm, paper:10.1016/j.jallcom.2007.05.035:Mg2Sm
tdb: tdb:MgSm-08Jia.tdb:MG2SM_C15, tdb:MgSm-10Guo.tdb:MG2SM_C15, tdb:MgSm-24Jia.tdb:MG2SM_C15

TDB models of MG2SM_C15 (3): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: MG2SM_C15, type code %, sha256 95e32e81e730e1ee…

65: PHASE MG2SM_C15 % 2 2 1 !
66: CONST MG2SM_C15 : MG : SM : !

MgSm-10Guo.tdb: MG2SM_C15, type code %, sha256 74f15429343690e9…

70: PHASE MG2SM_C15 % 2 2 1 !
71: CONST MG2SM_C15 : MG : SM : !

MgSm-24Jia.tdb: MG2SM_C15, type code %, sha256 5a4755c28397807e…

68: PHASE MG2SM_C15 % 2 2 1 !
69: CONST MG2SM_C15 : MG% SM : MG SM% : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase
doi:10.1016/0022-5088(89)90169-0 A. Saccone, S. Delfino, G. Borzone, R. Ferro, The samarium-magnesium system: A phase diagram, Journal of the Less Common Metals 154, 47-60 (1989).
cited as the source of values for this phase

MG3SM_D03 (Mg–Sm)

Id: phase:mg-sm:mg3sm-d03; status assigned
Structure: BiF3 · D0_3 · cF16 · Fm-3m (225); type st:d0-3-bif3-cf16; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–982.7 K, x(Sm) 0.21593–0.25
Literature: 18 values (14 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:mg-sm:mg3sm-d03
paper: paper:10.1007/s11669-024-01111-0:Mg3Sm, paper:10.1016/j.jallcom.2007.05.035:Mg3Sm
tdb: tdb:MgSm-08Jia.tdb:MG3SM_D03, tdb:MgSm-10Guo.tdb:MG3SM_D03, tdb:MgSm-24Jia.tdb:MG3SM_D03

TDB models of MG3SM_D03 (3): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: MG3SM_D03, type code %, sha256 95e32e81e730e1ee…

60: PHASE MG3SM_D03 % 2 3 1 !
61: CONST MG3SM_D03 : MG : SM : !

MgSm-10Guo.tdb: MG3SM_D03, type code %, sha256 74f15429343690e9…

65: PHASE MG3SM_D03 % 2 3 1 !
66: CONST MG3SM_D03 : MG : SM : !

MgSm-24Jia.tdb: MG3SM_D03, type code %, sha256 5a4755c28397807e…

63: PHASE MG3SM_D03 % 2 3 1 !
64: CONST MG3SM_D03 : MG : MG SM% : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase
doi:10.1016/0022-5088(89)90169-0 A. Saccone, S. Delfino, G. Borzone, R. Ferro, The samarium-magnesium system: A phase diagram, Journal of the Less Common Metals 154, 47-60 (1989).
cited as the source of values for this phase

MG41SM5 (Mg–Sm)

Id: phase:mg-sm:mg41sm5; status assigned
Structure: Ce5Mg41 · tI92 · I4/m (87); type st:ce5mg41-ti92; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_mp, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Mg 0.8913, Sm 0.1087
Stability: stable in 3 of 3 calculated diagram(s): 300–839.93 K, x(Sm) 0.1087–0.1087
Literature: 14 values (13 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:mg-sm:mg41sm5
paper: paper:10.1007/s11669-024-01111-0:Mg41Sm5, paper:10.1016/j.jallcom.2007.05.035:Mg41Sm5
tdb: tdb:MgSm-08Jia.tdb:MG41SM5, tdb:MgSm-10Guo.tdb:MG41SM5, tdb:MgSm-24Jia.tdb:MG41SM5

TDB models of MG41SM5 (3): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: MG41SM5, type code %, sha256 95e32e81e730e1ee…

50: PHASE MG41SM5 % 2 41 5 !
51: CONST MG41SM5 : MG : SM : !

MgSm-10Guo.tdb: MG41SM5, type code %, sha256 74f15429343690e9…

55: PHASE MG41SM5 % 2 41 5 !
56: CONST MG41SM5 : MG : SM : !

MgSm-24Jia.tdb: MG41SM5, type code %, sha256 5a4755c28397807e…

53: PHASE MG41SM5 % 2 41 5 !
54: CONST MG41SM5 : MG : SM : !

Example references (4 of 4; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase
doi:10.1016/0022-5088(89)90169-0 A. Saccone, S. Delfino, G. Borzone, R. Ferro, The samarium-magnesium system: A phase diagram, Journal of the Less Common Metals 154, 47-60 (1989).
cited as the source of values for this phase

MG5SM (Mg–Sm)

Id: phase:mg-sm:mg5sm; status assigned
Structure: Cd45Sm11 · cF448 · F-43m (216); type st:cd45sm11-cf448; tier C: assessor-stated (Hallstedt 2025 crystallographic table); confidence assessor-stated
Structure source: B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, supplementary crystallographic table (mmc2) doi:10.1016/j.calphad.2025.102833
Caveat: not certain from the name or DFT alone (no_on_hull_entry_in_both, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Mg 0.8333, Sm 0.1667
Stability: stable in 3 of 3 calculated diagram(s): 300–860.33 K, x(Sm) 0.16667–0.16667
Literature: 13 values (12 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:mg-sm:mg5sm
paper: paper:10.1007/s11669-024-01111-0:Mg5Sm, paper:10.1016/j.jallcom.2007.05.035:Mg5Sm
tdb: tdb:MgSm-08Jia.tdb:MG5SM, tdb:MgSm-10Guo.tdb:MG5SM, tdb:MgSm-24Jia.tdb:MG5SM

TDB models of MG5SM (3): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: MG5SM, type code %, sha256 95e32e81e730e1ee…

55: PHASE MG5SM % 2 5 1 !
56: CONST MG5SM : MG : SM : !

MgSm-10Guo.tdb: MG5SM, type code %, sha256 74f15429343690e9…

60: PHASE MG5SM % 2 5 1 !
61: CONST MG5SM : MG : SM : !

MgSm-24Jia.tdb: MG5SM, type code %, sha256 5a4755c28397807e…

58: PHASE MG5SM % 2 5 1 !
59: CONST MG5SM : MG : SM : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase

MGSM_B2 (Mg–Sm)

Id: phase:mg-sm:mgsm-b2; status assigned
Structure: CsCl · B2 · cP2 · Pm-3m (221); type st:b2-cscl-cp2; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in MgSm-24Jia.tdb also describes the disordered state
Stability: stable in 2 of 2 calculated diagram(s): 300–1345 K, x(Sm) 0.45449–1
Literature: 28 values (27 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:mg-sm:mgsm-b2
paper: paper:10.1007/s11669-024-01111-0:MgSm, paper:10.1016/j.jallcom.2007.05.035:MgSm, paper:10.1016/j.jallcom.2007.05.035:Mgm
tdb: tdb:MgSm-08Jia.tdb:MGSM_B2, tdb:MgSm-24Jia.tdb:MGSM_B2

TDB models of MGSM_B2 (2): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: MGSM_B2, type code %, sha256 95e32e81e730e1ee…

70: PHASE MGSM_B2 % 2 1 1 !
71: CONST MGSM_B2 : MG : SM : !

MgSm-24Jia.tdb: MGSM_B2, type code %, sha256 5a4755c28397807e…

73: PHASE MGSM_B2 % 2 1 1 !
74: CONST MGSM_B2 : MG% SM : MG SM% : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(89)90169-0 A. Saccone, S. Delfino, G. Borzone, R. Ferro, The samarium-magnesium system: A phase diagram, Journal of the Less Common Metals 154, 47-60 (1989).
cited as the source of values for this phase

RHOMB_C19 (Mg–Sm)

Id: phase:mg-sm:rhomb-c19; status assigned
Structure: CdCl2 · C19 · hR3 · R-3m (166); type st:c19-cdcl2-hr3; tier A: standard phase name; confidence high
Stability: stable in 3 of 3 calculated diagram(s): 300–1192.36 K, x(Sm) 0.9504–1
Literature: 2 values (2 accepted) from 2 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:mg-sm:rhomb-c19
paper: paper:10.1007/s11669-024-01111-0:α-Sm, paper:10.1016/j.jallcom.2007.05.035:Rhom(Sm)
tdb: tdb:MgSm-08Jia.tdb:RHOMB_C19, tdb:MgSm-10Guo.tdb:RHOMB_C19, tdb:MgSm-24Jia.tdb:RHOMB_C19

TDB models of RHOMB_C19 (3): PHASE and CONSTITUENT statements as written

MgSm-08Jia.tdb: RHOMB_C19, type code %, sha256 95e32e81e730e1ee…

45: PHASE RHOMB_C19 % 1 1 !
46: CONST RHOMB_C19 : MG SM : !

MgSm-10Guo.tdb: RHOMB_C19, type code %, sha256 74f15429343690e9…

50: PHASE RHOMB_C19 % 1 1 !
51: CONST RHOMB_C19 : MG SM : !

MgSm-24Jia.tdb: RHOMB_C19, type code %, sha256 5a4755c28397807e…

48: PHASE RHOMB_C19 % 1 1 !
49: CONST RHOMB_C19 : SM : !

Example references (3 of 3; assessments first):

doi:10.1007/s11669-024-01111-0 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2007.05.035 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).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.12.006 Cuiping Guo, Zhenmin Du, Changrong Li, A thermodynamic description of the Gd–Mg–Sm system, Calphad 34, 90-97 (2010).
assessment that models this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
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 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); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). 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_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@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}
}