Nd–Sn phases

20 phases (tier A 9, tier B 3, tier C 2, liquid 1, needs_review 5); 17 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 · Nd–Sn system page · Markdown · field reference

Phases of the Nd–Sn system (20)
Phase	Structure	Basis	Stability (calculated)	TDB models
DIAMOND_A4 phase:nd-sn:a4-diamond	C (diamond) · A4 · cF8 · Fd-3m (227)	tier A: standard phase name	not stable in 2 calculated diagram(s)	2
BCT_A5 phase:nd-sn:a5-bct	beta-Sn · A5 · tI4 · I4_1/amd (141)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–505.07 K, x(Sn) 1–1	2
BCC_A2 phase:nd-sn:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 1072.78–1289 K, x(Sn) 0–0.05571	2
DHCP phase:nd-sn:dhcp-a3	alpha-La · A3' · hP4 · P6_3/mmc (194)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1138.25 K, x(Sn) 0–0.01922	2
FCC_A1 phase:nd-sn:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 2 calculated diagram(s)	2
HCP_A3 phase:nd-sn:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 2 calculated diagram(s)	2
LIQUID phase:nd-sn:liquid	liquid	liquid	stable in 2 of 2 calculated diagram(s): 505.03–2500 K, x(Sn) 0–1	2
ND11SN10 phase:nd-sn:nd11sn10	Ge10Ho11 · tI84 · I4/mmm (139)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1670.19 K, x(Sn) 0.47619–0.47619	2
ND2SN phase:nd-sn:nd2sn		needs_review	stable in 1 of 1 calculated diagram(s): 300–1405.2 K, x(Sn) 0.33333–0.33333	1
ND2SN3 phase:nd-sn:nd2sn3	Nd2Sn3 · aP20 · P-1 (2)	tier B: DFT-supported (unique MP + OQMD match)	stable in 1 of 1 calculated diagram(s): 300–1420.63 K, x(Sn) 0.6–0.6	1
ND2SN5 phase:nd-sn:nd2sn5	Ce2Sn5 · oC28 · Cmmm (65)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 2 of 2 calculated diagram(s): 300–1414.84 K, x(Sn) 0.71429–0.71429	2
ND3SN_L12 phase:nd-sn:nd3sn-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1383.88–1436.07 K, x(Sn) 0.25–0.25	1
ND3SN5 phase:nd-sn:nd3sn5		needs_review	stable in 2 of 2 calculated diagram(s): 300–1425.24 K, x(Sn) 0.625–0.625	2
ND3SN7 phase:nd-sn:nd3sn7	Ce3Sn7 · oC20 · Cmmm (65)	tier B: DFT-supported (unique MP + OQMD match)	stable in 2 of 2 calculated diagram(s): 300–1433.4 K, x(Sn) 0.7–0.7	2
ND4SN5 phase:nd-sn:nd4sn5		needs_review	stable in 1 of 1 calculated diagram(s): 300–1439.89 K, x(Sn) 0.55556–0.55556	1
ND5SN3_D88 phase:nd-sn:nd5sn3-d88	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1933.21 K, x(Sn) 0.375–0.375	2
ND5SN4 phase:nd-sn:nd5sn4		needs_review	stable in 2 of 2 calculated diagram(s): 300–1830.78 K, x(Sn) 0.44444–0.44444	2
NDSN phase:nd-sn:ndsn		needs_review	stable in 2 of 2 calculated diagram(s): 300–1530.46 K, x(Sn) 0.5–0.5	2
NDSN2 phase:nd-sn:ndsn2	Ga2Zr · oC12 · Cmmm (65)	tier B: DFT-supported (unique MP + OQMD match)	stable in 2 of 2 calculated diagram(s): 300–1453.29 K, x(Sn) 0.66667–0.66667	2
NDSN3_L12 phase:nd-sn:ndsn3-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 2 of 2 calculated diagram(s): 300–1413.57 K, x(Sn) 0.75–0.75	2

DIAMOND_A4 (Nd–Sn)

Id: phase:nd-sn:a4-diamond; status assigned
Structure: C (diamond) · A4 · cF8 · Fd-3m (227); type st:a4-c-diamond-cf8; tier A: standard phase name; confidence high
Stoichiometry: Sn 1.0000
Stability: not stable in 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:a4-diamond
tdb: tdb:NdSn-18Wan.tdb:DIAMOND_A4, tdb:NdSn-24He.tdb:DIAMOND_A4

TDB models of DIAMOND_A4 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: DIAMOND_A4, type code %, sha256 4721c8d300ba1e9b…

46: PHASE DIAMOND_A4 % 1 1 !
47: CONST DIAMOND_A4 : SN : !

NdSn-24He.tdb: DIAMOND_A4, type code %, sha256 deb38f0dc9dbf245…

56: PHASE DIAMOND_A4 % 1 1 !
57: CONST DIAMOND_A4 : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

BCT_A5 (Nd–Sn)

Id: phase:nd-sn:a5-bct; status assigned
Structure: beta-Sn · A5 · tI4 · I4_1/amd (141); type st:a5-beta-sn-ti4; tier A: standard phase name; confidence high
Stoichiometry: Sn 1.0000
Stability: stable in 2 of 2 calculated diagram(s): 300–505.07 K, x(Sn) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:a5-bct
tdb: tdb:NdSn-18Wan.tdb:BCT_A5, tdb:NdSn-24He.tdb:BCT_A5

TDB models of BCT_A5 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: BCT_A5, type code %, sha256 4721c8d300ba1e9b…

51: PHASE BCT_A5 % 1 1 !
52: CONST BCT_A5 : SN : !

NdSn-24He.tdb: BCT_A5, type code %, sha256 deb38f0dc9dbf245…

61: PHASE BCT_A5 % 1 1 !
62: CONST BCT_A5 : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

BCC_A2 (Nd–Sn)

Id: phase:nd-sn: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 2 of 2 calculated diagram(s): 1072.78–1289 K, x(Sn) 0–0.05571
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:bcc-a2
tdb: tdb:NdSn-18Wan.tdb:BCC_A2, tdb:NdSn-24He.tdb:BCC_A2

TDB models of BCC_A2 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: BCC_A2, type code %B, sha256 4721c8d300ba1e9b…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : ND% SN : VA : !

NdSn-24He.tdb: BCC_A2, type code %B, sha256 deb38f0dc9dbf245…

41: PHASE BCC_A2 %B 2 1 3 !
42: CONST BCC_A2 : ND% SN : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

DHCP (Nd–Sn)

Id: phase:nd-sn:dhcp-a3; status assigned
Structure: alpha-La · A3' · hP4 · P6_3/mmc (194); type st:a3-alpha-la-hp4; tier A: standard phase name; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 300–1138.25 K, x(Sn) 0–0.01922
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:dhcp-a3
tdb: tdb:NdSn-18Wan.tdb:DHCP, tdb:NdSn-24He.tdb:DHCP

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

NdSn-18Wan.tdb: DHCP, type code %, sha256 4721c8d300ba1e9b…

41: PHASE DHCP % 1 1 !
42: CONST DHCP : ND% SN : !

NdSn-24He.tdb: DHCP, type code %, sha256 deb38f0dc9dbf245…

51: PHASE DHCP % 1 1 !
52: CONST DHCP : ND% SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

FCC_A1 (Nd–Sn)

Id: phase:nd-sn: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 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:fcc-a1
tdb: tdb:NdSn-18Wan.tdb:FCC_A1, tdb:NdSn-24He.tdb:FCC_A1

TDB models of FCC_A1 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: FCC_A1, type code %A, sha256 4721c8d300ba1e9b…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : ND SN : VA : !

NdSn-24He.tdb: FCC_A1, type code %A, sha256 deb38f0dc9dbf245…

36: PHASE FCC_A1 %A 2 1 1 !
37: CONST FCC_A1 : ND SN : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

HCP_A3 (Nd–Sn)

Id: phase:nd-sn: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: not stable in 2 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:hcp-a3
tdb: tdb:NdSn-18Wan.tdb:HCP_A3, tdb:NdSn-24He.tdb:HCP_A3

TDB models of HCP_A3 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: HCP_A3, type code %A, sha256 4721c8d300ba1e9b…

36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : ND% SN : VA : !

NdSn-24He.tdb: HCP_A3, type code %A, sha256 deb38f0dc9dbf245…

46: PHASE HCP_A3 %A 2 1 0.5 !
47: CONST HCP_A3 : ND% SN : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

LIQUID (Nd–Sn)

Id: phase:nd-sn:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 2 of 2 calculated diagram(s): 505.03–2500 K, x(Sn) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:liquid
tdb: tdb:NdSn-18Wan.tdb:LIQUID, tdb:NdSn-24He.tdb:LIQUID

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

NdSn-18Wan.tdb: LIQUID, type code %, sha256 4721c8d300ba1e9b…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : ND SN : !

NdSn-24He.tdb: LIQUID, type code %, sha256 deb38f0dc9dbf245…

31: PHASE LIQUID:L % 1 1 !
32: CONST LIQUID:L : ND SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND11SN10 (Nd–Sn)

Id: phase:nd-sn:nd11sn10; status assigned
Structure: Ge10Ho11 · tI84 · I4/mmm (139); type st:ge10ho11-ti84; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Nd 0.5238, Sn 0.4762
Stability: stable in 2 of 2 calculated diagram(s): 300–1670.19 K, x(Sn) 0.47619–0.47619
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:nd11sn10
tdb: tdb:NdSn-18Wan.tdb:ND11SN10, tdb:NdSn-24He.tdb:ND11SN10

TDB models of ND11SN10 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: ND11SN10, type code %, sha256 4721c8d300ba1e9b…

66: PHASE ND11SN10 % 2 11 10 !
67: CONST ND11SN10 : ND : SN : !

NdSn-24He.tdb: ND11SN10, type code %, sha256 deb38f0dc9dbf245…

86: PHASE ND11SN10 % 2 11 10 !
87: CONST ND11SN10 : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND2SN (Nd–Sn)

Id: phase:nd-sn:nd2sn; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (Nd2Sn) — Hallstedt 2025 mmc2 row for ND2SN: Nd2Sn
Stoichiometry: Nd 0.6667, Sn 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1405.2 K, x(Sn) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:nd-sn:nd2sn
tdb: tdb:NdSn-24He.tdb:ND2SN

TDB models of ND2SN (1): PHASE and CONSTITUENT statements as written

NdSn-24He.tdb: ND2SN, type code %, sha256 deb38f0dc9dbf245…

71: PHASE ND2SN % 2 2 1 !
72: CONST ND2SN : ND : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND2SN3 (Nd–Sn)

Id: phase:nd-sn:nd2sn3; status assigned
Structure: Nd2Sn3 · aP20 · P-1 (2); type st:nd2sn3-ap20; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Nd 0.4000, Sn 0.6000
Stability: stable in 1 of 1 calculated diagram(s): 300–1420.63 K, x(Sn) 0.6–0.6
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:nd-sn:nd2sn3
mp: mp:mp-aaaabsva
oqmd: oqmd:oqmd-25721
tdb: tdb:NdSn-24He.tdb:ND2SN3

TDB models of ND2SN3 (1): PHASE and CONSTITUENT statements as written

NdSn-24He.tdb: ND2SN3, type code %, sha256 deb38f0dc9dbf245…

101: PHASE ND2SN3 % 2 2 3 !
102: CONST ND2SN3 : ND : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND2SN5 (Nd–Sn)

Id: phase:nd-sn:nd2sn5; status assigned
Structure: Ce2Sn5 · oC28 · Cmmm (65); type st:ce2sn5-oc28; 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: Nd 0.2857, Sn 0.7143
Stability: stable in 2 of 2 calculated diagram(s): 300–1414.84 K, x(Sn) 0.71429–0.71429
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:nd2sn5
tdb: tdb:NdSn-18Wan.tdb:ND2SN5, tdb:NdSn-24He.tdb:ND2SN5

TDB models of ND2SN5 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: ND2SN5, type code %, sha256 4721c8d300ba1e9b…

91: PHASE ND2SN5 % 2 2 5 !
92: CONST ND2SN5 : ND : SN : !

NdSn-24He.tdb: ND2SN5, type code %, sha256 deb38f0dc9dbf245…

121: PHASE ND2SN5 % 2 2 5 !
122: CONST ND2SN5 : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND3SN_L12 (Nd–Sn)

Id: phase:nd-sn:nd3sn-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Stoichiometry: Nd 0.7500, Sn 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 1383.88–1436.07 K, x(Sn) 0.25–0.25
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:nd-sn:nd3sn-l12
tdb: tdb:NdSn-24He.tdb:ND3SN_L12

TDB models of ND3SN_L12 (1): PHASE and CONSTITUENT statements as written

NdSn-24He.tdb: ND3SN_L12, type code %, sha256 deb38f0dc9dbf245…

66: PHASE ND3SN_L12 % 2 3 1 !
67: CONST ND3SN_L12 : ND : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND3SN5 (Nd–Sn)

Id: phase:nd-sn:nd3sn5; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (Nd3Sn5) — Hallstedt 2025 mmc2 row for ND3SN5: Nd3Sn5
Stoichiometry: Nd 0.3750, Sn 0.6250
Stability: stable in 2 of 2 calculated diagram(s): 300–1425.24 K, x(Sn) 0.625–0.625
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:nd3sn5
tdb: tdb:NdSn-18Wan.tdb:ND3SN5, tdb:NdSn-24He.tdb:ND3SN5

TDB models of ND3SN5 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: ND3SN5, type code %, sha256 4721c8d300ba1e9b…

76: PHASE ND3SN5 % 2 3 5 !
77: CONST ND3SN5 : ND : SN : !

NdSn-24He.tdb: ND3SN5, type code %, sha256 deb38f0dc9dbf245…

106: PHASE ND3SN5 % 2 3 5 !
107: CONST ND3SN5 : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND3SN7 (Nd–Sn)

Id: phase:nd-sn:nd3sn7; status assigned
Structure: Ce3Sn7 · oC20 · Cmmm (65); type st:ce3sn7-oc20; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Nd 0.3000, Sn 0.7000
Stability: stable in 2 of 2 calculated diagram(s): 300–1433.4 K, x(Sn) 0.7–0.7
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:nd-sn:nd3sn7
mp: mp:mp-aaacqqmw
oqmd: oqmd:oqmd-1453997
tdb: tdb:NdSn-18Wan.tdb:ND3SN7, tdb:NdSn-24He.tdb:ND3SN7

TDB models of ND3SN7 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: ND3SN7, type code %, sha256 4721c8d300ba1e9b…

86: PHASE ND3SN7 % 2 3 7 !
87: CONST ND3SN7 : ND : SN : !

NdSn-24He.tdb: ND3SN7, type code %, sha256 deb38f0dc9dbf245…

116: PHASE ND3SN7 % 2 3 7 !
117: CONST ND3SN7 : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND4SN5 (Nd–Sn)

Id: phase:nd-sn:nd4sn5; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (Nd4Sn5) — Hallstedt 2025 mmc2 row for ND4SN5: Nd4Sn5
Stoichiometry: Nd 0.4444, Sn 0.5556
Stability: stable in 1 of 1 calculated diagram(s): 300–1439.89 K, x(Sn) 0.55556–0.55556
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:nd-sn:nd4sn5
tdb: tdb:NdSn-24He.tdb:ND4SN5

TDB models of ND4SN5 (1): PHASE and CONSTITUENT statements as written

NdSn-24He.tdb: ND4SN5, type code %, sha256 deb38f0dc9dbf245…

96: PHASE ND4SN5 % 2 4 5 !
97: CONST ND4SN5 : ND : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND5SN3_D88 (Nd–Sn)

Id: phase:nd-sn:nd5sn3-d88; status assigned
Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type st:d8-8-mn5si3-hp16; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaabdbet and oqmd-647405, space group 193
Stoichiometry: Nd 0.6250, Sn 0.3750
Stability: stable in 2 of 2 calculated diagram(s): 300–1933.21 K, x(Sn) 0.375–0.375
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:nd-sn:nd5sn3-d88
mp: mp:mp-aaabdbet
oqmd: oqmd:oqmd-647405
tdb: tdb:NdSn-18Wan.tdb:ND5SN3_D88, tdb:NdSn-24He.tdb:ND5SN3_D88

TDB models of ND5SN3_D88 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: ND5SN3_D88, type code %, sha256 4721c8d300ba1e9b…

56: PHASE ND5SN3_D88 % 2 5 3 !
57: CONST ND5SN3_D88 : ND : SN : !

NdSn-24He.tdb: ND5SN3_D88, type code %, sha256 deb38f0dc9dbf245…

76: PHASE ND5SN3_D88 % 2 5 3 !
77: CONST ND5SN3_D88 : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

ND5SN4 (Nd–Sn)

Id: phase:nd-sn:nd5sn4; status needs_review
No structure assigned. Why: dft_space_group_62_matches_2_structure_types; no_structure_token
Candidate (dft_mp): Pnma (62) — on-hull MP Nd5Sn4 at x(SN)=0.4444
Candidate (dft_oqmd): Pnma (62) — on-hull OQMD Nd5 Sn4 at x(SN)=0.4444
Candidate (dft_space_group_and_stoichiometry): Gd5Si4 · oP36 · Pnma (62) — space group 62 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): Ge4Sm5 · oP36 · Pnma (62) — space group 62 and stoichiometry match
Candidate (tdb_comment): Ge4Sm5 · oP36 · Pnma — NdSn-18Wan.tdb: 'Prototype Ge4Sm5 (oP36, Pnma)'
Candidate (tdb_comment): Ge4Sm5 · oP36 · Pnma — NdSn-24He.tdb: 'Prototype Ge4Sm5 (oP36, Pnma)'
Stoichiometry: Nd 0.5556, Sn 0.4444
Stability: stable in 2 of 2 calculated diagram(s): 300–1830.78 K, x(Sn) 0.44444–0.44444
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:nd5sn4
tdb: tdb:NdSn-18Wan.tdb:ND5SN4, tdb:NdSn-24He.tdb:ND5SN4

TDB models of ND5SN4 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: ND5SN4, type code %, sha256 4721c8d300ba1e9b…

61: PHASE ND5SN4 % 2 5 4 !
62: CONST ND5SN4 : ND : SN : !

NdSn-24He.tdb: ND5SN4, type code %, sha256 deb38f0dc9dbf245…

81: PHASE ND5SN4 % 2 5 4 !
82: CONST ND5SN4 : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

NDSN (Nd–Sn)

Id: phase:nd-sn:ndsn; status needs_review
No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_row_incomplete
Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Nd1 Sn1 at x(SN)=0.5000
Candidate (sgte_mmc2): (NdSn) — Hallstedt 2025 mmc2 row for NDSN: NdSn
Stoichiometry: Nd 0.5000, Sn 0.5000
Stability: stable in 2 of 2 calculated diagram(s): 300–1530.46 K, x(Sn) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:ndsn
tdb: tdb:NdSn-18Wan.tdb:NDSN, tdb:NdSn-24He.tdb:NDSN

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

NdSn-18Wan.tdb: NDSN, type code %, sha256 4721c8d300ba1e9b…

71: PHASE NDSN % 2 1 1 !
72: CONST NDSN : ND : SN : !

NdSn-24He.tdb: NDSN, type code %, sha256 deb38f0dc9dbf245…

91: PHASE NDSN % 2 1 1 !
92: CONST NDSN : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

NDSN2 (Nd–Sn)

Id: phase:nd-sn:ndsn2; status assigned
Structure: Ga2Zr · oC12 · Cmmm (65); type st:ga2zr-oc12; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Nd 0.3333, Sn 0.6667
Stability: stable in 2 of 2 calculated diagram(s): 300–1453.29 K, x(Sn) 0.66667–0.66667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:nd-sn:ndsn2
mp: mp:mp-aaaaasun
oqmd: oqmd:oqmd-647404
tdb: tdb:NdSn-18Wan.tdb:NDSN2, tdb:NdSn-24He.tdb:NDSN2

TDB models of NDSN2 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: NDSN2, type code %, sha256 4721c8d300ba1e9b…

81: PHASE NDSN2 % 2 1 2 !
82: CONST NDSN2 : ND : SN : !

NdSn-24He.tdb: NDSN2, type code %, sha256 deb38f0dc9dbf245…

111: PHASE NDSN2 % 2 1 2 !
112: CONST NDSN2 : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
assessment that models this phase

NDSN3_L12 (Nd–Sn)

Id: phase:nd-sn:ndsn3-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Stoichiometry: Nd 0.2500, Sn 0.7500
Stability: stable in 2 of 2 calculated diagram(s): 300–1413.57 K, x(Sn) 0.75–0.75
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:nd-sn:ndsn3-l12
tdb: tdb:NdSn-18Wan.tdb:NDSN3_L12, tdb:NdSn-24He.tdb:NDSN3_L12

TDB models of NDSN3_L12 (2): PHASE and CONSTITUENT statements as written

NdSn-18Wan.tdb: NDSN3_L12, type code %, sha256 4721c8d300ba1e9b…

96: PHASE NDSN3_L12 % 2 1 3 !
97: CONST NDSN3_L12 : ND : SN : !

NdSn-24He.tdb: NDSN3_L12, type code %, sha256 deb38f0dc9dbf245…

126: PHASE NDSN3_L12 % 2 1 3 !
127: CONST NDSN3_L12 : ND : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2017.12.009 S.L. Wang, X.H. Su, S.S. Li, C.Y. Fu, Y.H. Guo, Y.X. Huang, D.X. Xiang, C.P. Wang, X.J. Liu, Calphad, 60, 214-21(2018).
assessment that models this phase
doi:10.1016/j.calphad.2024.102757 C. He, Y. Huang, S. Liu, J. Zen, R. Jiang, Calphad, 87, 102757(2024).
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}
}