Gd–Sb phases

10 phases (tier A 7, tier C 1, liquid 1, needs_review 1); 9 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 · Gd–Sb system page · Markdown · field reference

Phases of the Gd–Sb system (10)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
RHOMBOHEDRAL_A7 phase:gd-sb:a7-rhombohedral	alpha-As · A7 · hR2 · R-3m (166)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–903.78 K, x(Sb) 1–1	2	1
BCC_A2 phase:gd-sb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1500.84–1586.12 K, x(Sb) 0–0.01911	4	1
FCC_A1 phase:gd-sb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
GD16SB39 phase:gd-sb:gd16sb39	Gd16Sb39 · mC124 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1053.73 K, x(Sb) 0.70909–0.70909	4	1
GD4SB3_D73 phase:gd-sb:gd4sb3-d73	Th3P4 · D7_3 · cI28 · I-43d (220)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2047.6 K, x(Sb) 0.42857–0.42857	4	1
GD5SB3_D88 phase:gd-sb:gd5sb3-d88	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1917.33 K, x(Sb) 0.375–0.375	4	1
GDSB_B1 phase:gd-sb:gdsb-b1	NaCl · B1 · cF8 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2113.15 K, x(Sb) 0.5–0.5	6	1
GDSB_BETA phase:gd-sb:gdsb-beta		needs_review	stable in 1 of 1 calculated diagram(s): 2113.15–2400.73 K, x(Sb) 0.5–0.5	4	1
HCP_A3 phase:gd-sb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1508.15 K, x(Sb) 0–0.04024	4	1
LIQUID phase:gd-sb:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 902.91–2500 K, x(Sb) 0–1	18	1

RHOMBOHEDRAL_A7 (Gd–Sb)

Id: phase:gd-sb:a7-rhombohedral; status assigned
Structure: alpha-As · A7 · hR2 · R-3m (166); type st:a7-alpha-as-hr2; tier A: standard phase name; confidence high
Stoichiometry: Sb 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–903.78 K, x(Sb) 1–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-sb:a7-rhombohedral, corpus:phase:gd-sb:rhombohedral-a7
paper: paper:10.1016/j.intermet.2007.04.003:Sb
tdb: tdb:GdSb-07Li.tdb:RHOMBOHEDRAL_A7

TDB models of RHOMBOHEDRAL_A7 (1): PHASE and CONSTITUENT statements as written

GdSb-07Li.tdb: RHOMBOHEDRAL_A7, type code %, sha256 c37a95274d9b860f…

45: PHASE RHOMBOHEDRAL_A7 % 1 1 !
46: CONST RHOMBOHEDRAL_A7 : SB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for this phase

BCC_A2 (Gd–Sb)

Id: phase:gd-sb: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 1 of 1 calculated diagram(s): 1500.84–1586.12 K, x(Sb) 0–0.01911
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-sb:bcc-a2
paper: paper:10.1016/j.intermet.2007.04.003:βGd
tdb: tdb:GdSb-07Li.tdb:BCC_A2

TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written

GdSb-07Li.tdb: BCC_A2, type code %B, sha256 c37a95274d9b860f…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : GD% SB : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for this phase

FCC_A1 (Gd–Sb)

Id: phase:gd-sb: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 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:gd-sb:fcc-a1
tdb: tdb:GdSb-07Li.tdb:FCC_A1

TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written

GdSb-07Li.tdb: FCC_A1, type code %A, sha256 c37a95274d9b860f…

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

Example references (1 of 1; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase

GD16SB39 (Gd–Sb)

Id: phase:gd-sb:gd16sb39; status assigned
Structure: Gd16Sb39 · mC124 · C2/m (12); type st:gd16sb39-mc124; 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: Gd 0.2909, Sb 0.7091
Stability: stable in 1 of 1 calculated diagram(s): 300–1053.73 K, x(Sb) 0.70909–0.70909
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-sb:gd16sb39
paper: paper:10.1016/j.intermet.2007.04.003:GdSb2
tdb: tdb:GdSb-07Li.tdb:GD16SB39

TDB models of GD16SB39 (1): PHASE and CONSTITUENT statements as written

GdSb-07Li.tdb: GD16SB39, type code %, sha256 c37a95274d9b860f…

70: PHASE GD16SB39 % 2 16 39 !
71: CONST GD16SB39 : GD : SB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for this phase

GD4SB3_D73 (Gd–Sb)

Id: phase:gd-sb:gd4sb3-d73; status assigned
Structure: Th3P4 · D7_3 · cI28 · I-43d (220); type st:d7-3-th3p4-ci28; tier A: standard phase name; confidence high
Stoichiometry: Gd 0.5714, Sb 0.4286
Stability: stable in 1 of 1 calculated diagram(s): 300–2047.6 K, x(Sb) 0.42857–0.42857
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-sb:gd4sb3-d73
paper: paper:10.1016/j.intermet.2007.04.003:Gd4Sb3
tdb: tdb:GdSb-07Li.tdb:GD4SB3_D73

TDB models of GD4SB3_D73 (1): PHASE and CONSTITUENT statements as written

GdSb-07Li.tdb: GD4SB3_D73, type code %, sha256 c37a95274d9b860f…

55: PHASE GD4SB3_D73 % 2 4 3 !
56: CONST GD4SB3_D73 : GD : SB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for this phase

GD5SB3_D88 (Gd–Sb)

Id: phase:gd-sb:gd5sb3-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
Stoichiometry: Gd 0.6250, Sb 0.3750
Stability: stable in 1 of 1 calculated diagram(s): 300–1917.33 K, x(Sb) 0.375–0.375
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-sb:gd5sb3-d88
paper: paper:10.1016/j.intermet.2007.04.003:Gd5Sb3
tdb: tdb:GdSb-07Li.tdb:GD5SB3_D88

TDB models of GD5SB3_D88 (1): PHASE and CONSTITUENT statements as written

GdSb-07Li.tdb: GD5SB3_D88, type code %, sha256 c37a95274d9b860f…

50: PHASE GD5SB3_D88 % 2 5 3 !
51: CONST GD5SB3_D88 : GD : SB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for this phase

GDSB_B1 (Gd–Sb)

Id: phase:gd-sb:gdsb-b1; status assigned
Structure: NaCl · B1 · cF8 · Fm-3m (225); type st:b1-nacl-cf8; tier A: standard phase name; confidence high
Stoichiometry: Gd 0.5000, Sb 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–2113.15 K, x(Sb) 0.5–0.5
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-sb:gdsb-b1
paper: paper:10.1016/j.intermet.2007.04.003:GdSb, paper:10.1016/j.intermet.2007.04.003:αGdSb
tdb: tdb:GdSb-07Li.tdb:GDSB_B1

TDB models of GDSB_B1 (1): PHASE and CONSTITUENT statements as written

GdSb-07Li.tdb: GDSB_B1, type code %, sha256 c37a95274d9b860f…

60: PHASE GDSB_B1 % 2 1 1 !
61: CONST GDSB_B1 : GD : SB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for this phase

GDSB_BETA (Gd–Sb)

Id: phase:gd-sb:gdsb-beta; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
Candidate (dft_mp): Fm-3m (225) — on-hull MP GdSb at x(SB)=0.5000
Candidate (dft_oqmd): Fm-3m (225) — on-hull OQMD Gd1 Sb1 at x(SB)=0.5000
Candidate (literature_printed): (GdSb) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (GdSb) — Hallstedt 2025 mmc2 row for GDSB_BETA: GdSb
Stoichiometry: Gd 0.5000, Sb 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 2113.15–2400.73 K, x(Sb) 0.5–0.5
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-sb:gdsb-beta
paper: paper:10.1016/j.intermet.2007.04.003:BGdSb, paper:10.1016/j.intermet.2007.04.003:βGdSb
tdb: tdb:GdSb-07Li.tdb:GDSB_BETA

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

GdSb-07Li.tdb: GDSB_BETA, type code %, sha256 c37a95274d9b860f…

65: PHASE GDSB_BETA % 2 1 1 !
66: CONST GDSB_BETA : GD : SB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for this phase

HCP_A3 (Gd–Sb)

Id: phase:gd-sb: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 1 of 1 calculated diagram(s): 300–1508.15 K, x(Sb) 0–0.04024
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:gd-sb:hcp-a3
paper: paper:10.1016/j.intermet.2007.04.003:αGd
tdb: tdb:GdSb-07Li.tdb:HCP_A3

TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written

GdSb-07Li.tdb: HCP_A3, type code %A, sha256 c37a95274d9b860f…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : GD% SB : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for this phase

LIQUID (Gd–Sb)

Id: phase:gd-sb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 902.91–2500 K, x(Sb) 0–1
Literature: 18 values (18 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:gd-sb:liquid
paper: paper:10.1016/j.intermet.2007.04.003:L, paper:10.1016/j.intermet.2007.04.003:liquid
tdb: tdb:GdSb-07Li.tdb:LIQUID

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

GdSb-07Li.tdb: LIQUID, type code %, sha256 c37a95274d9b860f…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : GD SB : !

Example references (2 of 2; assessments first):

doi:10.1016/j.intermet.2007.04.003 J.Q. Li, Y.X. Jian, H.L. Chen, Y.Q. Liu, Thermodynamic assessment of the Gd–Sb system, Intermetallics 15, 1332-1336 (2007).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(86)90075-5 M.N. Abdusalyamova, O.R. Burnashev, K.Y. Mironov, The alloy systems Ln-Sb, Journal of the Less Common Metals 125, 1-6 (1986).
cited as the source of values for 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}
}