Sb–Tb phases

11 phases (tier A 7, tier C 1, liquid 1, needs_review 2); 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 · Sb–Tb system page · Markdown · field reference

Phases of the Sb–Tb system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
RHOMBOHEDRAL_A7 phase:sb-tb: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(Tb) 0–0	2	1
BCC_A2 phase:sb-tb:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1538.23–1631.99 K, x(Tb) 0.99049–1	2	1
FCC_A1 phase:sb-tb:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
HCP_A3 phase:sb-tb:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1627 K, x(Tb) 0.98309–1	4	1
LIQUID phase:sb-tb:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 896.54–2500 K, x(Tb) 0–1	13	1
SB2TB phase:sb-tb:sb2tb	Sb2Sm · oC24 · Cmce (64)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1013.13 K, x(Tb) 0.33333–0.33333	4	1
SB3TB4_BETA phase:sb-tb:sb3tb4-beta		needs_review	stable in 1 of 1 calculated diagram(s): 1873–2043.2 K, x(Tb) 0.57143–0.57143	4	1
SB3TB4_D73 phase:sb-tb:sb3tb4-d73	Th3P4 · D7_3 · cI28 · I-43d (220)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1873 K, x(Tb) 0.57143–0.57143	0	1
SB3TB5_D88 phase:sb-tb:sb3tb5-d88	Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1923.05 K, x(Tb) 0.625–0.625	4	1
SBTB_B1 phase:sb-tb:sbtb-b1	NaCl · B1 · cF8 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2133 K, x(Tb) 0.5–0.5	4	1
SBTB_BETA phase:sb-tb:sbtb-beta		needs_review	stable in 1 of 1 calculated diagram(s): 2133–2433 K, x(Tb) 0.5–0.5	0	1

RHOMBOHEDRAL_A7 (Sb–Tb)

Id: phase:sb-tb: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(Tb) 0–0
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sb-tb:a7-rhombohedral
paper: paper:10.1016/j.calphad.2012.01.002:(Sb)
tdb: tdb:SbTb-12Gao.tdb:RHOMBOHEDRAL_A7

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

SbTb-12Gao.tdb: RHOMBOHEDRAL_A7, type code %, sha256 59da5731b61eb820…

40: PHASE RHOMBOHEDRAL_A7 % 1 1 !
41: CONST RHOMBOHEDRAL_A7 : SB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase; reports values for this phase

BCC_A2 (Sb–Tb)

Id: phase:sb-tb: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): 1538.23–1631.99 K, x(Tb) 0.99049–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sb-tb:bcc-a2
paper: paper:10.1016/j.calphad.2012.01.002:(β-Tb)
tdb: tdb:SbTb-12Gao.tdb:BCC_A2

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

SbTb-12Gao.tdb: BCC_A2, type code %B, sha256 59da5731b61eb820…

30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : SB TB% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase; reports values for this phase

FCC_A1 (Sb–Tb)

Id: phase:sb-tb:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stoichiometry: Sb 1.0000
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:sb-tb:fcc-a1
tdb: tdb:SbTb-12Gao.tdb:FCC_A1

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

SbTb-12Gao.tdb: FCC_A1, type code %A, sha256 59da5731b61eb820…

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

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase

HCP_A3 (Sb–Tb)

Id: phase:sb-tb: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): 300–1627 K, x(Tb) 0.98309–1
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sb-tb:hcp-a3
paper: paper:10.1016/j.calphad.2012.01.002:(α-Tb)
tdb: tdb:SbTb-12Gao.tdb:HCP_A3

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

SbTb-12Gao.tdb: HCP_A3, type code %A, sha256 59da5731b61eb820…

35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : SB TB% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase; reports values for this phase

LIQUID (Sb–Tb)

Id: phase:sb-tb:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 896.54–2500 K, x(Tb) 0–1
Literature: 13 values (13 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:sb-tb:liquid
paper: paper:10.1016/j.calphad.2012.01.002:L, paper:10.1016/j.calphad.2012.01.002:liquid
tdb: tdb:SbTb-12Gao.tdb:LIQUID

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

SbTb-12Gao.tdb: LIQUID, type code %, sha256 59da5731b61eb820…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : SB TB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase; reports values for this phase

SB2TB (Sb–Tb)

Id: phase:sb-tb:sb2tb; status assigned
Structure: Sb2Sm · oC24 · Cmce (64); type st:sb2sm-oc24; 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: Sb 0.6667, Tb 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1013.13 K, x(Tb) 0.33333–0.33333
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sb-tb:sb2tb
paper: paper:10.1016/j.calphad.2012.01.002:Sb2Tb
tdb: tdb:SbTb-12Gao.tdb:SB2TB

TDB models of SB2TB (1): PHASE and CONSTITUENT statements as written

SbTb-12Gao.tdb: SB2TB, type code %, sha256 59da5731b61eb820…

45: PHASE SB2TB % 2 2 1 !
46: CONST SB2TB : SB : TB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase; reports values for this phase

SB3TB4_BETA (Sb–Tb)

Id: phase:sb-tb:sb3tb4-beta; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
Candidate (sgte_mmc2): (beta-Sb3Tb4) — Hallstedt 2025 mmc2 row for SB3TB4_BETA: Sb3Tb4-beta
Stoichiometry: Sb 0.4286, Tb 0.5714
Stability: stable in 1 of 1 calculated diagram(s): 1873–2043.2 K, x(Tb) 0.57143–0.57143
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sb-tb:sb3tb4-beta
paper: paper:10.1016/j.calphad.2012.01.002:(β-Sb3Tb4)
tdb: tdb:SbTb-12Gao.tdb:SB3TB4_BETA

TDB models of SB3TB4_BETA (1): PHASE and CONSTITUENT statements as written

SbTb-12Gao.tdb: SB3TB4_BETA, type code %, sha256 59da5731b61eb820…

65: PHASE SB3TB4_BETA % 2 3 4 !
66: CONST SB3TB4_BETA : SB : TB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase; reports values for this phase

SB3TB4_D73 (Sb–Tb)

Id: phase:sb-tb:sb3tb4-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: Sb 0.4286, Tb 0.5714
Stability: stable in 1 of 1 calculated diagram(s): 300–1873 K, x(Tb) 0.57143–0.57143
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:sb-tb:sb3tb4-d73
tdb: tdb:SbTb-12Gao.tdb:SB3TB4_D73

TDB models of SB3TB4_D73 (1): PHASE and CONSTITUENT statements as written

SbTb-12Gao.tdb: SB3TB4_D73, type code %, sha256 59da5731b61eb820…

60: PHASE SB3TB4_D73 % 2 3 4 !
61: CONST SB3TB4_D73 : SB : TB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase

SB3TB5_D88 (Sb–Tb)

Id: phase:sb-tb:sb3tb5-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: Sb 0.3750, Tb 0.6250
Stability: stable in 1 of 1 calculated diagram(s): 300–1923.05 K, x(Tb) 0.625–0.625
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sb-tb:sb3tb5-d88
paper: paper:10.1016/j.calphad.2012.01.002:Sb3Tb5
tdb: tdb:SbTb-12Gao.tdb:SB3TB5_D88

TDB models of SB3TB5_D88 (1): PHASE and CONSTITUENT statements as written

SbTb-12Gao.tdb: SB3TB5_D88, type code %, sha256 59da5731b61eb820…

70: PHASE SB3TB5_D88 % 2 3 5 !
71: CONST SB3TB5_D88 : SB : TB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase; reports values for this phase

SBTB_B1 (Sb–Tb)

Id: phase:sb-tb:sbtb-b1; status assigned
Structure: NaCl · B1 · cF8 · Fm-3m (225); type st:b1-nacl-cf8; tier A: standard phase name; confidence high
Stoichiometry: Sb 0.5000, Tb 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–2133 K, x(Tb) 0.5–0.5
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:sb-tb:sbtb-b1
paper: paper:10.1016/j.calphad.2012.01.002:(α-SbTb)
tdb: tdb:SbTb-12Gao.tdb:SBTB_B1

TDB models of SBTB_B1 (1): PHASE and CONSTITUENT statements as written

SbTb-12Gao.tdb: SBTB_B1, type code %, sha256 59da5731b61eb820…

50: PHASE SBTB_B1 % 2 1 1 !
51: CONST SBTB_B1 : SB : TB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
assessment that models this phase; reports values for this phase

SBTB_BETA (Sb–Tb)

Id: phase:sb-tb:sbtb-beta; status needs_review
No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition
Candidate (dft_mp): Fm-3m (225) — on-hull MP TbSb at x(TB)=0.5000
Candidate (dft_oqmd): P-3m1 (164) — on-hull OQMD Sb1 Tb1 at x(TB)=0.5000
Candidate (sgte_mmc2): (beta-SbTb) — Hallstedt 2025 mmc2 row for SBTB_BETA: SbTb-beta
Stoichiometry: Sb 0.5000, Tb 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 2133–2433 K, x(Tb) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:sb-tb:sbtb-beta
tdb: tdb:SbTb-12Gao.tdb:SBTB_BETA

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

SbTb-12Gao.tdb: SBTB_BETA, type code %, sha256 59da5731b61eb820…

55: PHASE SBTB_BETA % 2 1 1 !
56: CONST SBTB_BETA : SB : TB : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2012.01.002 F. Gao, S.L. Wang, C.P. Wang, X.J. Liu, Thermodynamic assessments of the Sb–La and Sb–Tb systems, Calphad 37, 158-162 (2012).
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}
}