In–Sc phases

11 phases (tier A 8, tier B 1, liquid 1, needs_review 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 · In–Sc system page · Markdown · field reference

Phases of the In–Sc system (11)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
TETRAGONAL_A6 phase:in-sc:a6-tetragonal	In · A6 · tI2 · I4/mmm (139)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–429.75 K, x(Sc) 0–0	0	1
BCC_A2 phase:in-sc:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1373.91–2169 K, x(Sc) 0.79773–1	0	1
FCC_A1 phase:in-sc: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:in-sc:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1678.91 K, x(Sc) 0.86315–1	0	1
IN2SC phase:in-sc:in2sc	Ga2Zr · oC12 · Cmmm (65)	tier B: DFT-supported (unique MP + OQMD match)	stable in 1 of 1 calculated diagram(s): 300–1245.87 K, x(Sc) 0.33333–0.33333	1	1
IN3SC_L12 phase:in-sc:in3sc-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1213.85 K, x(Sc) 0.25–0.25	0	1
IN4SC5_B2 phase:in-sc:in4sc5-b2		needs_review	stable in 1 of 1 calculated diagram(s): 300–1549.77 K, x(Sc) 0.55556–0.55556	0	1
INSC_L10 phase:in-sc:insc-l10	AuCu · L1_0 · tP4 · P4/mmm (123)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1397.3 K, x(Sc) 0.5–0.5	0	1
INSC2_B82 phase:in-sc:insc2-b82	InNi2 · B8_2 · hP6 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1681.16 K, x(Sc) 0.66667–0.66667	0	1
INSC3_D019 phase:in-sc:insc3-d019	Ni3Sn · D0_19 · hP8 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1622.23 K, x(Sc) 0.75–0.75	0	1
LIQUID phase:in-sc:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 429.75–2500 K, x(Sc) 0–1	0	1

TETRAGONAL_A6 (In–Sc)

Id: phase:in-sc:a6-tetragonal; status assigned
Structure: In · A6 · tI2 · I4/mmm (139); type st:a6-in-ti2; tier A: standard phase name; confidence high
Stoichiometry: In 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–429.75 K, x(Sc) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sc:a6-tetragonal
tdb: tdb:InSc-18Hu.tdb:TETRAGONAL_A6

TDB models of TETRAGONAL_A6 (1): PHASE and CONSTITUENT statements as written

InSc-18Hu.tdb: TETRAGONAL_A6, type code %, sha256 f1ee140f2427707f…

42: PHASE TETRAGONAL_A6 % 1 1 !
43: CONST TETRAGONAL_A6 : IN : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

BCC_A2 (In–Sc)

Id: phase:in-sc: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): 1373.91–2169 K, x(Sc) 0.79773–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sc:bcc-a2
tdb: tdb:InSc-18Hu.tdb:BCC_A2

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

InSc-18Hu.tdb: BCC_A2, type code %B, sha256 f1ee140f2427707f…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : IN SC% : VA : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

FCC_A1 (In–Sc)

Id: phase:in-sc: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:in-sc:fcc-a1
tdb: tdb:InSc-18Hu.tdb:FCC_A1

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

InSc-18Hu.tdb: FCC_A1, type code %A, sha256 f1ee140f2427707f…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : IN SC : VA : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

HCP_A3 (In–Sc)

Id: phase:in-sc: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): 300–1678.91 K, x(Sc) 0.86315–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sc:hcp-a3
tdb: tdb:InSc-18Hu.tdb:HCP_A3

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

InSc-18Hu.tdb: HCP_A3, type code %A, sha256 f1ee140f2427707f…

37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : IN SC% : VA : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

IN2SC (In–Sc)

Id: phase:in-sc:in2sc; status assigned
Structure: Ga2Zr · oC12 · Cmmm (65); type st:ga2zr-oc12; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: In 0.6667, Sc 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1245.87 K, x(Sc) 0.33333–0.33333
Literature: 1 values (1 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:in-sc:in2sc
mp: mp:mp-aaacqqky
oqmd: oqmd:oqmd-1368785
paper: paper:10.2298/jmmb171121004h:In2Sc
tdb: tdb:InSc-18Hu.tdb:IN2SC

TDB models of IN2SC (1): PHASE and CONSTITUENT statements as written

InSc-18Hu.tdb: IN2SC, type code %, sha256 f1ee140f2427707f…

52: PHASE IN2SC % 2 2 1 !
53: CONST IN2SC : IN : SC : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase; reports values for this phase

IN3SC_L12 (In–Sc)

Id: phase:in-sc:in3sc-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaabejz and oqmd-11158, space group 221
Stoichiometry: In 0.7500, Sc 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 300–1213.85 K, x(Sc) 0.25–0.25
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:in-sc:in3sc-l12
mp: mp:mp-aaaabejz
oqmd: oqmd:oqmd-11158
tdb: tdb:InSc-18Hu.tdb:IN3SC_L12

TDB models of IN3SC_L12 (1): PHASE and CONSTITUENT statements as written

InSc-18Hu.tdb: IN3SC_L12, type code %, sha256 f1ee140f2427707f…

47: PHASE IN3SC_L12 % 2 3 1 !
48: CONST IN3SC_L12 : IN : SC : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

IN4SC5_B2 (In–Sc)

Id: phase:in-sc:in4sc5-b2; status needs_review
No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_B2; stoichiometry_contradicts_B2:InSc-18Hu.tdb
Candidate (name_token): CsCl · B2 · cP2 · Pm-3m (221) — Strukturbericht/word 'B2' in the TDB name
Candidate (sgte_mmc2): CsCl · B2 · cP2 · Pm-3m (221) — Hallstedt 2025 mmc2 row for IN4SC5_B2: In4Sc5
Candidate (tdb_comment): CsCl · cP2 · Pm-3m — InSc-18Hu.tdb: 'Prototype CsCl (cP2, Pm-3m)'
Stoichiometry: In 0.4444, Sc 0.5556
Stability: stable in 1 of 1 calculated diagram(s): 300–1549.77 K, x(Sc) 0.55556–0.55556
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sc:in4sc5-b2
tdb: tdb:InSc-18Hu.tdb:IN4SC5_B2

TDB models of IN4SC5_B2 (1): PHASE and CONSTITUENT statements as written

InSc-18Hu.tdb: IN4SC5_B2, type code %, sha256 f1ee140f2427707f…

62: PHASE IN4SC5_B2 % 2 4 5 !
63: CONST IN4SC5_B2 : IN : SC : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

INSC_L10 (In–Sc)

Id: phase:in-sc:insc-l10; status assigned
Structure: AuCu · L1_0 · tP4 · P4/mmm (123); type st:l1-0-aucu-tp4; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaacqrqy and oqmd-337852, space group 123
Stoichiometry: In 0.5000, Sc 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1397.3 K, x(Sc) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:in-sc:insc-l10
mp: mp:mp-aaacqrqy
oqmd: oqmd:oqmd-337852
tdb: tdb:InSc-18Hu.tdb:INSC_L10

TDB models of INSC_L10 (1): PHASE and CONSTITUENT statements as written

InSc-18Hu.tdb: INSC_L10, type code %, sha256 f1ee140f2427707f…

57: PHASE INSC_L10 % 2 1 1 !
58: CONST INSC_L10 : IN : SC : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

INSC2_B82 (In–Sc)

Id: phase:in-sc:insc2-b82; status assigned
Structure: InNi2 · B8_2 · hP6 · P6_3/mmc (194); type st:b8-2-inni2-hp6; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaabujs and oqmd-11156, space group 194
Stoichiometry: In 0.3333, Sc 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–1681.16 K, x(Sc) 0.66667–0.66667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:in-sc:insc2-b82
mp: mp:mp-aaaabujs
oqmd: oqmd:oqmd-11156
tdb: tdb:InSc-18Hu.tdb:INSC2_B82

TDB models of INSC2_B82 (1): PHASE and CONSTITUENT statements as written

InSc-18Hu.tdb: INSC2_B82, type code %, sha256 f1ee140f2427707f…

67: PHASE INSC2_B82 % 2 1 2 !
68: CONST INSC2_B82 : IN : SC : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

INSC3_D019 (In–Sc)

Id: phase:in-sc:insc3-d019; status assigned
Structure: Ni3Sn · D0_19 · hP8 · P6_3/mmc (194); type st:d0-19-ni3sn-hp8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaabdef and oqmd-3261, space group 194
Stoichiometry: In 0.2500, Sc 0.7500
Stability: stable in 1 of 1 calculated diagram(s): 300–1622.23 K, x(Sc) 0.75–0.75
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:in-sc:insc3-d019
mp: mp:mp-aaaabdef
oqmd: oqmd:oqmd-3261
tdb: tdb:InSc-18Hu.tdb:INSC3_D019

TDB models of INSC3_D019 (1): PHASE and CONSTITUENT statements as written

InSc-18Hu.tdb: INSC3_D019, type code %, sha256 f1ee140f2427707f…

72: PHASE INSC3_D019 % 2 1 3 !
73: CONST INSC3_D019 : IN : SC : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
assessment that models this phase

LIQUID (In–Sc)

Id: phase:in-sc:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 429.75–2500 K, x(Sc) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sc:liquid
tdb: tdb:InSc-18Hu.tdb:LIQUID

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

InSc-18Hu.tdb: LIQUID, type code %, sha256 f1ee140f2427707f…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : IN SC : !

Example references (1 of 1; assessments first):

doi:10.2298/JMMB171121004H Z. Hu, C. Huang, J. Tu, Y. Huang, A. Dong, J. Mining Metall. B, 54, 161-67(2018).
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}
}