In–Sr phases

13 phases (tier A 7, tier C 4, liquid 1, needs_review 1); 12 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–Sr system page · Markdown · field reference

Phases of the In–Sr system (13)
Phase	Structure	Basis	Stability (calculated)	TDB models
TETRAGONAL_A6 phase:in-sr:a6-tetragonal	In · A6 · tI2 · I4/mmm (139)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–431.36 K, x(Sr) 0–0	1
BCC_A2 phase:in-sr:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 820–2500 K, x(Sr) 0.99999–1	1
FCC_A1 phase:in-sr:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–820 K, x(Sr) 0.99999–1	1
HCP_A3 phase:in-sr:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	1
IN2SR phase:in-sr:in2sr	CaIn2 · hP6 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1202.73 K, x(Sr) 0.33333–0.33333	1
IN3SR_D019 phase:in-sr:in3sr-d019	Ni3Sn · D0_19 · hP8 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–814.08 K, x(Sr) 0.25–0.25	1
IN3SR2 phase:in-sr:in3sr2	Ca3Ga5 · oC32 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1080.98 K, x(Sr) 0.4–0.4	1
IN3SR5_D8L phase:in-sr:in3sr5-d8l	Cr5B3 · D8_l · tI32 · I4/mcm (140)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–844.46 K, x(Sr) 0.625–0.625	1
IN5SR_D2D phase:in-sr:in5sr-d2d	CaCu5 · D2_d · hP6 · P6/mmm (191)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–693.41 K, x(Sr) 0.16667–0.16667	1
IN5SR2 phase:in-sr:in5sr2		needs_review	stable in 1 of 1 calculated diagram(s): 300–892.57 K, x(Sr) 0.28571–0.28571	1
INSR phase:in-sr:insr	InSr · oF64 · Fdd2 (43)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–989.89 K, x(Sr) 0.5–0.5	1
INSR3 phase:in-sr:insr3	Ca28Ga11 · oI178 · Imm2 (44)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–829.16 K, x(Sr) 0.75–0.75	1
LIQUID phase:in-sr:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 423.36–2500 K, x(Sr) 0–1	1

TETRAGONAL_A6 (In–Sr)

Id: phase:in-sr: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): 300–431.36 K, x(Sr) 0–0
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:a6-tetragonal
tdb: tdb:InSr-14Wan.tdb:TETRAGONAL_A6

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

InSr-14Wan.tdb: TETRAGONAL_A6, type code %, sha256 546633426939aa34…

40: PHASE TETRAGONAL_A6 % 1 1 !
41: CONST TETRAGONAL_A6 : IN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

BCC_A2 (In–Sr)

Id: phase:in-sr: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): 820–2500 K, x(Sr) 0.99999–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:bcc-a2
tdb: tdb:InSr-14Wan.tdb:BCC_A2

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

InSr-14Wan.tdb: BCC_A2, type code %B, sha256 546633426939aa34…

30: PHASE BCC_A2 %B 2 1 3 !
31: CONST BCC_A2 : IN SR% : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

FCC_A1 (In–Sr)

Id: phase:in-sr:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 300–820 K, x(Sr) 0.99999–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:fcc-a1
tdb: tdb:InSr-14Wan.tdb:FCC_A1

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

InSr-14Wan.tdb: FCC_A1, type code %A, sha256 546633426939aa34…

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

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

HCP_A3 (In–Sr)

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

Names (2): corpus: corpus:phase:in-sr:hcp-a3
tdb: tdb:InSr-14Wan.tdb:HCP_A3

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

InSr-14Wan.tdb: HCP_A3, type code %A, sha256 546633426939aa34…

35: PHASE HCP_A3 %A 2 1 0.5 !
36: CONST HCP_A3 : IN SR : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

IN2SR (In–Sr)

Id: phase:in-sr:in2sr; status assigned
Structure: CaIn2 · hP6 · P6_3/mmc (194); type st:cain2-hp6; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: In 0.6667, Sr 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1202.73 K, x(Sr) 0.33333–0.33333
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:in2sr
tdb: tdb:InSr-14Wan.tdb:IN2SR

TDB models of IN2SR (1): PHASE and CONSTITUENT statements as written

InSr-14Wan.tdb: IN2SR, type code %, sha256 546633426939aa34…

60: PHASE IN2SR % 2 2 1 !
61: CONST IN2SR : IN : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

IN3SR_D019 (In–Sr)

Id: phase:in-sr:in3sr-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
Stoichiometry: In 0.7500, Sr 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 300–814.08 K, x(Sr) 0.25–0.25
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:in3sr-d019
tdb: tdb:InSr-14Wan.tdb:IN3SR_D019

TDB models of IN3SR_D019 (1): PHASE and CONSTITUENT statements as written

InSr-14Wan.tdb: IN3SR_D019, type code %, sha256 546633426939aa34…

50: PHASE IN3SR_D019 % 2 3 1 !
51: CONST IN3SR_D019 : IN : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

IN3SR2 (In–Sr)

Id: phase:in-sr:in3sr2; status assigned
Structure: Ca3Ga5 · oC32 · Cmcm (63); type st:ca3ga5-oc32; 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: In 0.6000, Sr 0.4000
Stability: stable in 1 of 1 calculated diagram(s): 300–1080.98 K, x(Sr) 0.4–0.4
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:in3sr2
tdb: tdb:InSr-14Wan.tdb:IN3SR2

TDB models of IN3SR2 (1): PHASE and CONSTITUENT statements as written

InSr-14Wan.tdb: IN3SR2, type code %, sha256 546633426939aa34…

65: PHASE IN3SR2 % 2 3 2 !
66: CONST IN3SR2 : IN : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

IN3SR5_D8L (In–Sr)

Id: phase:in-sr:in3sr5-d8l; status assigned
Structure: Cr5B3 · D8_l · tI32 · I4/mcm (140); type st:d8-l-cr5b3-ti32; tier A: standard phase name; confidence high
Stoichiometry: In 0.3750, Sr 0.6250
Stability: stable in 1 of 1 calculated diagram(s): 300–844.46 K, x(Sr) 0.625–0.625
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:in3sr5-d8l
tdb: tdb:InSr-14Wan.tdb:IN3SR5_D8L

TDB models of IN3SR5_D8L (1): PHASE and CONSTITUENT statements as written

InSr-14Wan.tdb: IN3SR5_D8L, type code %, sha256 546633426939aa34…

75: PHASE IN3SR5_D8L % 2 3 5 !
76: CONST IN3SR5_D8L : IN : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

IN5SR_D2D (In–Sr)

Id: phase:in-sr:in5sr-d2d; status assigned
Structure: CaCu5 · D2_d · hP6 · P6/mmm (191); type st:d2-d-cacu5-hp6; tier A: standard phase name; confidence high
Stoichiometry: In 0.8333, Sr 0.1667
Stability: stable in 1 of 1 calculated diagram(s): 300–693.41 K, x(Sr) 0.16667–0.16667
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:in5sr-d2d
tdb: tdb:InSr-14Wan.tdb:IN5SR_D2D

TDB models of IN5SR_D2D (1): PHASE and CONSTITUENT statements as written

InSr-14Wan.tdb: IN5SR_D2D, type code %, sha256 546633426939aa34…

45: PHASE IN5SR_D2D % 2 5 1 !
46: CONST IN5SR_D2D : IN : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

IN5SR2 (In–Sr)

Id: phase:in-sr:in5sr2; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (sgte_mmc2): (In5Sr2) — Hallstedt 2025 mmc2 row for IN5SR2: In5Sr2
Stoichiometry: In 0.7143, Sr 0.2857
Stability: stable in 1 of 1 calculated diagram(s): 300–892.57 K, x(Sr) 0.28571–0.28571
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:in5sr2
tdb: tdb:InSr-14Wan.tdb:IN5SR2

TDB models of IN5SR2 (1): PHASE and CONSTITUENT statements as written

InSr-14Wan.tdb: IN5SR2, type code %, sha256 546633426939aa34…

55: PHASE IN5SR2 % 2 5 2 !
56: CONST IN5SR2 : IN : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

INSR (In–Sr)

Id: phase:in-sr:insr; status assigned
Structure: InSr · oF64 · Fdd2 (43); type st:insr-of64; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: In 0.5000, Sr 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–989.89 K, x(Sr) 0.5–0.5
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:insr
tdb: tdb:InSr-14Wan.tdb:INSR

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

InSr-14Wan.tdb: INSR, type code %, sha256 546633426939aa34…

70: PHASE INSR % 2 1 1 !
71: CONST INSR : IN : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

INSR3 (In–Sr)

Id: phase:in-sr:insr3; status assigned
Structure: Ca28Ga11 · oI178 · Imm2 (44); type st:ca28ga11-oi178; 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: In 0.2500, Sr 0.7500
Stability: stable in 1 of 1 calculated diagram(s): 300–829.16 K, x(Sr) 0.75–0.75
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:insr3
tdb: tdb:InSr-14Wan.tdb:INSR3

TDB models of INSR3 (1): PHASE and CONSTITUENT statements as written

InSr-14Wan.tdb: INSR3, type code %, sha256 546633426939aa34…

80: PHASE INSR3 % 2 1 3 !
81: CONST INSR3 : IN : SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
assessment that models this phase

LIQUID (In–Sr)

Id: phase:in-sr:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 423.36–2500 K, x(Sr) 0–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:in-sr:liquid
tdb: tdb:InSr-14Wan.tdb:LIQUID

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

InSr-14Wan.tdb: LIQUID, type code %, sha256 546633426939aa34…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : IN SR : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2013.12.001 Yao Wang, Jinghua Xin, Chong Chen, Shuhong Liu, Biao Hu, Yong Du, Thermodynamic assessment of the Sr–In and Sr–Bi systems supported by first-principles calculations, Calphad 45, 49-54 (2014).
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}
}