Si–Sr phases

10 phases (tier A 8, 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 · Si–Sr system page · Markdown · field reference

Phases of the Si–Sr system (10)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
DIAMOND_A4 phase:si-sr:a4-diamond	C (diamond) · A4 · cF8 · Fd-3m (227)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1687 K, x(Sr) 0–0.00725	14	5
BCC_A2 phase:si-sr:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 820–2500 K, x(Sr) 1–1	9	5
FCC_A1 phase:si-sr:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1135 K, x(Sr) 1–1	0	5
HCP_A3 phase:si-sr:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 5 calculated diagram(s)	0	5
LIQUID phase:si-sr:liquid	liquid	liquid	stable in 5 of 5 calculated diagram(s): 1008.07–2500 K, x(Sr) 0–1	71	5
SI2SR_ALPHA phase:si-sr:si2sr-alpha		needs_review	stable in 5 of 5 calculated diagram(s): 300–849.73 K, x(Sr) 0.33333–0.33333	14	5
SI2SR_CC phase:si-sr:si2sr-cc	Si2Th · C_c · tI12 · I4_1/amd (141)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 650.94–1398.69 K, x(Sr) 0.33386–0.37298	38	5
SI3SR5_D8L phase:si-sr:si3sr5-d8l	Cr5B3 · D8_l · tI32 · I4/mcm (140)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1427.7 K, x(Sr) 0.625–0.625	28	5
SISR_B33 phase:si-sr:sisr-b33	CrB · B33 · oC8 · Cmcm (63)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1464.4 K, x(Sr) 0.5–0.5	35	5
SISR2_C37 phase:si-sr:sisr2-c37	Co2Si · C37 · oP12 · Pnma (62)	tier A: standard phase name	stable in 5 of 5 calculated diagram(s): 300–1370.56 K, x(Sr) 0.66667–0.66667	23	5

DIAMOND_A4 (Si–Sr)

Id: phase:si-sr: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
Stability: stable in 5 of 5 calculated diagram(s): 300–1687 K, x(Sr) 0–0.00725
Literature: 14 values (14 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:si-sr:a4-diamond, corpus:phase:si-sr:diamond-a4
paper: paper:10.1016/j.calphad.2009.07.001:Si, paper:10.1016/j.calphad.2011.09.007:(Si)
tdb: tdb:SiSr-09Gar-ass.tdb:DIAMOND_A4, tdb:SiSr-09Gar-sub.tdb:DIAMOND_A4, tdb:SiSr-11Li-ass.tdb:DIAMOND_A4, tdb:SiSr-11Li-sub.tdb:DIAMOND_A4, tdb:SiSr-20Yi.tdb:DIAMOND_A4

TDB models of DIAMOND_A4 (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: DIAMOND_A4, type code %, sha256 e825df829ea13daa…

50: PHASE DIAMOND_A4 % 1 1 !
51: CONST DIAMOND_A4 : SI : !

SiSr-09Gar-sub.tdb: DIAMOND_A4, type code %, sha256 c18609c145d86a66…

47: PHASE DIAMOND_A4 % 1 1 !
48: CONST DIAMOND_A4 : SI : !

SiSr-11Li-ass.tdb: DIAMOND_A4, type code %, sha256 c699e96af0535a4c…

48: PHASE DIAMOND_A4 % 1 1 !
49: CONST DIAMOND_A4 : SI% SR : !

SiSr-11Li-sub.tdb: DIAMOND_A4, type code %, sha256 284219837343eb28…

44: PHASE DIAMOND_A4 % 1 1 !
45: CONST DIAMOND_A4 : SI% SR : !

SiSr-20Yi.tdb: DIAMOND_A4, type code %, sha256 bd62e207cf2b9861…

43: PHASE DIAMOND_A4 % 1 1 !
44: CONST DIAMOND_A4 : SI% SR : !

Example references (7 of 7; assessments first):

doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase
doi:10.1007/bf02877630 V.P. Itkin, C.B. Alcock, J. Phase Equilib. 10 (1989) 630.
cited as the source of values for this phase
doi:10.1016/0022-4596(78)90010-5 Jürgen Evers, Transformation of three-dimensional three-connected silicon nets in SrSi2, Journal of Solid State Chemistry 24, 199-207 (1978).
cited as the source of values for this phase
doi:10.1016/j.calphad.2010.02.005 B. Rygalin, V. Prokofieva, L. Pavlova, Y.E. Sokolov, The Si–Sr and Si–Ba phase diagrams over the Si-rich composition range, CALPHAD 34 (2010) 196–199.
cited as the source of values for this phase
doi:10.1016/j.jallcom.2003.11.003 A Palenzona, M Pani, The phase diagram of the Sr–Si system, Journal of Alloys and Compounds 373, 214-219 (2004).
cited as the source of values for this phase

BCC_A2 (Si–Sr)

Id: phase:si-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 5 of 5 calculated diagram(s): 820–2500 K, x(Sr) 1–1
Literature: 9 values (9 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:si-sr:bcc-a2
paper: paper:10.1016/j.calphad.2009.07.001:(βSr), paper:10.1016/j.calphad.2011.09.007:β-Sr
tdb: tdb:SiSr-09Gar-ass.tdb:BCC_A2, tdb:SiSr-09Gar-sub.tdb:BCC_A2, tdb:SiSr-11Li-ass.tdb:BCC_A2, tdb:SiSr-11Li-sub.tdb:BCC_A2, tdb:SiSr-20Yi.tdb:BCC_A2

TDB models of BCC_A2 (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: BCC_A2, type code %B, sha256 e825df829ea13daa…

40: PHASE BCC_A2 %B 2 1 3 !
41: CONST BCC_A2 : SI SR% : VA : !

SiSr-09Gar-sub.tdb: BCC_A2, type code %B, sha256 c18609c145d86a66…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : SI SR% : VA : !

SiSr-11Li-ass.tdb: BCC_A2, type code %B, sha256 c699e96af0535a4c…

38: PHASE BCC_A2 %B 2 1 3 !
39: CONST BCC_A2 : SI SR% : VA : !

SiSr-11Li-sub.tdb: BCC_A2, type code %B, sha256 284219837343eb28…

34: PHASE BCC_A2 %B 2 1 3 !
35: CONST BCC_A2 : SI SR% : VA : !

SiSr-20Yi.tdb: BCC_A2, type code %B, sha256 bd62e207cf2b9861…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : SI SR% : VA : !

Example references (5 of 5; assessments first):

doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase
doi:10.1016/j.jallcom.2003.11.003 A Palenzona, M Pani, The phase diagram of the Sr–Si system, Journal of Alloys and Compounds 373, 214-219 (2004).
cited as the source of values for this phase
doi:10.1007/bf02877630 V.P. Itkin, C.B. Alcock, J. Phase Equilib. 10 (1989) 630.
cited as the source of values for this phase

FCC_A1 (Si–Sr)

Id: phase:si-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 5 of 5 calculated diagram(s): 300–1135 K, x(Sr) 1–1
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:si-sr:fcc-a1
tdb: tdb:SiSr-09Gar-ass.tdb:FCC_A1, tdb:SiSr-09Gar-sub.tdb:FCC_A1, tdb:SiSr-11Li-ass.tdb:FCC_A1, tdb:SiSr-11Li-sub.tdb:FCC_A1, tdb:SiSr-20Yi.tdb:FCC_A1

TDB models of FCC_A1 (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: FCC_A1, type code %A, sha256 e825df829ea13daa…

35: PHASE FCC_A1 %A 2 1 1 !
36: CONST FCC_A1 : SI SR% : VA : !

SiSr-09Gar-sub.tdb: FCC_A1, type code %A, sha256 c18609c145d86a66…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : SI SR% : VA : !

SiSr-11Li-ass.tdb: FCC_A1, type code %A, sha256 c699e96af0535a4c…

33: PHASE FCC_A1 %A 2 1 1 !
34: CONST FCC_A1 : SI SR% : VA : !

SiSr-11Li-sub.tdb: FCC_A1, type code %A, sha256 284219837343eb28…

29: PHASE FCC_A1 %A 2 1 1 !
30: CONST FCC_A1 : SI SR% : VA : !

SiSr-20Yi.tdb: FCC_A1, type code %A, sha256 bd62e207cf2b9861…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : SI SR% : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase
doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase

HCP_A3 (Si–Sr)

Id: phase:si-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 5 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (6): corpus: corpus:phase:si-sr:hcp-a3
tdb: tdb:SiSr-09Gar-ass.tdb:HCP_A3, tdb:SiSr-09Gar-sub.tdb:HCP_A3, tdb:SiSr-11Li-ass.tdb:HCP_A3, tdb:SiSr-11Li-sub.tdb:HCP_A3, tdb:SiSr-20Yi.tdb:HCP_A3

TDB models of HCP_A3 (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: HCP_A3, type code %, sha256 e825df829ea13daa…

45: PHASE HCP_A3 % 2 1 0.5 !
46: CONST HCP_A3 : SI SR : VA : !

SiSr-09Gar-sub.tdb: HCP_A3, type code %, sha256 c18609c145d86a66…

42: PHASE HCP_A3 % 2 1 0.5 !
43: CONST HCP_A3 : SI SR : VA : !

SiSr-11Li-ass.tdb: HCP_A3, type code %, sha256 c699e96af0535a4c…

43: PHASE HCP_A3 % 2 1 0.5 !
44: CONST HCP_A3 : SI SR : VA : !

SiSr-11Li-sub.tdb: HCP_A3, type code %, sha256 284219837343eb28…

39: PHASE HCP_A3 % 2 1 0.5 !
40: CONST HCP_A3 : SI SR : VA : !

SiSr-20Yi.tdb: HCP_A3, type code %, sha256 bd62e207cf2b9861…

38: PHASE HCP_A3 % 2 1 0.5 !
39: CONST HCP_A3 : SI SR : VA : !

Example references (3 of 3; assessments first):

doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase
doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase

LIQUID (Si–Sr)

Id: phase:si-sr:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 1008.07–2500 K, x(Sr) 0–1
Literature: 71 values (71 accepted) from 2 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:si-sr:liquid
paper: paper:10.1016/j.calphad.2009.07.001:L, paper:10.1016/j.calphad.2009.07.001:liquid, paper:10.1016/j.calphad.2011.09.007:L
tdb: tdb:SiSr-09Gar-ass.tdb:LIQUID, tdb:SiSr-09Gar-sub.tdb:LIQUID, tdb:SiSr-11Li-ass.tdb:LIQUID, tdb:SiSr-11Li-sub.tdb:LIQUID, tdb:SiSr-20Yi.tdb:LIQUID

TDB models of LIQUID (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: LIQUID, type code %, sha256 e825df829ea13daa…

30: PHASE LIQUID:L % 1 1 !
31: CONST LIQUID:L : SI SISR SR : !

SiSr-09Gar-sub.tdb: LIQUID, type code %, sha256 c18609c145d86a66…

27: PHASE LIQUID:L % 1 1 !
28: CONST LIQUID:L : SI SR : !

SiSr-11Li-ass.tdb: LIQUID, type code %, sha256 c699e96af0535a4c…

28: PHASE LIQUID:L % 1 1 !
29: CONST LIQUID:L : SI SISR SR : !

SiSr-11Li-sub.tdb: LIQUID, type code %, sha256 284219837343eb28…

24: PHASE LIQUID:L % 1 1 !
25: CONST LIQUID:L : SI SR : !

SiSr-20Yi.tdb: LIQUID, type code %, sha256 bd62e207cf2b9861…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : SI SR : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase
doi:10.1016/j.jallcom.2003.11.003 A Palenzona, M Pani, The phase diagram of the Sr–Si system, Journal of Alloys and Compounds 373, 214-219 (2004).
cited as the source of values for this phase
doi:10.1007/bf02877630 V.P. Itkin, C.B. Alcock, J. Phase Equilib. 10 (1989) 630.
cited as the source of values for this phase
doi:10.1016/j.calphad.2010.02.005 B. Rygalin, V. Prokofieva, L. Pavlova, Y.E. Sokolov, The Si–Sr and Si–Ba phase diagrams over the Si-rich composition range, CALPHAD 34 (2010) 196–199.
cited as the source of values for this phase

SI2SR_ALPHA (Si–Sr)

Id: phase:si-sr:si2sr-alpha; status needs_review
No structure assigned. Why: dft_space_group_141_matches_3_structure_types; no_structure_token; sgte_mmc2_row_disagrees_with_dft
Candidate (dft_mp): I4_1/amd (141) — on-hull MP SrSi2 at x(SR)=0.3333
Candidate (dft_oqmd): I41/amd (141) — on-hull OQMD Si2 Sr1 at x(SR)=0.3333
Candidate (dft_space_group_and_stoichiometry): Si2Th · C_c · tI12 · I4_1/amd (141) — space group 141 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): TiO2 · C5 · tI12 · I4_1/amd (141) — space group 141 and stoichiometry match
Candidate (dft_space_group_and_stoichiometry): Mo2N · tI12 · I4_1/amd (141) — space group 141 and stoichiometry match
Candidate (sgte_mmc2): Si2Sr · cP12 · P4_132 (213) — Hallstedt 2025 mmc2 row for SI2SR_ALPHA: Si2Sr-alpha
Candidate (tdb_comment): Si2Sr · cP12 · P4_132 — SiSr-09Gar-ass.tdb: 'Prototype Si2Sr (cP12, P4_132)'
Candidate (tdb_comment): Si2Sr · cP12 · P4_132 — SiSr-09Gar-sub.tdb: 'Prototype Si2Sr (cP12, P4_132)'
Stoichiometry: Si 0.6667, Sr 0.3333
Stability: stable in 5 of 5 calculated diagram(s): 300–849.73 K, x(Sr) 0.33333–0.33333
Literature: 14 values (14 accepted) from 1 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:si-sr:si2sr-alpha
paper: paper:10.1016/j.calphad.2011.09.007:α-Si2Sr
tdb: tdb:SiSr-09Gar-ass.tdb:SI2SR_ALPHA, tdb:SiSr-09Gar-sub.tdb:SI2SR_ALPHA, tdb:SiSr-11Li-ass.tdb:SI2SR_ALPHA, tdb:SiSr-11Li-sub.tdb:SI2SR_ALPHA, tdb:SiSr-20Yi.tdb:SI2SR_ALPHA

TDB models of SI2SR_ALPHA (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: SI2SR_ALPHA, type code %, sha256 e825df829ea13daa…

55: PHASE SI2SR_ALPHA % 2 2 1 !
56: CONST SI2SR_ALPHA : SI : SR : !

SiSr-09Gar-sub.tdb: SI2SR_ALPHA, type code %, sha256 c18609c145d86a66…

52: PHASE SI2SR_ALPHA % 2 2 1 !
53: CONST SI2SR_ALPHA : SI : SR : !

SiSr-11Li-ass.tdb: SI2SR_ALPHA, type code %, sha256 c699e96af0535a4c…

53: PHASE SI2SR_ALPHA % 2 2 1 !
54: CONST SI2SR_ALPHA : SI : SR : !

SiSr-11Li-sub.tdb: SI2SR_ALPHA, type code %, sha256 284219837343eb28…

49: PHASE SI2SR_ALPHA % 2 2 1 !
50: CONST SI2SR_ALPHA : SI : SR : !

SiSr-20Yi.tdb: SI2SR_ALPHA, type code %, sha256 bd62e207cf2b9861…

48: PHASE SI2SR_ALPHA % 2 2 1 !
49: CONST SI2SR_ALPHA : SI : SR : !

Example references (7 of 7; assessments first):

doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase; cited as the source of values for this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase
doi:10.1016/0022-4596(78)90010-5 Jürgen Evers, Transformation of three-dimensional three-connected silicon nets in SrSi2, Journal of Solid State Chemistry 24, 199-207 (1978).
cited as the source of values for this phase
doi:10.1016/j.intermet.2005.10.008 G. Balducci, S. Brutti, A. Ciccioli, G. Gigli, G. Trionfetti, A. Palenzona et al., Vapor pressures and thermodynamic properties of strontium silicides, Intermetallics 14, 578-583 (2006).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2003.11.003 A Palenzona, M Pani, The phase diagram of the Sr–Si system, Journal of Alloys and Compounds 373, 214-219 (2004).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2009.05.083 A. Garay, M.E. Williams, G. Trápaga, R. Arróyave, Thermodynamics, lattice stability and defect structure of strontium silicides via first-principles calculations, Journal of Alloys and Compounds 484, 822–831 (2009).
cited as the source of values for this phase

SI2SR_CC (Si–Sr)

Id: phase:si-sr:si2sr-cc; status assigned
Structure: Si2Th · C_c · tI12 · I4_1/amd (141); type st:c-c-si2th-ti12; tier A: standard phase name; confidence high
Stability: stable in 5 of 5 calculated diagram(s): 650.94–1398.69 K, x(Sr) 0.33386–0.37298
Literature: 38 values (38 accepted) from 2 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:si-sr:si2sr-cc
paper: paper:10.1016/j.calphad.2009.07.001:SrSi2, paper:10.1016/j.calphad.2011.09.007:β-Si2Sr
tdb: tdb:SiSr-09Gar-ass.tdb:SI2SR_CC, tdb:SiSr-09Gar-sub.tdb:SI2SR_CC, tdb:SiSr-11Li-ass.tdb:SI2SR_CC, tdb:SiSr-11Li-sub.tdb:SI2SR_CC, tdb:SiSr-20Yi.tdb:SI2SR_CC

TDB models of SI2SR_CC (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: SI2SR_CC, type code %, sha256 e825df829ea13daa…

60: PHASE SI2SR_CC % 2 2 1 !
61: CONST SI2SR_CC : SI% VA : SR : !

SiSr-09Gar-sub.tdb: SI2SR_CC, type code %, sha256 c18609c145d86a66…

57: PHASE SI2SR_CC % 2 2 1 !
58: CONST SI2SR_CC : SI% VA : SR : !

SiSr-11Li-ass.tdb: SI2SR_CC, type code %, sha256 c699e96af0535a4c…

58: PHASE SI2SR_CC % 2 2 1 !
59: CONST SI2SR_CC : SI% VA : SR : !

SiSr-11Li-sub.tdb: SI2SR_CC, type code %, sha256 284219837343eb28…

54: PHASE SI2SR_CC % 2 2 1 !
55: CONST SI2SR_CC : SI% VA : SR : !

SiSr-20Yi.tdb: SI2SR_CC, type code %, sha256 bd62e207cf2b9861…

53: PHASE SI2SR_CC % 2 2 1 !
54: CONST SI2SR_CC : SI% VA : SR : !

Example references (9 of 9; assessments first):

doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase
doi:10.1016/j.jallcom.2003.11.003 A Palenzona, M Pani, The phase diagram of the Sr–Si system, Journal of Alloys and Compounds 373, 214-219 (2004).
cited as the source of values for this phase
doi:10.1016/j.intermet.2005.10.008 G. Balducci, S. Brutti, A. Ciccioli, G. Gigli, G. Trionfetti, A. Palenzona et al., Vapor pressures and thermodynamic properties of strontium silicides, Intermetallics 14, 578-583 (2006).
cited as the source of values for this phase
doi:10.1007/bf02877630 V.P. Itkin, C.B. Alcock, J. Phase Equilib. 10 (1989) 630.
cited as the source of values for this phase
doi:10.1016/0022-4596(78)90010-5 Jürgen Evers, Transformation of three-dimensional three-connected silicon nets in SrSi2, Journal of Solid State Chemistry 24, 199-207 (1978).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2009.05.083 A. Garay, M.E. Williams, G. Trápaga, R. Arróyave, Thermodynamics, lattice stability and defect structure of strontium silicides via first-principles calculations, Journal of Alloys and Compounds 484, 822–831 (2009).
cited as the source of values for this phase
doi:10.1016/j.calphad.2010.02.005 B. Rygalin, V. Prokofieva, L. Pavlova, Y.E. Sokolov, The Si–Sr and Si–Ba phase diagrams over the Si-rich composition range, CALPHAD 34 (2010) 196–199.
cited as the source of values for this phase

SI3SR5_D8L (Si–Sr)

Id: phase:si-sr:si3sr5-d8l; status assigned
Structure: Cr5B3 · D8_l · tI32 · I4/mcm (140); type st:d8-l-cr5b3-ti32; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaabcs and oqmd-24997, space group 140
Stoichiometry: Si 0.3750, Sr 0.6250
Stability: stable in 5 of 5 calculated diagram(s): 300–1427.7 K, x(Sr) 0.625–0.625
Literature: 28 values (28 accepted) from 2 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:si-sr:si3sr5-d8l
mp: mp:mp-aaaaabcs
oqmd: oqmd:oqmd-24997
paper: paper:10.1016/j.calphad.2009.07.001:Sr5Si3, paper:10.1016/j.calphad.2011.09.007:Si3Sr5
tdb: tdb:SiSr-09Gar-ass.tdb:SI3SR5_D8L, tdb:SiSr-09Gar-sub.tdb:SI3SR5_D8L, tdb:SiSr-11Li-ass.tdb:SI3SR5_D8L, tdb:SiSr-11Li-sub.tdb:SI3SR5_D8L, tdb:SiSr-20Yi.tdb:SI3SR5_D8L

TDB models of SI3SR5_D8L (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: SI3SR5_D8L, type code %, sha256 e825df829ea13daa…

70: PHASE SI3SR5_D8L % 2 3 5 !
71: CONST SI3SR5_D8L : SI : SR : !

SiSr-09Gar-sub.tdb: SI3SR5_D8L, type code %, sha256 c18609c145d86a66…

67: PHASE SI3SR5_D8L % 2 3 5 !
68: CONST SI3SR5_D8L : SI : SR : !

SiSr-11Li-ass.tdb: SI3SR5_D8L, type code %, sha256 c699e96af0535a4c…

68: PHASE SI3SR5_D8L % 2 3 5 !
69: CONST SI3SR5_D8L : SI : SR : !

SiSr-11Li-sub.tdb: SI3SR5_D8L, type code %, sha256 284219837343eb28…

64: PHASE SI3SR5_D8L % 2 3 5 !
65: CONST SI3SR5_D8L : SI : SR : !

SiSr-20Yi.tdb: SI3SR5_D8L, type code %, sha256 bd62e207cf2b9861…

63: PHASE SI3SR5_D8L % 2 3 5 !
64: CONST SI3SR5_D8L : SI : SR : !

Example references (6 of 6; assessments first):

doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase
doi:10.1016/j.jallcom.2003.11.003 A Palenzona, M Pani, The phase diagram of the Sr–Si system, Journal of Alloys and Compounds 373, 214-219 (2004).
cited as the source of values for this phase
doi:10.1016/j.intermet.2005.10.008 G. Balducci, S. Brutti, A. Ciccioli, G. Gigli, G. Trionfetti, A. Palenzona et al., Vapor pressures and thermodynamic properties of strontium silicides, Intermetallics 14, 578-583 (2006).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2009.05.083 A. Garay, M.E. Williams, G. Trápaga, R. Arróyave, Thermodynamics, lattice stability and defect structure of strontium silicides via first-principles calculations, Journal of Alloys and Compounds 484, 822–831 (2009).
cited as the source of values for this phase

SISR_B33 (Si–Sr)

Id: phase:si-sr:sisr-b33; status assigned
Structure: CrB · B33 · oC8 · Cmcm (63); type st:b33-crb-oc8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaadyj and oqmd-14241, space group 63
Stoichiometry: Si 0.5000, Sr 0.5000
Stability: stable in 5 of 5 calculated diagram(s): 300–1464.4 K, x(Sr) 0.5–0.5
Literature: 35 values (35 accepted) from 2 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:si-sr:sisr-b33
mp: mp:mp-aaaaadyj
oqmd: oqmd:oqmd-14241
paper: paper:10.1016/j.calphad.2009.07.001:SrSi, paper:10.1016/j.calphad.2011.09.007:SiSr
tdb: tdb:SiSr-09Gar-ass.tdb:SISR_B33, tdb:SiSr-09Gar-sub.tdb:SISR_B33, tdb:SiSr-11Li-ass.tdb:SISR_B33, tdb:SiSr-11Li-sub.tdb:SISR_B33, tdb:SiSr-20Yi.tdb:SISR_B33

TDB models of SISR_B33 (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: SISR_B33, type code %, sha256 e825df829ea13daa…

65: PHASE SISR_B33 % 2 1 1 !
66: CONST SISR_B33 : SI : SR : !

SiSr-09Gar-sub.tdb: SISR_B33, type code %, sha256 c18609c145d86a66…

62: PHASE SISR_B33 % 2 1 1 !
63: CONST SISR_B33 : SI : SR : !

SiSr-11Li-ass.tdb: SISR_B33, type code %, sha256 c699e96af0535a4c…

63: PHASE SISR_B33 % 2 1 1 !
64: CONST SISR_B33 : SI : SR : !

SiSr-11Li-sub.tdb: SISR_B33, type code %, sha256 284219837343eb28…

59: PHASE SISR_B33 % 2 1 1 !
60: CONST SISR_B33 : SI : SR : !

SiSr-20Yi.tdb: SISR_B33, type code %, sha256 bd62e207cf2b9861…

58: PHASE SISR_B33 % 2 1 1 !
59: CONST SISR_B33 : SI : SR : !

Example references (8 of 8; assessments first):

doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase
doi:10.1016/j.jallcom.2003.11.003 A Palenzona, M Pani, The phase diagram of the Sr–Si system, Journal of Alloys and Compounds 373, 214-219 (2004).
cited as the source of values for this phase
doi:10.1016/j.intermet.2005.10.008 G. Balducci, S. Brutti, A. Ciccioli, G. Gigli, G. Trionfetti, A. Palenzona et al., Vapor pressures and thermodynamic properties of strontium silicides, Intermetallics 14, 578-583 (2006).
cited as the source of values for this phase
doi:10.1007/bf02877630 V.P. Itkin, C.B. Alcock, J. Phase Equilib. 10 (1989) 630.
cited as the source of values for this phase
doi:10.1016/j.jallcom.2009.05.083 A. Garay, M.E. Williams, G. Trápaga, R. Arróyave, Thermodynamics, lattice stability and defect structure of strontium silicides via first-principles calculations, Journal of Alloys and Compounds 484, 822–831 (2009).
cited as the source of values for this phase
doi:10.1016/0022-4596(78)90010-5 Jürgen Evers, Transformation of three-dimensional three-connected silicon nets in SrSi2, Journal of Solid State Chemistry 24, 199-207 (1978).
cited as the source of values for this phase

SISR2_C37 (Si–Sr)

Id: phase:si-sr:sisr2-c37; status assigned
Structure: Co2Si · C37 · oP12 · Pnma (62); type st:c37-co2si-op12; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaabqo and oqmd-1713, space group 62
Stoichiometry: Si 0.3333, Sr 0.6667
Stability: stable in 5 of 5 calculated diagram(s): 300–1370.56 K, x(Sr) 0.66667–0.66667
Literature: 23 values (23 accepted) from 2 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:si-sr:sisr2-c37
mp: mp:mp-aaaaabqo
oqmd: oqmd:oqmd-1713
paper: paper:10.1016/j.calphad.2009.07.001:Sr2Si, paper:10.1016/j.calphad.2011.09.007:SiSr2
tdb: tdb:SiSr-09Gar-ass.tdb:SISR2_C37, tdb:SiSr-09Gar-sub.tdb:SISR2_C37, tdb:SiSr-11Li-ass.tdb:SISR2_C37, tdb:SiSr-11Li-sub.tdb:SISR2_C37, tdb:SiSr-20Yi.tdb:SISR2_C37

TDB models of SISR2_C37 (5): PHASE and CONSTITUENT statements as written

SiSr-09Gar-ass.tdb: SISR2_C37, type code %, sha256 e825df829ea13daa…

75: PHASE SISR2_C37 % 2 1 2 !
76: CONST SISR2_C37 : SI : SR : !

SiSr-09Gar-sub.tdb: SISR2_C37, type code %, sha256 c18609c145d86a66…

72: PHASE SISR2_C37 % 2 1 2 !
73: CONST SISR2_C37 : SI : SR : !

SiSr-11Li-ass.tdb: SISR2_C37, type code %, sha256 c699e96af0535a4c…

73: PHASE SISR2_C37 % 2 1 2 !
74: CONST SISR2_C37 : SI : SR : !

SiSr-11Li-sub.tdb: SISR2_C37, type code %, sha256 284219837343eb28…

69: PHASE SISR2_C37 % 2 1 2 !
70: CONST SISR2_C37 : SI : SR : !

SiSr-20Yi.tdb: SISR2_C37, type code %, sha256 bd62e207cf2b9861…

68: PHASE SISR2_C37 % 2 1 2 !
69: CONST SISR2_C37 : SI : SR : !

Example references (7 of 7; assessments first):

doi:10.1016/j.calphad.2011.09.007 Kai Li, Shuhong Liu, Chunsheng Sha, Yong Du, A thermodynamic reassessment of the Si–Sr system, Calphad 35, 594-600 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2009.07.001 Andres Garay, Gerardo Trápaga, Zi-Kui Liu, Raymundo Arróyave, Thermodynamic modeling of the Si–Sr system, Calphad 33, 550-556 (2009).
assessment that models this phase; cited as the source of values for this phase; reports values for this phase
doi:10.1016/j.calphad.2019.101732 W. Yi, J. Gao, Y. Tang, L. Zhang, Calphad, 68, 101732(2020).
assessment that models this phase
doi:10.1016/j.jallcom.2003.11.003 A Palenzona, M Pani, The phase diagram of the Sr–Si system, Journal of Alloys and Compounds 373, 214-219 (2004).
cited as the source of values for this phase
doi:10.1016/j.intermet.2005.10.008 G. Balducci, S. Brutti, A. Ciccioli, G. Gigli, G. Trionfetti, A. Palenzona et al., Vapor pressures and thermodynamic properties of strontium silicides, Intermetallics 14, 578-583 (2006).
cited as the source of values for this phase
doi:10.1016/j.jallcom.2009.05.083 A. Garay, M.E. Williams, G. Trápaga, R. Arróyave, Thermodynamics, lattice stability and defect structure of strontium silicides via first-principles calculations, Journal of Alloys and Compounds 484, 822–831 (2009).
cited as the source of values for this phase
doi:10.1007/bf02877630 V.P. Itkin, C.B. Alcock, J. Phase Equilib. 10 (1989) 630.
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}
}