Pt–Si phases

15 phases (tier A 7, tier B 1, tier C 4, liquid 1, needs_review 2); 13 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 · Pt–Si system page · Markdown · field reference

Phases of the Pt–Si system (15)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
DIAMOND_A4 phase:pt-si:a4-diamond	C (diamond) · A4 · cF8 · Fd-3m (227)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2499.68 K, x(Si) 1–1	3	1
BCC_A2 phase:pt-si:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
FCC_A1 phase:pt-si:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2063.01 K, x(Si) 0–0.01071	5	1
HCP_A3 phase:pt-si:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
LIQUID phase:pt-si:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 1124.26–2500 K, x(Si) 0–1	20	1
PT17SI8_ALPHA phase:pt-si:pt17si8-alpha	Pt12Si5 · tP68 · P4/n (85)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 1042.99–1280 K, x(Si) 0.32–0.32	2	1
PT17SI8_BETA phase:pt-si:pt17si8-beta	Ni12P5 · tI34 · I4/m (87)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1042.99 K, x(Si) 0.32–0.32	8	1
PT25SI7 phase:pt-si:pt25si7		needs_review	stable in 1 of 1 calculated diagram(s): 300–1115.4 K, x(Si) 0.218–0.218	2	1
PT2SI_C22 phase:pt-si:pt2si-c22	Fe2P · C22 · hP9 · P-62m (189)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 1017.54–1378.31 K, x(Si) 0.33333–0.33333	3	1
PT2SI_L2B phase:pt-si:pt2si-l2b	ThH2 · L'2_b · tI6 · I4/mmm (139)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 323.56–1017.54 K, x(Si) 0.33333–0.33333	10	1
PT3SI_ALPHA phase:pt-si:pt3si-alpha	GePt3 · mC16 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–715.5 K, x(Si) 0.25–0.25	3	1
PT3SI_D011 phase:pt-si:pt3si-d011	Fe3C · D0_11 · oP16 · Pnma (62)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 715.5–1147.35 K, x(Si) 0.25–0.25	12	1
PT5SI2 phase:pt-si:pt5si2		needs_review	stable in 1 of 1 calculated diagram(s): 300–1141.18 K, x(Si) 0.286–0.286	2	1
PT6SI5 phase:pt-si:pt6si5	Pt6Si5 · mP22 · P2_1/m (11)	tier B: DFT-supported (unique MP + OQMD match)	stable in 1 of 1 calculated diagram(s): 300–1292.73 K, x(Si) 0.45455–0.45455	4	1
PTSI_B31 phase:pt-si:ptsi-b31	MnP · B31 · oP8 · Pnma (62)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1504.68 K, x(Si) 0.5–0.5	8	1

DIAMOND_A4 (Pt–Si)

Id: phase:pt-si: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
Stoichiometry: Si 1.0000
Stability: stable in 1 of 1 calculated diagram(s): 300–2499.68 K, x(Si) 1–1
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:pt-si:a4-diamond, corpus:phase:pt-si:diamond-a4
paper: paper:10.1016/j.calphad.2007.07.010:Diamond(Si)
tdb: tdb:PtSi-08Xu.tdb:DIAMOND_A4

TDB models of DIAMOND_A4 (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: DIAMOND_A4, type code %, sha256 10c16b80054347fb…

41: PHASE DIAMOND_A4 % 1 1 !
42: CONST DIAMOND_A4 : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

BCC_A2 (Pt–Si)

Id: phase:pt-si:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; 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:pt-si:bcc-a2
tdb: tdb:PtSi-08Xu.tdb:BCC_A2

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

PtSi-08Xu.tdb: BCC_A2, type code %B, sha256 10c16b80054347fb…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : PT SI : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase

FCC_A1 (Pt–Si)

Id: phase:pt-si: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): 300–2063.01 K, x(Si) 0–0.01071
Literature: 5 values (5 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:fcc-a1
paper: paper:10.1016/j.calphad.2007.07.010:Fcc(Pt)
tdb: tdb:PtSi-08Xu.tdb:FCC_A1

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

PtSi-08Xu.tdb: FCC_A1, type code %A, sha256 10c16b80054347fb…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : PT SI : VA : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

HCP_A3 (Pt–Si)

Id: phase:pt-si: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:pt-si:hcp-a3
tdb: tdb:PtSi-08Xu.tdb:HCP_A3

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

PtSi-08Xu.tdb: HCP_A3, type code %A, sha256 10c16b80054347fb…

36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : PT SI : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase

LIQUID (Pt–Si)

Id: phase:pt-si:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1124.26–2500 K, x(Si) 0–1
Literature: 20 values (20 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:liquid
paper: paper:10.1016/j.calphad.2007.07.010:L
tdb: tdb:PtSi-08Xu.tdb:LIQUID

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

PtSi-08Xu.tdb: LIQUID, type code %, sha256 10c16b80054347fb…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : PT SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT17SI8_ALPHA (Pt–Si)

Id: phase:pt-si:pt17si8-alpha; status assigned
Structure: Pt12Si5 · tP68 · P4/n (85); type st:pt12si5-tp68; 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_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pt 0.6800, Si 0.3200
Stability: stable in 1 of 1 calculated diagram(s): 1042.99–1280 K, x(Si) 0.32–0.32
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:pt17si8-alpha
paper: paper:10.1016/j.calphad.2007.07.010:α-Pt17Si8
tdb: tdb:PtSi-08Xu.tdb:PT17SI8_ALPHA

TDB models of PT17SI8_ALPHA (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT17SI8_ALPHA, type code %, sha256 10c16b80054347fb…

66: PHASE PT17SI8_ALPHA % 2 17 8 !
67: CONST PT17SI8_ALPHA : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT17SI8_BETA (Pt–Si)

Id: phase:pt-si:pt17si8-beta; status assigned
Structure: Ni12P5 · tI34 · I4/m (87); type st:ni12p5-ti34; 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_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pt 0.6800, Si 0.3200
Stability: stable in 1 of 1 calculated diagram(s): 300–1042.99 K, x(Si) 0.32–0.32
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:pt17si8-beta
paper: paper:10.1016/j.calphad.2007.07.010:β-Pt17Si8
tdb: tdb:PtSi-08Xu.tdb:PT17SI8_BETA

TDB models of PT17SI8_BETA (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT17SI8_BETA, type code %, sha256 10c16b80054347fb…

71: PHASE PT17SI8_BETA % 2 17 8 !
72: CONST PT17SI8_BETA : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT25SI7 (Pt–Si)

Id: phase:pt-si:pt25si7; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Pt25Si7) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Pt25Si7) — Hallstedt 2025 mmc2 row for PT25SI7: Pt25Si7
Stoichiometry: Pt 0.7820, Si 0.2180
Stability: stable in 1 of 1 calculated diagram(s): 300–1115.4 K, x(Si) 0.218–0.218
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:pt25si7
paper: paper:10.1016/j.calphad.2007.07.010:Pt25Si7
tdb: tdb:PtSi-08Xu.tdb:PT25SI7

TDB models of PT25SI7 (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT25SI7, type code %, sha256 10c16b80054347fb…

46: PHASE PT25SI7 % 2 0.782 0.218 !
47: CONST PT25SI7 : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT2SI_C22 (Pt–Si)

Id: phase:pt-si:pt2si-c22; status assigned
Structure: Fe2P · C22 · hP9 · P-62m (189); type st:c22-fe2p-hp9; tier A: standard phase name; confidence high
Stoichiometry: Pt 0.6667, Si 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 1017.54–1378.31 K, x(Si) 0.33333–0.33333
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:pt2si-c22
paper: paper:10.1016/j.calphad.2007.07.010:α-Pt2Si
tdb: tdb:PtSi-08Xu.tdb:PT2SI_C22

TDB models of PT2SI_C22 (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT2SI_C22, type code %, sha256 10c16b80054347fb…

76: PHASE PT2SI_C22 % 2 2 1 !
77: CONST PT2SI_C22 : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT2SI_L2B (Pt–Si)

Id: phase:pt-si:pt2si-l2b; status assigned
Structure: ThH2 · L'2_b · tI6 · I4/mmm (139); type st:l-2-b-thh2-ti6; 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 (name_has_descriptive_tokens:L2B, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pt 0.6667, Si 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 323.56–1017.54 K, x(Si) 0.33333–0.33333
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:pt2si-l2b
paper: paper:10.1016/j.calphad.2007.07.010:β-Pt2Si
tdb: tdb:PtSi-08Xu.tdb:PT2SI_L2B

TDB models of PT2SI_L2B (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT2SI_L2B, type code %, sha256 10c16b80054347fb…

81: PHASE PT2SI_L2B % 2 2 1 !
82: CONST PT2SI_L2B : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT3SI_ALPHA (Pt–Si)

Id: phase:pt-si:pt3si-alpha; status assigned
Structure: GePt3 · mC16 · C2/m (12); type st:gept3-mc16; 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_structure_token, polymorph_family:other phases of this system have the same composition); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Pt 0.7500, Si 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 300–715.5 K, x(Si) 0.25–0.25
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:pt3si-alpha
paper: paper:10.1016/j.calphad.2007.07.010:α-Pt3Si
tdb: tdb:PtSi-08Xu.tdb:PT3SI_ALPHA

TDB models of PT3SI_ALPHA (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT3SI_ALPHA, type code %, sha256 10c16b80054347fb…

51: PHASE PT3SI_ALPHA % 2 3 1 !
52: CONST PT3SI_ALPHA : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT3SI_D011 (Pt–Si)

Id: phase:pt-si:pt3si-d011; status assigned
Structure: Fe3C · D0_11 · oP16 · Pnma (62); type st:d0-11-fe3c-op16; tier A: standard phase name; confidence high
Stoichiometry: Pt 0.7500, Si 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 715.5–1147.35 K, x(Si) 0.25–0.25
Literature: 12 values (12 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:pt3si-d011
paper: paper:10.1016/j.calphad.2007.07.010:β-Pt3Si
tdb: tdb:PtSi-08Xu.tdb:PT3SI_D011

TDB models of PT3SI_D011 (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT3SI_D011, type code %, sha256 10c16b80054347fb…

56: PHASE PT3SI_D011 % 2 3 1 !
57: CONST PT3SI_D011 : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT5SI2 (Pt–Si)

Id: phase:pt-si:pt5si2; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Pt5Si2) · ? — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Pt5Si2) — Hallstedt 2025 mmc2 row for PT5SI2: Pt25Si7
Stoichiometry: Pt 0.7140, Si 0.2860
Stability: stable in 1 of 1 calculated diagram(s): 300–1141.18 K, x(Si) 0.286–0.286
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:pt-si:pt5si2
paper: paper:10.1016/j.calphad.2007.07.010:Pt5Si2
tdb: tdb:PtSi-08Xu.tdb:PT5SI2

TDB models of PT5SI2 (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT5SI2, type code %, sha256 10c16b80054347fb…

61: PHASE PT5SI2 % 2 0.714 0.286 !
62: CONST PT5SI2 : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PT6SI5 (Pt–Si)

Id: phase:pt-si:pt6si5; status assigned
Structure: Pt6Si5 · mP22 · P2_1/m (11); type st:pt6si5-mp22; tier B: DFT-supported (unique MP + OQMD match); confidence high
Stoichiometry: Pt 0.5455, Si 0.4545
Stability: stable in 1 of 1 calculated diagram(s): 300–1292.73 K, x(Si) 0.45455–0.45455
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:pt-si:pt6si5
mp: mp:mp-aaaabrwv
oqmd: oqmd:oqmd-8038
paper: paper:10.1016/j.calphad.2007.07.010:Pt6Si5
tdb: tdb:PtSi-08Xu.tdb:PT6SI5

TDB models of PT6SI5 (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PT6SI5, type code %, sha256 10c16b80054347fb…

86: PHASE PT6SI5 % 2 6 5 !
87: CONST PT6SI5 : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
cited as the source of values for this phase

PTSI_B31 (Pt–Si)

Id: phase:pt-si:ptsi-b31; status assigned
Structure: MnP · B31 · oP8 · Pnma (62); type st:b31-mnp-op8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaabau and oqmd-2257, space group 62
Stoichiometry: Pt 0.5000, Si 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1504.68 K, x(Si) 0.5–0.5
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:pt-si:ptsi-b31
mp: mp:mp-aaaaabau
oqmd: oqmd:oqmd-2257
paper: paper:10.1016/j.calphad.2007.07.010:PtSi
tdb: tdb:PtSi-08Xu.tdb:PTSI_B31

TDB models of PTSI_B31 (1): PHASE and CONSTITUENT statements as written

PtSi-08Xu.tdb: PTSI_B31, type code %, sha256 10c16b80054347fb…

92: PHASE PTSI_B31 % 2 1 1 !
93: CONST PTSI_B31 : PT : SI : !

Example references (2 of 2; assessments first):

doi:10.1016/j.calphad.2007.07.010 L.L. Xu, J. Wang, H.S. Liu, Z.P. Jin, Thermodynamic assessment of the Pt–Si binary system, Calphad 32, 101-105 (2008).
assessment that models this phase; reports values for this phase
doi:10.1016/0925-8388(93)90888-t R. Massara, P. Feschotte, Le système binaire PtSi, Journal of Alloys and Compounds 201, 223-227 (1993).
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}
}