Si–Yb phases
11 phases (tier A 6, tier C 2, 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 · Si–Yb system page · Markdown · field reference
| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---|---|
| DIAMOND_A4 phase:si-yb:a4-diamond | C (diamond) · A4 · cF8 · Fd-3m (227) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1689.32 K, x(Yb) 0–0 | 7 | 1 |
| BCC_A2 phase:si-yb:bcc-a2 | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1033–2499.95 K, x(Yb) 1–1 | 2 | 1 |
| FCC_A1 phase:si-yb:fcc-a1 | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1033 K, x(Yb) 1–1 | 0 | 1 |
| HCP_A3 phase:si-yb: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:si-yb:liquid | liquid | liquid | stable in 1 of 1 calculated diagram(s): 1096.2–2500 K, x(Yb) 0–1 | 48 | 1 |
| SI11YB8 phase:si-yb:si11yb8 | needs_review | stable in 1 of 1 calculated diagram(s): 300–1257.13 K, x(Yb) 0.42105–0.42105 | 6 | 1 | |
| SI2YB_C32 phase:si-yb:si2yb-c32 | needs_review | stable in 1 of 1 calculated diagram(s): 1034.45–1676.97 K, x(Yb) 0.36496–0.36496 | 16 | 1 | |
| SI3YB5_D88 phase:si-yb:si3yb5-d88 | Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1890.67 K, x(Yb) 0.625–0.625 | 4 | 1 |
| SI4YB5 phase:si-yb:si4yb5 | Ge4Sm5 · oP36 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1939.13 K, x(Yb) 0.55556–0.55556 | 4 | 1 |
| SI5YB3 phase:si-yb:si5yb3 | Pd5Th3 · hP8 · P-62m (189) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1241.98 K, x(Yb) 0.375–0.375 | 7 | 1 |
| SIYB_B27 phase:si-yb:siyb-b27 | FeB · B27 · oP8 · Pnma (62) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1960.77 K, x(Yb) 0.5–0.5 | 10 | 1 |
DIAMOND_A4 (Si–Yb)
- Id:
phase:si-yb:a4-diamond; statusassigned - 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): 300–1689.32 K, x(Yb) 0–0
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: phase registry entry
Names (4): corpus: corpus:phase:si-yb:a4-diamond, corpus:phase:si-yb:diamond-a4
paper: paper:10.1016/j.calphad.2005.06.004:Si
tdb: tdb:SiYb-05Bru.tdb:DIAMOND_A4
TDB models of DIAMOND_A4 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: DIAMOND_A4, type code %, sha256 69e87e54956cef3f…
45: PHASE DIAMOND_A4 % 1 1 ! 46: CONST DIAMOND_A4 : SI : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase - doi:10.1006/jssc.2001.9390 A. Grytsiv, D. Kaczorowski, A. Leithe-Jasper, V.H. Tran, A. Pikul, P. Rogl et al., On the System Silicon–Ytterbium: Constitution, Crystal Chemistry, and Physical Properties, Journal of Solid State Chemistry 163, 178-185 (2002).
cited as the source of values for this phase - doi:10.1016/s0966-9795(03)00152-3 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, P. Manfrinetti, A. Palenzona, Thermochemistry of ytterbium silicides, Intermetallics 11, 1153-1159 (2003).
cited as the source of values for this phase
BCC_A2 (Si–Yb)
- Id:
phase:si-yb:bcc-a2; statusassigned - 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): 1033–2499.95 K, x(Yb) 1–1
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:si-yb:bcc-a2
paper: paper:10.1016/j.calphad.2005.06.004:Yb(bcc)
tdb: tdb:SiYb-05Bru.tdb:BCC_A2
TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: BCC_A2, type code %B, sha256 69e87e54956cef3f…
35: PHASE BCC_A2 %B 2 1 3 ! 36: CONST BCC_A2 : SI YB% : VA : !
Example references (1 of 1; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase
FCC_A1 (Si–Yb)
- Id:
phase:si-yb:fcc-a1; statusassigned - 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): 300–1033 K, x(Yb) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: phase registry entry
Names (2): corpus: corpus:phase:si-yb:fcc-a1
tdb: tdb:SiYb-05Bru.tdb:FCC_A1
TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: FCC_A1, type code %A, sha256 69e87e54956cef3f…
30: PHASE FCC_A1 %A 2 1 1 ! 31: CONST FCC_A1 : SI YB% : VA : !
Example references (1 of 1; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase
HCP_A3 (Si–Yb)
- Id:
phase:si-yb:hcp-a3; statusassigned - 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:si-yb:hcp-a3
tdb: tdb:SiYb-05Bru.tdb:HCP_A3
TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: HCP_A3, type code %A, sha256 69e87e54956cef3f…
40: PHASE HCP_A3 %A 2 1 0.5 ! 41: CONST HCP_A3 : SI YB : VA: !
Example references (1 of 1; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase
LIQUID (Si–Yb)
- Id:
phase:si-yb:liquid; statusassigned - Structure: liquid; type
st:liquid; liquid; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 1096.2–2500 K, x(Yb) 0–1
- Literature: 48 values (48 accepted) from 1 papers
- Interactive: phase registry entry
Names (5): corpus: corpus:phase:si-yb:liquid
paper: paper:10.1016/j.calphad.2005.06.004:L, paper:10.1016/j.calphad.2005.06.004:liquid, paper:10.1016/j.calphad.2005.06.004:liquid solution
tdb: tdb:SiYb-05Bru.tdb:LIQUID
TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: LIQUID, type code %, sha256 69e87e54956cef3f…
25: PHASE LIQUID:L % 1 1 ! 26: CONST LIQUID:L : SI YB : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase - doi:10.1006/jssc.2001.9390 A. Grytsiv, D. Kaczorowski, A. Leithe-Jasper, V.H. Tran, A. Pikul, P. Rogl et al., On the System Silicon–Ytterbium: Constitution, Crystal Chemistry, and Physical Properties, Journal of Solid State Chemistry 163, 178-185 (2002).
cited as the source of values for this phase - doi:10.1016/j.optmat.2004.08.040 Zhengxin Liu, Masato Osamura, Teruhisa Ootsuka, Shinan Wang, Yasuhiro Fukuzawa, Yasuhito Suzuki et al., Doping of β-FeSi2 films with boron and arsenic by sputtering and its application for optoelectronic devices, Optical Materials 27, 942-947 (2005).
cited as the source of values for this phase
SI11YB8 (Si–Yb)
- Id:
phase:si-yb:si11yb8; statusneeds_review - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): Si11Yb8 · oI38 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): Si11Yb8 · oI38 — Hallstedt 2025 mmc2 row for SI11YB8: Si11Yb8
- Candidate (tdb_comment): — SiYb-05Bru.tdb: 'Prototype Si11Yb8 (oI38)'
- Stoichiometry: Si 0.5789, Yb 0.4211
- Stability: stable in 1 of 1 calculated diagram(s): 300–1257.13 K, x(Yb) 0.42105–0.42105
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:si-yb:si11yb8
paper: paper:10.1016/j.calphad.2005.06.004:Yb8Si11
tdb: tdb:SiYb-05Bru.tdb:SI11YB8
TDB models of SI11YB8 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: SI11YB8, type code %, sha256 69e87e54956cef3f…
65: PHASE SI11YB8 % 2 11 8 ! 66: CONST SI11YB8 : SI : YB : !
Example references (2 of 2; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase - doi:10.1016/s0966-9795(03)00152-3 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, P. Manfrinetti, A. Palenzona, Thermochemistry of ytterbium silicides, Intermetallics 11, 1153-1159 (2003).
cited as the source of values for this phase
SI2YB_C32 (Si–Yb)
- Id:
phase:si-yb:si2yb-c32; statusneeds_review - No structure assigned. Why: assessment_declared_blocked_by:stoichiometry_contradicts_C32; stoichiometry_contradicts_C32:SiYb-05Bru.tdb
- Candidate (literature_printed): AlB2 · hP3 — printed with a label mapped to this phase
- Candidate (name_token): AlB2 · C32 · hP3 · P6/mmm (191) — Strukturbericht/word 'C32' in the TDB name
- Candidate (sgte_mmc2): AlB2 · C32 · hP3 · P6/mmm (191) — Hallstedt 2025 mmc2 row for SI2YB_C32: Si1.74Yb
- Candidate (tdb_comment): AlB2 · hP3 · P6/mmm — SiYb-05Bru.tdb: 'Prototype AlB2 (hP3, P6/mmm), Si1.74Yb'
- Stoichiometry: Si 0.6350, Yb 0.3650
- Stability: stable in 1 of 1 calculated diagram(s): 1034.45–1676.97 K, x(Yb) 0.36496–0.36496
- Literature: 16 values (16 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:si-yb:si2yb-c32
paper: paper:10.1016/j.calphad.2005.06.004:YbSi1.74
tdb: tdb:SiYb-05Bru.tdb:SI2YB_C32
TDB models of SI2YB_C32 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: SI2YB_C32, type code %, sha256 69e87e54956cef3f…
75: PHASE SI2YB_C32 % 2 1.74 1 ! 76: CONST SI2YB_C32 : SI : YB : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase - doi:10.1006/jssc.2001.9390 A. Grytsiv, D. Kaczorowski, A. Leithe-Jasper, V.H. Tran, A. Pikul, P. Rogl et al., On the System Silicon–Ytterbium: Constitution, Crystal Chemistry, and Physical Properties, Journal of Solid State Chemistry 163, 178-185 (2002).
cited as the source of values for this phase - doi:10.1016/s0966-9795(03)00152-3 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, P. Manfrinetti, A. Palenzona, Thermochemistry of ytterbium silicides, Intermetallics 11, 1153-1159 (2003).
cited as the source of values for this phase
SI3YB5_D88 (Si–Yb)
- Id:
phase:si-yb:si3yb5-d88; statusassigned - Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type
st:d8-8-mn5si3-hp16; tier A: standard phase name; confidence high - Stoichiometry: Si 0.3750, Yb 0.6250
- Stability: stable in 1 of 1 calculated diagram(s): 300–1890.67 K, x(Yb) 0.625–0.625
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:si-yb:si3yb5-d88
paper: paper:10.1016/j.calphad.2005.06.004:Yb5Si3
tdb: tdb:SiYb-05Bru.tdb:SI3YB5_D88
TDB models of SI3YB5_D88 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: SI3YB5_D88, type code %, sha256 69e87e54956cef3f…
50: PHASE SI3YB5_D88 % 2 3 5 ! 51: CONST SI3YB5_D88 : SI : YB : !
Example references (1 of 1; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase
SI4YB5 (Si–Yb)
- Id:
phase:si-yb:si4yb5; statusassigned - Structure: Ge4Sm5 · oP36 · Pnma (62); type
st:ge4sm5-op36; 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: Si 0.4444, Yb 0.5556
- Stability: stable in 1 of 1 calculated diagram(s): 300–1939.13 K, x(Yb) 0.55556–0.55556
- Literature: 4 values (4 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:si-yb:si4yb5
paper: paper:10.1016/j.calphad.2005.06.004:Yb5Si4
tdb: tdb:SiYb-05Bru.tdb:SI4YB5
TDB models of SI4YB5 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: SI4YB5, type code %, sha256 69e87e54956cef3f…
55: PHASE SI4YB5 % 2 4 5 ! 56: CONST SI4YB5 : SI : YB : !
Example references (1 of 1; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase
SI5YB3 (Si–Yb)
- Id:
phase:si-yb:si5yb3; statusassigned - Structure: Pd5Th3 · hP8 · P-62m (189); type
st:pd5th3-hp8; 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: Si 0.6250, Yb 0.3750
- Stability: stable in 1 of 1 calculated diagram(s): 300–1241.98 K, x(Yb) 0.375–0.375
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:si-yb:si5yb3
paper: paper:10.1016/j.calphad.2005.06.004:Yb3Si5
tdb: tdb:SiYb-05Bru.tdb:SI5YB3
TDB models of SI5YB3 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: SI5YB3, type code %, sha256 69e87e54956cef3f…
70: PHASE SI5YB3 % 2 5 3 ! 71: CONST SI5YB3 : SI : YB : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase - doi:10.1016/s0966-9795(03)00152-3 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, P. Manfrinetti, A. Palenzona, Thermochemistry of ytterbium silicides, Intermetallics 11, 1153-1159 (2003).
cited as the source of values for this phase - doi:10.1006/jssc.2001.9390 A. Grytsiv, D. Kaczorowski, A. Leithe-Jasper, V.H. Tran, A. Pikul, P. Rogl et al., On the System Silicon–Ytterbium: Constitution, Crystal Chemistry, and Physical Properties, Journal of Solid State Chemistry 163, 178-185 (2002).
cited as the source of values for this phase
SIYB_B27 (Si–Yb)
- Id:
phase:si-yb:siyb-b27; statusassigned - Structure: FeB · B27 · oP8 · Pnma (62); type
st:b27-feb-op8; tier A: standard phase name; confidence high - Stoichiometry: Si 0.5000, Yb 0.5000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1960.77 K, x(Yb) 0.5–0.5
- Literature: 10 values (10 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:si-yb:siyb-b27
paper: paper:10.1016/j.calphad.2005.06.004:YbSi
tdb: tdb:SiYb-05Bru.tdb:SIYB_B27
TDB models of SIYB_B27 (1): PHASE and CONSTITUENT statements as written
SiYb-05Bru.tdb: SIYB_B27, type code %, sha256 69e87e54956cef3f…
60: PHASE SIYB_B27 % 2 1 1 ! 61: CONST SIYB_B27 : SI : YB : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2005.06.004 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, Thermodynamic assessment of the Yb–Si system, Calphad 29, 254-261 (2005).
assessment that models this phase; reports values for this phase - doi:10.1006/jssc.2001.9390 A. Grytsiv, D. Kaczorowski, A. Leithe-Jasper, V.H. Tran, A. Pikul, P. Rogl et al., On the System Silicon–Ytterbium: Constitution, Crystal Chemistry, and Physical Properties, Journal of Solid State Chemistry 163, 178-185 (2002).
cited as the source of values for this phase - doi:10.1016/s0966-9795(03)00152-3 S. Brutti, G. Balducci, A. Ciccioli, G. Gigli, P. Manfrinetti, A. Palenzona, Thermochemistry of ytterbium silicides, Intermetallics 11, 1153-1159 (2003).
cited as the source of values for this phase