Sc–Sn phases
11 phases (tier A 6, tier C 2, liquid 1, needs_review 2); 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 · Sc–Sn system page · Markdown · field reference
| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---|---|
| DIAMOND_A4 phase:sc-sn:a4-diamond | C (diamond) · A4 · cF8 · Fd-3m (227) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| BCT_A5 phase:sc-sn:a5-bct | beta-Sn · A5 · tI4 · I4_1/amd (141) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–504.71 K, x(Sn) 1–1 | 2 | 1 |
| BCC_A2 phase:sc-sn:bcc-a2 | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1443.01–1817.97 K, x(Sn) 0–0.06751 | 0 | 1 |
| FCC_A1 phase:sc-sn:fcc-a1 | Cu · A1 · cF4 · Fm-3m (225) | tier A: standard phase name | not stable in 1 calculated diagram(s) | 0 | 1 |
| HCP_A3 phase:sc-sn:hcp-a3 | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1607.99 K, x(Sn) 0–0.04683 | 2 | 1 |
| LIQUID phase:sc-sn:liquid | liquid | liquid | stable in 1 of 1 calculated diagram(s): 504.71–2500 K, x(Sn) 0–1 | 16 | 1 |
| SC11SN10 phase:sc-sn:sc11sn10 | needs_review | stable in 1 of 1 calculated diagram(s): 300–1225.79 K, x(Sn) 0.47619–0.47619 | 8 | 1 | |
| SC5SN3_HT phase:sc-sn:sc5sn3 | needs_review | stable in 1 of 1 calculated diagram(s): 1916.67–2069.24 K, x(Sn) 0.375–0.375 | 5 | 1 | |
| SC5SN3_D88 phase:sc-sn:sc5sn3-d88 | Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1916.67 K, x(Sn) 0.375–0.375 | 7 | 1 |
| SC6SN5 phase:sc-sn:sc6sn5 | Si5V6 · oI44 · Ibam (72) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1643.94 K, x(Sn) 0.45455–0.45455 | 8 | 1 |
| SCSN2 phase:sc-sn:scsn2 | ScSn2 · tI24 · I4_1/amd (141) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1146.67 K, x(Sn) 0.66667–0.66667 | 7 | 1 |
DIAMOND_A4 (Sc–Sn)
- Id:
phase:sc-sn: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: Sn 1.0000
- 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:sc-sn:a4-diamond
tdb: tdb:ScSn-13Idd.tdb:DIAMOND_A4
TDB models of DIAMOND_A4 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: DIAMOND_A4, type code %, sha256 a0ba1a0cb0016f10…
52: PHASE DIAMOND_A4 % 1 1 ! 53: CONST DIAMOND_A4 : SN : !
Example references (1 of 1; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase
BCT_A5 (Sc–Sn)
- Id:
phase:sc-sn:a5-bct; statusassigned - Structure: beta-Sn · A5 · tI4 · I4_1/amd (141); type
st:a5-beta-sn-ti4; tier A: standard phase name; confidence high - Stoichiometry: Sn 1.0000
- Stability: stable in 1 of 1 calculated diagram(s): 300–504.71 K, x(Sn) 1–1
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:sc-sn:a5-bct
paper: paper:10.1016/j.calphad.2013.01.006:Sn
tdb: tdb:ScSn-13Idd.tdb:BCT_A5
TDB models of BCT_A5 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: BCT_A5, type code %, sha256 a0ba1a0cb0016f10…
57: PHASE BCT_A5 % 1 1 ! 58: CONST BCT_A5 : SN : !
Example references (2 of 2; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase; reports values for this phase - doi:10.1016/0925-8388(94)06014-2 A. Palenzona, P. Manfrinetti, The phase diagrams of the ScSn and ScPb systems, Journal of Alloys and Compounds 220, 157-160 (1995).
cited as the source of values for this phase
BCC_A2 (Sc–Sn)
- Id:
phase:sc-sn: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): 1443.01–1817.97 K, x(Sn) 0–0.06751
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: phase registry entry
Names (2): corpus: corpus:phase:sc-sn:bcc-a2
tdb: tdb:ScSn-13Idd.tdb:BCC_A2
TDB models of BCC_A2 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: BCC_A2, type code %B, sha256 a0ba1a0cb0016f10…
42: PHASE BCC_A2 %B 2 1 3 ! 43: CONST BCC_A2 : SC% SN : VA : !
Example references (1 of 1; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase
FCC_A1 (Sc–Sn)
- Id:
phase:sc-sn:fcc-a1; statusassigned - Structure: Cu · A1 · cF4 · Fm-3m (225); type
st:a1-cu-cf4; tier A: standard phase name; confidence high - Stability: not stable in 1 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: phase registry entry
Names (2): corpus: corpus:phase:sc-sn:fcc-a1
tdb: tdb:ScSn-13Idd.tdb:FCC_A1
TDB models of FCC_A1 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: FCC_A1, type code %A, sha256 a0ba1a0cb0016f10…
37: PHASE FCC_A1 %A 2 1 1 ! 38: CONST FCC_A1 : SC SN : VA : !
Example references (1 of 1; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase
HCP_A3 (Sc–Sn)
- Id:
phase:sc-sn:hcp-a3; statusassigned - Structure: Mg · A3 · hP2 · P6_3/mmc (194); type
st:a3-mg-hp2; tier A: standard phase name; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 300–1607.99 K, x(Sn) 0–0.04683
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:sc-sn:hcp-a3
paper: paper:10.1016/j.calphad.2013.01.006:Sc
tdb: tdb:ScSn-13Idd.tdb:HCP_A3
TDB models of HCP_A3 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: HCP_A3, type code %A, sha256 a0ba1a0cb0016f10…
47: PHASE HCP_A3 %A 2 1 0.5 ! 48: CONST HCP_A3 : SC% SN : VA : !
Example references (2 of 2; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase; reports values for this phase - doi:10.1007/s11106-006-0010-4 O. V. Podarevskaya, V. G. Kudin, V. S. Zubchenko, V. S. Sudavtsova, Phase Diagram of the Scandium - Tin System, Powder Metall Met Ceram 44, 463-466 (2005).
cited as the source of values for this phase
LIQUID (Sc–Sn)
- Id:
phase:sc-sn:liquid; statusassigned - Structure: liquid; type
st:liquid; liquid; confidence high - Stability: stable in 1 of 1 calculated diagram(s): 504.71–2500 K, x(Sn) 0–1
- Literature: 16 values (16 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:sc-sn:liquid
paper: paper:10.1016/j.calphad.2013.01.006:Liq
tdb: tdb:ScSn-13Idd.tdb:LIQUID
TDB models of LIQUID (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: LIQUID, type code %, sha256 a0ba1a0cb0016f10…
32: PHASE LIQUID:L % 1 1 ! 33: CONST LIQUID:L : SC SN : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase; reports values for this phase - doi:10.1007/s11106-006-0010-4 O. V. Podarevskaya, V. G. Kudin, V. S. Zubchenko, V. S. Sudavtsova, Phase Diagram of the Scandium - Tin System, Powder Metall Met Ceram 44, 463-466 (2005).
cited as the source of values for this phase - doi:10.1016/0925-8388(94)06014-2 A. Palenzona, P. Manfrinetti, The phase diagrams of the ScSn and ScPb systems, Journal of Alloys and Compounds 220, 157-160 (1995).
cited as the source of values for this phase
SC11SN10 (Sc–Sn)
- Id:
phase:sc-sn:sc11sn10; statusneeds_review - No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Sc11Sn10) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Sc11Sn10) — Hallstedt 2025 mmc2 row for SC11SN10: Sc11Sn10
- Stoichiometry: Sc 0.5238, Sn 0.4762
- Stability: stable in 1 of 1 calculated diagram(s): 300–1225.79 K, x(Sn) 0.47619–0.47619
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:sc-sn:sc11sn10
paper: paper:10.1016/j.calphad.2013.01.006:Sc11Sn10
tdb: tdb:ScSn-13Idd.tdb:SC11SN10
TDB models of SC11SN10 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: SC11SN10, type code %, sha256 a0ba1a0cb0016f10…
77: PHASE SC11SN10 % 2 11 10 ! 78: CONST SC11SN10 : SC : SN : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase; reports values for this phase - doi:10.1007/s11106-006-0010-4 O. V. Podarevskaya, V. G. Kudin, V. S. Zubchenko, V. S. Sudavtsova, Phase Diagram of the Scandium - Tin System, Powder Metall Met Ceram 44, 463-466 (2005).
cited as the source of values for this phase - doi:10.1016/0925-8388(94)06014-2 A. Palenzona, P. Manfrinetti, The phase diagrams of the ScSn and ScPb systems, Journal of Alloys and Compounds 220, 157-160 (1995).
cited as the source of values for this phase
SC5SN3_HT (Sc–Sn)
- Id:
phase:sc-sn:sc5sn3; statusneeds_review - No structure assigned. Why: no_structure_token; polymorph_family:other phases of this system have the same composition; sgte_mmc2_row_incomplete
- Candidate (dft_mp): P6_3/mcm (193) — on-hull MP Sc5Sn3 at x(SN)=0.3750
- Candidate (dft_oqmd): P63/mcm (193) — on-hull OQMD Sc5 Sn3 at x(SN)=0.3750
- Candidate (literature_printed): (Sc5Sn3-ht) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Sc5Sn3-ht) — Hallstedt 2025 mmc2 row for SC5SN3_HT: Sc3Sn5 (high T)
- Stoichiometry: Sc 0.6250, Sn 0.3750
- Stability: stable in 1 of 1 calculated diagram(s): 1916.67–2069.24 K, x(Sn) 0.375–0.375
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:sc-sn:sc5sn3
paper: paper:10.1016/j.calphad.2013.01.006:β-Sc5Sn3
tdb: tdb:ScSn-13Idd.tdb:SC5SN3_HT
TDB models of SC5SN3_HT (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: SC5SN3_HT, type code %, sha256 a0ba1a0cb0016f10…
67: PHASE SC5SN3_HT % 2 5 3 ! 68: CONST SC5SN3_HT : SC : SN : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase; reports values for this phase - doi:10.1007/s11106-006-0010-4 O. V. Podarevskaya, V. G. Kudin, V. S. Zubchenko, V. S. Sudavtsova, Phase Diagram of the Scandium - Tin System, Powder Metall Met Ceram 44, 463-466 (2005).
cited as the source of values for this phase - doi:10.1016/0925-8388(94)06014-2 A. Palenzona, P. Manfrinetti, The phase diagrams of the ScSn and ScPb systems, Journal of Alloys and Compounds 220, 157-160 (1995).
cited as the source of values for this phase
SC5SN3_D88 (Sc–Sn)
- Id:
phase:sc-sn:sc5sn3-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: Sc 0.6250, Sn 0.3750
- Stability: stable in 1 of 1 calculated diagram(s): 300–1916.67 K, x(Sn) 0.375–0.375
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:sc-sn:sc5sn3-d88
paper: paper:10.1016/j.calphad.2013.01.006:α-Sc5Sn3
tdb: tdb:ScSn-13Idd.tdb:SC5SN3_D88
TDB models of SC5SN3_D88 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: SC5SN3_D88, type code %, sha256 a0ba1a0cb0016f10…
62: PHASE SC5SN3_D88 % 2 5 3 ! 63: CONST SC5SN3_D88 : SC : SN : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase; reports values for this phase - doi:10.1007/s11106-006-0010-4 O. V. Podarevskaya, V. G. Kudin, V. S. Zubchenko, V. S. Sudavtsova, Phase Diagram of the Scandium - Tin System, Powder Metall Met Ceram 44, 463-466 (2005).
cited as the source of values for this phase - doi:10.1016/0925-8388(94)06014-2 A. Palenzona, P. Manfrinetti, The phase diagrams of the ScSn and ScPb systems, Journal of Alloys and Compounds 220, 157-160 (1995).
cited as the source of values for this phase
SC6SN5 (Sc–Sn)
- Id:
phase:sc-sn:sc6sn5; statusassigned - Structure: Si5V6 · oI44 · Ibam (72); type
st:si5v6-oi44; 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_oqmd, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Sc 0.5455, Sn 0.4545
- Stability: stable in 1 of 1 calculated diagram(s): 300–1643.94 K, x(Sn) 0.45455–0.45455
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:sc-sn:sc6sn5
paper: paper:10.1016/j.calphad.2013.01.006:Sc6Sn5
tdb: tdb:ScSn-13Idd.tdb:SC6SN5
TDB models of SC6SN5 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: SC6SN5, type code %, sha256 a0ba1a0cb0016f10…
72: PHASE SC6SN5 % 2 6 5 ! 73: CONST SC6SN5 : SC : SN : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase; reports values for this phase - doi:10.1007/s11106-006-0010-4 O. V. Podarevskaya, V. G. Kudin, V. S. Zubchenko, V. S. Sudavtsova, Phase Diagram of the Scandium - Tin System, Powder Metall Met Ceram 44, 463-466 (2005).
cited as the source of values for this phase - doi:10.1016/0925-8388(94)06014-2 A. Palenzona, P. Manfrinetti, The phase diagrams of the ScSn and ScPb systems, Journal of Alloys and Compounds 220, 157-160 (1995).
cited as the source of values for this phase
SCSN2 (Sc–Sn)
- Id:
phase:sc-sn:scsn2; statusassigned - Structure: ScSn2 · tI24 · I4_1/amd (141); type
st:scsn2-ti24; 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 (dft_space_group_141_matches_5_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Sc 0.3333, Sn 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–1146.67 K, x(Sn) 0.66667–0.66667
- Literature: 7 values (7 accepted) from 1 papers
- Interactive: phase registry entry
Names (3): corpus: corpus:phase:sc-sn:scsn2
paper: paper:10.1016/j.calphad.2013.01.006:ScSn2
tdb: tdb:ScSn-13Idd.tdb:SCSN2
TDB models of SCSN2 (1): PHASE and CONSTITUENT statements as written
ScSn-13Idd.tdb: SCSN2, type code %, sha256 a0ba1a0cb0016f10…
82: PHASE SCSN2 % 2 1 2 ! 83: CONST SCSN2 : SC : SN : !
Example references (3 of 3; assessments first):
- doi:10.1016/j.calphad.2013.01.006 A. Iddaoudi, N. Selhaoui, M. Ait Amar, S. Kardellass, R. Karioui, L. Bouirden, Thermodynamic assessment of the Sc–Sn system, Calphad 41, 71-75 (2013).
assessment that models this phase; reports values for this phase - doi:10.1016/0925-8388(94)06014-2 A. Palenzona, P. Manfrinetti, The phase diagrams of the ScSn and ScPb systems, Journal of Alloys and Compounds 220, 157-160 (1995).
cited as the source of values for this phase - doi:10.1007/s11106-006-0010-4 O. V. Podarevskaya, V. G. Kudin, V. S. Zubchenko, V. S. Sudavtsova, Phase Diagram of the Scandium - Tin System, Powder Metall Met Ceram 44, 463-466 (2005).
cited as the source of values for this phase