# Dy–Sn phases

> Dy–Sn system: 13 phases (tier A 7, tier B 1, tier C 1, liquid 1, needs_review 3); 11 stable in a calculated diagram in the ORCHID phase registry, with names, structure type when the stored evidence supports an assignment under the stated tier rules, calculated stability, verbatim TDB PHASE/CONSTITUENT statements and example references.

HTML: https://data.orchid-project.org/phases/pages/DY-SN.html · Markdown: https://data.orchid-project.org/phases/pages/DY-SN.md

13 phases (tier A 7, tier B 1, tier C 1, liquid 1, needs_review 3); 11 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](https://orchid-project.org/phases/?q=DY-SN) · [full JSON](https://data.orchid-project.org/phases/systems/DY-SN.json) · [Dy–Sn system page](https://data.orchid-project.org/systems/DY-SN.html) · [Markdown](https://data.orchid-project.org/phases/pages/DY-SN.md) · [field reference](https://data.orchid-project.org/phases/SCHEMA.md)

Table: Phases of the Dy–Sn system (13)

| Phase | Structure | Basis | Stability (calculated) | Literature values | TDB models |
|---|---|---|---|---:|---:|
| [DIAMOND_A4](#phase-dy-sn-a4-diamond); _phase:dy-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-dy-sn-a5-bct); _phase:dy-sn:a5-bct_ | beta-Sn · A5 · tI4 · I4_1/amd (141) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–505.04 K, x(Sn) 1–1 | 0 | 1 |
| [BCC_A2](#phase-dy-sn-bcc-a2); _phase:dy-sn:bcc-a2_ | W · A2 · cI2 · Im-3m (229) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 1470.22–1723.97 K, x(Sn) 0–0 | 0 | 1 |
| [DY11SN10](#phase-dy-sn-dy11sn10); _phase:dy-sn:dy11sn10_ | Ge10Ho11 · tI84 · I4/mmm (139) | tier B: DFT-supported (unique MP + OQMD match) | stable in 1 of 1 calculated diagram(s): 300–1879.5 K, x(Sn) 0.47619–0.47619 | 5 | 1 |
| [DY4SN5](#phase-dy-sn-dy4sn5); _phase:dy-sn:dy4sn5_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1440.18 K, x(Sn) 0.55556–0.55556 | 5 | 1 |
| [DY5SN3_D88](#phase-dy-sn-dy5sn3-d88); _phase:dy-sn:dy5sn3-d88_ | Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–2139.12 K, x(Sn) 0.375–0.375 | 8 | 1 |
| [DY5SN4](#phase-dy-sn-dy5sn4); _phase:dy-sn:dy5sn4_ | Ge4Sm5 · oP36 · Pnma (62) | tier C: assessor-stated (Hallstedt 2025 crystallographic table) | stable in 1 of 1 calculated diagram(s): 300–1986.95 K, x(Sn) 0.44444–0.44444 | 6 | 1 |
| [DYSN](#phase-dy-sn-dysn); _phase:dy-sn:dysn_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 300–1481.89 K, x(Sn) 0.5–0.5 | 6 | 1 |
| [DYSN2_C49](#phase-dy-sn-dysn2-c49); _phase:dy-sn:dysn2-c49_ | ZrSi2 · C49 · oC12 · Cmcm (63) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1413.54 K, x(Sn) 0.66667–0.66667 | 8 | 1 |
| [DYSN3](#phase-dy-sn-dysn3); _phase:dy-sn:dysn3_ |  | needs_review | stable in 1 of 1 calculated diagram(s): 769.4–1014.16 K, x(Sn) 0.75–0.75 | 6 | 1 |
| [FCC_A1](#phase-dy-sn-fcc-a1); _phase:dy-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-dy-sn-hcp-a3); _phase:dy-sn:hcp-a3_ | Mg · A3 · hP2 · P6_3/mmc (194) | tier A: standard phase name | stable in 1 of 1 calculated diagram(s): 300–1675.22 K, x(Sn) 0–0.04009 | 2 | 1 |
| [LIQUID](#phase-dy-sn-liquid); _phase:dy-sn:liquid_ | liquid | liquid | stable in 1 of 1 calculated diagram(s): 505.04–2500 K, x(Sn) 0–1 | 19 | 1 |

## DIAMOND_A4 (Dy–Sn)

- Id: `phase:dy-sn: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: Sn 1.0000
- Stability: not stable in 1 calculated diagram(s)
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:a4-diamond)

Names (2): _corpus: _corpus:phase:dy-sn:a4-diamond  
_tdb: _tdb:DySn-05Wan.tdb:DIAMOND_A4  


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

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): DIAMOND_A4, type code %, sha256 `da7ac457ff574f49…`

~~~~text
46: PHASE DIAMOND_A4 % 1 1 !
47: CONST DIAMOND_A4 : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase_

## BCT_A5 (Dy–Sn)

- Id: `phase:dy-sn:a5-bct`; status `assigned`
- 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): 300–505.04 K, x(Sn) 1–1
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:a5-bct)

Names (2): _corpus: _corpus:phase:dy-sn:a5-bct  
_tdb: _tdb:DySn-05Wan.tdb:BCT_A5  


### TDB models of BCT_A5 (1): PHASE and CONSTITUENT statements as written

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): BCT_A5, type code %, sha256 `da7ac457ff574f49…`

~~~~text
51: PHASE BCT_A5 % 1 1 !
52: CONST BCT_A5 : SN : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase_

## BCC_A2 (Dy–Sn)

- Id: `phase:dy-sn: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): 1470.22–1723.97 K, x(Sn) 0–0
- Literature: 0 values (0 accepted) from 0 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:bcc-a2)

Names (2): _corpus: _corpus:phase:dy-sn:bcc-a2  
_tdb: _tdb:DySn-05Wan.tdb:BCC_A2  


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

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): BCC_A2, type code %B, sha256 `da7ac457ff574f49…`

~~~~text
36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : DY% SN : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase_

## DY11SN10 (Dy–Sn)

- Id: `phase:dy-sn:dy11sn10`; status `assigned`
- Structure: Ge10Ho11 · tI84 · I4/mmm (139); type `st:ge10ho11-ti84`; tier B: DFT-supported (unique MP + OQMD match); confidence high
- Stoichiometry: Dy 0.5238, Sn 0.4762
- Stability: stable in 1 of 1 calculated diagram(s): 300–1879.5 K, x(Sn) 0.47619–0.47619
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:dy11sn10)

Names (5): _corpus: _corpus:phase:dy-sn:dy11sn10  
_mp: _mp:mp-aaaabthw  
_oqmd: _oqmd:oqmd-89149  
_paper: _paper:10.1016/j.jallcom.2004.12.033:Dy11Sn10  
_tdb: _tdb:DySn-05Wan.tdb:DY11SN10  


### TDB models of DY11SN10 (1): PHASE and CONSTITUENT statements as written

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): DY11SN10, type code %, sha256 `da7ac457ff574f49…`

~~~~text
66: PHASE DY11SN10 % 2 11 10 !
67: CONST DY11SN10 : DY : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_cited as the source of values for this phase_

## DY4SN5 (Dy–Sn)

- Id: `phase:dy-sn:dy4sn5`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (literature_printed): (Dy4Sn5) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (Dy4Sn5) — Hallstedt 2025 mmc2 row for DY4SN5: Dy4Sn5
- Stoichiometry: Dy 0.4444, Sn 0.5556
- Stability: stable in 1 of 1 calculated diagram(s): 300–1440.18 K, x(Sn) 0.55556–0.55556
- Literature: 5 values (5 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:dy4sn5)

Names (3): _corpus: _corpus:phase:dy-sn:dy4sn5  
_paper: _paper:10.1016/j.jallcom.2004.12.033:Dy4Sn5  
_tdb: _tdb:DySn-05Wan.tdb:DY4SN5  


### TDB models of DY4SN5 (1): PHASE and CONSTITUENT statements as written

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): DY4SN5, type code %, sha256 `da7ac457ff574f49…`

~~~~text
76: PHASE DY4SN5 % 2 4 5 !
77: CONST DY4SN5 : DY : SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_cited as the source of values for this phase_

## DY5SN3_D88 (Dy–Sn)

- Id: `phase:dy-sn:dy5sn3-d88`; status `assigned`
- Structure: Mn5Si3 · D8_8 · hP16 · P6_3/mcm (193); type `st:d8-8-mn5si3-hp16`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaabthv and oqmd-31219, space group 193
- Stoichiometry: Dy 0.6250, Sn 0.3750
- Stability: stable in 1 of 1 calculated diagram(s): 300–2139.12 K, x(Sn) 0.375–0.375
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:dy5sn3-d88)

Names (5): _corpus: _corpus:phase:dy-sn:dy5sn3-d88  
_mp: _mp:mp-aaaabthv  
_oqmd: _oqmd:oqmd-31219  
_paper: _paper:10.1016/j.jallcom.2004.12.033:Dy5Sn3  
_tdb: _tdb:DySn-05Wan.tdb:DY5SN3_D88  


### TDB models of DY5SN3_D88 (1): PHASE and CONSTITUENT statements as written

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): DY5SN3_D88, type code %, sha256 `da7ac457ff574f49…`

~~~~text
56: PHASE DY5SN3_D88 % 2 5 3 !
57: CONST DY5SN3_D88 : DY : SN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(84)90313-8](https://doi.org/10.1016/0022-5088%2884%2990313-8) C. Colinet, A. Pasturel, A. Percheron-Guégan, J.C. Achard, Experimental and calculated enthalpies of formation of rare earth-tin alloys, Journal of the Less Common Metals 102, 167-177 (1984).  
_cited as the source of values for this phase_

## DY5SN4 (Dy–Sn)

- Id: `phase:dy-sn:dy5sn4`; status `assigned`
- 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](https://doi.org/10.1016/j.calphad.2025.102833)
- Caveat: not certain from the name or DFT alone (dft_space_group_62_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
- Stoichiometry: Dy 0.5556, Sn 0.4444
- Stability: stable in 1 of 1 calculated diagram(s): 300–1986.95 K, x(Sn) 0.44444–0.44444
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:dy5sn4)

Names (3): _corpus: _corpus:phase:dy-sn:dy5sn4  
_paper: _paper:10.1016/j.jallcom.2004.12.033:Dy5Sn4  
_tdb: _tdb:DySn-05Wan.tdb:DY5SN4  


### TDB models of DY5SN4 (1): PHASE and CONSTITUENT statements as written

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): DY5SN4, type code %, sha256 `da7ac457ff574f49…`

~~~~text
61: PHASE DY5SN4 % 2 5 4 !
62: CONST DY5SN4 : DY : SN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(84)90313-8](https://doi.org/10.1016/0022-5088%2884%2990313-8) C. Colinet, A. Pasturel, A. Percheron-Guégan, J.C. Achard, Experimental and calculated enthalpies of formation of rare earth-tin alloys, Journal of the Less Common Metals 102, 167-177 (1984).  
_cited as the source of values for this phase_

## DYSN (Dy–Sn)

- Id: `phase:dy-sn:dysn`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_row_incomplete
- Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Dy1 Sn1 at x(SN)=0.5000
- Candidate (literature_printed): (DySn) · ? — printed with a label mapped to this phase
- Candidate (sgte_mmc2): (DySn) — Hallstedt 2025 mmc2 row for DYSN: DySn
- Stoichiometry: Dy 0.5000, Sn 0.5000
- Stability: stable in 1 of 1 calculated diagram(s): 300–1481.89 K, x(Sn) 0.5–0.5
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:dysn)

Names (3): _corpus: _corpus:phase:dy-sn:dysn  
_paper: _paper:10.1016/j.jallcom.2004.12.033:DySn  
_tdb: _tdb:DySn-05Wan.tdb:DYSN  


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

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): DYSN, type code %, sha256 `da7ac457ff574f49…`

~~~~text
71: PHASE DYSN % 2 1 1 !
72: CONST DYSN : DY : SN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(84)90313-8](https://doi.org/10.1016/0022-5088%2884%2990313-8) C. Colinet, A. Pasturel, A. Percheron-Guégan, J.C. Achard, Experimental and calculated enthalpies of formation of rare earth-tin alloys, Journal of the Less Common Metals 102, 167-177 (1984).  
_cited as the source of values for this phase_

## DYSN2_C49 (Dy–Sn)

- Id: `phase:dy-sn:dysn2-c49`; status `assigned`
- Structure: ZrSi2 · C49 · oC12 · Cmcm (63); type `st:c49-zrsi2-oc12`; tier A: standard phase name; confidence high
- Caveat: DFT agrees: on-hull mp-aaaabdqb and oqmd-19578, space group 63
- Stoichiometry: Dy 0.3333, Sn 0.6667
- Stability: stable in 1 of 1 calculated diagram(s): 300–1413.54 K, x(Sn) 0.66667–0.66667
- Literature: 8 values (8 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:dysn2-c49)

Names (5): _corpus: _corpus:phase:dy-sn:dysn2-c49  
_mp: _mp:mp-aaaabdqb  
_oqmd: _oqmd:oqmd-19578  
_paper: _paper:10.1016/j.jallcom.2004.12.033:DySn2  
_tdb: _tdb:DySn-05Wan.tdb:DYSN2_C49  


### TDB models of DYSN2_C49 (1): PHASE and CONSTITUENT statements as written

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): DYSN2_C49, type code %, sha256 `da7ac457ff574f49…`

~~~~text
81: PHASE DYSN2_C49 % 2 1 2 !
82: CONST DYSN2_C49 : DY : SN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(84)90313-8](https://doi.org/10.1016/0022-5088%2884%2990313-8) C. Colinet, A. Pasturel, A. Percheron-Guégan, J.C. Achard, Experimental and calculated enthalpies of formation of rare earth-tin alloys, Journal of the Less Common Metals 102, 167-177 (1984).  
_cited as the source of values for this phase_

## DYSN3 (Dy–Sn)

- Id: `phase:dy-sn:dysn3`; status `needs_review`
- No structure assigned. Why: no_on_hull_entry_in_mp; no_structure_token; sgte_mmc2_rows_disagree
- Candidate (dft_oqmd): Cmcm (63) — on-hull OQMD Dy1 Sn3 at x(SN)=0.7500
- Candidate (literature_printed): AuCu3 · cP4 — printed with a label mapped to this phase
- Candidate (sgte_mmc2): DyGe3 · oC16 · Cmcm (63) — Hallstedt 2025 mmc2 row for DYSN3: DySn3 (and/or AuCu3)
- Candidate (sgte_mmc2): AuCu3 · L1_2 · cP4 · Pm-3m (221) — Hallstedt 2025 mmc2 row for DYSN3: DySn3 (and/or DyGe3)
- Candidate (tdb_comment): DyGe3 · oC16 · Cmcm — DySn-05Wan.tdb: 'Prototype DyGe3 (oC16, Cmcm) and/or AuCu3 (cP4, Pm-3m)'
- Stoichiometry: Dy 0.2500, Sn 0.7500
- Stability: stable in 1 of 1 calculated diagram(s): 769.4–1014.16 K, x(Sn) 0.75–0.75
- Literature: 6 values (6 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:dysn3)

Names (3): _corpus: _corpus:phase:dy-sn:dysn3  
_paper: _paper:10.1016/j.jallcom.2004.12.033:DySn3  
_tdb: _tdb:DySn-05Wan.tdb:DYSN3  


### TDB models of DYSN3 (1): PHASE and CONSTITUENT statements as written

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): DYSN3, type code %, sha256 `da7ac457ff574f49…`

~~~~text
86: PHASE DYSN3 % 2 1 3 !
87: CONST DYSN3 : DY : SN : !
~~~~

Example references (3 of 3; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_cited as the source of values for this phase_
- [doi:10.1016/0022-5088(84)90313-8](https://doi.org/10.1016/0022-5088%2884%2990313-8) C. Colinet, A. Pasturel, A. Percheron-Guégan, J.C. Achard, Experimental and calculated enthalpies of formation of rare earth-tin alloys, Journal of the Less Common Metals 102, 167-177 (1984).  
_cited as the source of values for this phase_

## FCC_A1 (Dy–Sn)

- Id: `phase:dy-sn:fcc-a1`; status `assigned`
- 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](https://orchid-project.org/phases/#phase:dy-sn:fcc-a1)

Names (2): _corpus: _corpus:phase:dy-sn:fcc-a1  
_tdb: _tdb:DySn-05Wan.tdb:FCC_A1  


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

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): FCC_A1, type code %A, sha256 `da7ac457ff574f49…`

~~~~text
31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : DY SN : VA : !
~~~~

Example references (1 of 1; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase_

## HCP_A3 (Dy–Sn)

- Id: `phase:dy-sn: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: stable in 1 of 1 calculated diagram(s): 300–1675.22 K, x(Sn) 0–0.04009
- Literature: 2 values (2 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:hcp-a3)

Names (3): _corpus: _corpus:phase:dy-sn:hcp-a3  
_paper: _paper:10.1016/j.jallcom.2004.12.033:α-Dy  
_tdb: _tdb:DySn-05Wan.tdb:HCP_A3  


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

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): HCP_A3, type code %A, sha256 `da7ac457ff574f49…`

~~~~text
41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : DY% SN : VA : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_cited as the source of values for this phase_

## LIQUID (Dy–Sn)

- Id: `phase:dy-sn:liquid`; status `assigned`
- Structure: liquid; type `st:liquid`; liquid; confidence high
- Stability: stable in 1 of 1 calculated diagram(s): 505.04–2500 K, x(Sn) 0–1
- Literature: 19 values (19 accepted) from 1 papers
- Interactive: [phase registry entry](https://orchid-project.org/phases/#phase:dy-sn:liquid)

Names (4): _corpus: _corpus:phase:dy-sn:liquid  
_paper: _paper:10.1016/j.jallcom.2004.12.033:Liq., paper:10.1016/j.jallcom.2004.12.033:liquid  
_tdb: _tdb:DySn-05Wan.tdb:LIQUID  


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

[DySn-05Wan.tdb](https://orchid-project.org/data/databases/sgte-binary/DySn-05Wan.tdb): LIQUID, type code %, sha256 `da7ac457ff574f49…`

~~~~text
26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : DY SN : !
~~~~

Example references (2 of 2; assessments first): 

- [doi:10.1016/j.jallcom.2004.12.033](https://doi.org/10.1016/j.jallcom.2004.12.033) Xinming Wang, Xuping Su, J.C. Tedenac, Fucheng Yin, Jianhua Wang, A thermodynamic assessment of the Dy–Sn system, Journal of Alloys and Compounds 396, 169-174 (2005).  
_assessment that models this phase; reports values for this phase_
- [doi:10.1016/0925-8388(92)90712-i](https://doi.org/10.1016/0925-8388%2892%2990712-i) V.N. Eremenko, M.V. Bulanova, P.S. Martsenjuk, The dysprosium-tin phase diagram, Journal of Alloys and Compounds 189, 229-233 (1992).  
_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). https://doi.org/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). https://doi.org/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.

```bibtex
@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}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite the ORCHID phase registry and the sources named on the page (TDB assessments, Hallstedt 2025, Materials Project, OQMD). TDB statements are quoted as written; parameter expressions are not reproduced. Field reference: [SCHEMA.md](https://data.orchid-project.org/phases/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt).