Eu–Sn phases

9 phases (tier A 7, tier C 1, liquid 1); 8 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 · Eu–Sn system page · Markdown · field reference

Phases of the Eu–Sn system (9)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
DIAMOND_A4 phase:eu-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:eu-sn:a5-bct	beta-Sn · A5 · tI4 · I4_1/amd (141)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–505.08 K, x(Sn) 1–1	3	1
BCC_A2 phase:eu-sn:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1115 K, x(Sn) 0–0.0007	3	1
EU2SN_C37 phase:eu-sn:eu2sn-c37	Co2Si · C37 · oP12 · Pnma (62)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1628.16 K, x(Sn) 0.33333–0.33333	8	1
EU3SN5 phase:eu-sn:eu3sn5	Pd5Pu3 · oC32 · Cmcm (63)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1170.98 K, x(Sn) 0.625–0.625	6	1
EU5SN3_D8M phase:eu-sn:eu5sn3-d8m	W5Si3 · D8_m · tI32 · I4/mcm (140)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1396.02 K, x(Sn) 0.375–0.375	6	1
EUSN_B33 phase:eu-sn:eusn-b33	CrB · B33 · oC8 · Cmcm (63)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1394.66 K, x(Sn) 0.5–0.5	8	1
EUSN3_L12 phase:eu-sn:eusn3-l12	AuCu3 · L1_2 · cP4 · Pm-3m (221)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1068.67 K, x(Sn) 0.75–0.75	8	1
LIQUID phase:eu-sn:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 501.58–2500 K, x(Sn) 0–1	24	1

DIAMOND_A4 (Eu–Sn)

Id: phase:eu-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

Names (2): corpus: corpus:phase:eu-sn:a4-diamond
tdb: tdb:EuSn-04Liu-LB.tdb:DIAMOND_A4

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

EuSn-04Liu-LB.tdb: DIAMOND_A4, type code %, sha256 f031ab43145b765a…

30: PHASE DIAMOND_A4 % 1 1 !
31: CONST DIAMOND_A4 : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase

BCT_A5 (Eu–Sn)

Id: phase:eu-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): 300–505.08 K, x(Sn) 1–1
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:eu-sn:a5-bct, corpus:phase:eu-sn:bct-a5
paper: paper:10.1016/j.jallcom.2004.02.012:(bct)Sn, paper:10.1016/j.jallcom.2004.02.012:Sn(bct)
tdb: tdb:EuSn-04Liu-LB.tdb:BCT_A5

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

EuSn-04Liu-LB.tdb: BCT_A5, type code %, sha256 f031ab43145b765a…

35: PHASE BCT_A5 % 1 1 !
36: CONST BCT_A5 : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase; reports values for this phase
doi:10.1016/s0925-8388(96)02402-4 A. Palenzona, P. Manfrinetti, R. Palenzona, A reinvestigation of the ScIn system and related (Tm,Lu)In compounds, Journal of Alloys and Compounds 243, 182-185 (1996).
cited as the source of values for this phase

BCC_A2 (Eu–Sn)

Id: phase:eu-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): 300–1115 K, x(Sn) 0–0.0007
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (4): corpus: corpus:phase:eu-sn:bcc-a2
paper: paper:10.1016/j.jallcom.2004.02.012:(bcc)Eu, paper:10.1016/j.jallcom.2004.02.012:Eu(bcc)
tdb: tdb:EuSn-04Liu-LB.tdb:BCC_A2

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

EuSn-04Liu-LB.tdb: BCC_A2, type code %B, sha256 f031ab43145b765a…

25: PHASE BCC_A2 %B 2 1 3 !
26: CONST BCC_A2 : EU% SN : VA : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase; reports values for this phase

EU2SN_C37 (Eu–Sn)

Id: phase:eu-sn:eu2sn-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-aaacramo and oqmd-1343565, space group 62
Stoichiometry: Eu 0.6667, Sn 0.3333
Stability: stable in 1 of 1 calculated diagram(s): 300–1628.16 K, x(Sn) 0.33333–0.33333
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:eu-sn:eu2sn-c37
mp: mp:mp-aaacramo
oqmd: oqmd:oqmd-1343565
paper: paper:10.1016/j.jallcom.2004.02.012:Eu2Sn
tdb: tdb:EuSn-04Liu-LB.tdb:EU2SN_C37

TDB models of EU2SN_C37 (1): PHASE and CONSTITUENT statements as written

EuSn-04Liu-LB.tdb: EU2SN_C37, type code %, sha256 f031ab43145b765a…

40: PHASE EU2SN_C37 % 2 2 1 !
41: CONST EU2SN_C37 : EU : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase; reports values for this phase

EU3SN5 (Eu–Sn)

Id: phase:eu-sn:eu3sn5; status assigned
Structure: Pd5Pu3 · oC32 · Cmcm (63); type st:pd5pu3-oc32; 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_63_matches_3_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Eu 0.3750, Sn 0.6250
Stability: stable in 1 of 1 calculated diagram(s): 300–1170.98 K, x(Sn) 0.625–0.625
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:eu-sn:eu3sn5
paper: paper:10.1016/j.jallcom.2004.02.012:Eu3Sn5
tdb: tdb:EuSn-04Liu-LB.tdb:EU3SN5

TDB models of EU3SN5 (1): PHASE and CONSTITUENT statements as written

EuSn-04Liu-LB.tdb: EU3SN5, type code %, sha256 f031ab43145b765a…

55: PHASE EU3SN5 % 2 3 5 !
56: CONST EU3SN5 : EU : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase; reports values for this phase

EU5SN3_D8M (Eu–Sn)

Id: phase:eu-sn:eu5sn3-d8m; status assigned
Structure: W5Si3 · D8_m · tI32 · I4/mcm (140); type st:d8-m-w5si3-ti32; tier A: standard phase name; confidence high
Stoichiometry: Eu 0.6250, Sn 0.3750
Stability: stable in 1 of 1 calculated diagram(s): 300–1396.02 K, x(Sn) 0.375–0.375
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:eu-sn:eu5sn3-d8m
paper: paper:10.1016/j.jallcom.2004.02.012:Eu5Sn3
tdb: tdb:EuSn-04Liu-LB.tdb:EU5SN3_D8M

TDB models of EU5SN3_D8M (1): PHASE and CONSTITUENT statements as written

EuSn-04Liu-LB.tdb: EU5SN3_D8M, type code %, sha256 f031ab43145b765a…

45: PHASE EU5SN3_D8M % 2 5 3 !
46: CONST EU5SN3_D8M : EU : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase; reports values for this phase

EUSN_B33 (Eu–Sn)

Id: phase:eu-sn:eusn-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-aaabghzt and oqmd-18833, space group 63
Stoichiometry: Eu 0.5000, Sn 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1394.66 K, x(Sn) 0.5–0.5
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:eu-sn:eusn-b33
mp: mp:mp-aaabghzt
oqmd: oqmd:oqmd-18833
paper: paper:10.1016/j.jallcom.2004.02.012:EuSn
tdb: tdb:EuSn-04Liu-LB.tdb:EUSN_B33

TDB models of EUSN_B33 (1): PHASE and CONSTITUENT statements as written

EuSn-04Liu-LB.tdb: EUSN_B33, type code %, sha256 f031ab43145b765a…

50: PHASE EUSN_B33 % 2 1 1 !
51: CONST EUSN_B33 : EU : SN : !

Example references (1 of 1; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase; reports values for this phase

EUSN3_L12 (Eu–Sn)

Id: phase:eu-sn:eusn3-l12; status assigned
Structure: AuCu3 · L1_2 · cP4 · Pm-3m (221); type st:l1-2-aucu3-cp4; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaabeed and oqmd-18834, space group 221
Stoichiometry: Eu 0.2500, Sn 0.7500
Stability: stable in 1 of 1 calculated diagram(s): 300–1068.67 K, x(Sn) 0.75–0.75
Literature: 8 values (8 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:eu-sn:eusn3-l12
mp: mp:mp-aaaabeed
oqmd: oqmd:oqmd-18834
paper: paper:10.1016/j.jallcom.2004.02.012:EuSn3
tdb: tdb:EuSn-04Liu-LB.tdb:EUSN3_L12

TDB models of EUSN3_L12 (1): PHASE and CONSTITUENT statements as written

EuSn-04Liu-LB.tdb: EUSN3_L12, type code %, sha256 f031ab43145b765a…

60: PHASE EUSN3_L12 % 2 1 3 !
61: CONST EUSN3_L12 : EU : SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase; reports values for this phase
doi:10.1016/s0925-8388(96)02402-4 A. Palenzona, P. Manfrinetti, R. Palenzona, A reinvestigation of the ScIn system and related (Tm,Lu)In compounds, Journal of Alloys and Compounds 243, 182-185 (1996).
cited as the source of values for this phase

LIQUID (Eu–Sn)

Id: phase:eu-sn:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 501.58–2500 K, x(Sn) 0–1
Literature: 24 values (24 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:eu-sn:liquid
paper: paper:10.1016/j.jallcom.2004.02.012:L
tdb: tdb:EuSn-04Liu-LB.tdb:LIQUID

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

EuSn-04Liu-LB.tdb: LIQUID, type code %, sha256 f031ab43145b765a…

20: PHASE LIQUID:L % 1 1 !
21: CONST LIQUID:L : EU SN : !

Example references (2 of 2; assessments first):

doi:10.1016/j.jallcom.2004.02.012 Lihui Liu, Changrong Li, Fuming Wang, Zhenmin Du, Weijing Zhang, Thermodynamic assessment of the Eu–Sn system, Journal of Alloys and Compounds 379, 148-153 (2004).
assessment that models this phase; reports values for this phase
doi:10.1016/s0925-8388(96)02402-4 A. Palenzona, P. Manfrinetti, R. Palenzona, A reinvestigation of the ScIn system and related (Tm,Lu)In compounds, Journal of Alloys and Compounds 243, 182-185 (1996).
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}
}