Er–Fe phases

8 phases (tier A 5, tier C 2, 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 · Er–Fe system page · Markdown · field reference

Phases of the Er–Fe system (8)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:er-fe:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–2499.71 K, x(Fe) 0.98333–1	6	4
ER2FE17 phase:er-fe:er2fe17	Ni17Th2 · hP38 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 300–1625.28 K, x(Fe) 0.89474–0.89474	14	4
ER6FE23_D8A phase:er-fe:er6fe23-d8a	Mn23Th6 · D8_a · cF116 · Fm-3m (225)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–1603.53 K, x(Fe) 0.7931–0.7931	12	4
ERFE2_C15 phase:er-fe:erfe2-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–1640 K, x(Fe) 0.66667–0.66667	16	4
ERFE3 phase:er-fe:erfe3	Ni3Pu · hR12 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 4 of 4 calculated diagram(s): 300–1616.08 K, x(Fe) 0.75–0.75	12	4
FCC_A1 phase:er-fe:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 301.07–1810.85 K, x(Fe) 0.98085–1	12	4
HCP_A3 phase:er-fe:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 4 of 4 calculated diagram(s): 300–1830.54 K, x(Fe) 0–0.00269	6	4
LIQUID phase:er-fe:liquid	liquid	liquid	stable in 4 of 4 calculated diagram(s): 1184.44–2500 K, x(Fe) 0–1	62	4

BCC_A2 (Er–Fe)

Id: phase:er-fe: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 4 of 4 calculated diagram(s): 300–2499.71 K, x(Fe) 0.98333–1
Literature: 6 values (6 accepted) from 2 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:er-fe:bcc-a2
paper: paper:10.1016/j.calphad.2011.04.001:bcc, paper:10.1016/j.jallcom.2011.08.014:(δFe)
tdb: tdb:ErFe-10Zho.tdb:BCC_A2, tdb:ErFe-11Wan.tdb:BCC_A2, tdb:ErFe-12Wan.tdb:BCC_A2, tdb:ErFe-23Ye.tdb:BCC_A2

TDB models of BCC_A2 (4): PHASE and CONSTITUENT statements as written

ErFe-10Zho.tdb: BCC_A2, type code %B, sha256 1040d981d623df87…

33: PHASE BCC_A2 %B 2 1 3 !
34: CONST BCC_A2 : ER FE : VA : !

ErFe-11Wan.tdb: BCC_A2, type code %B, sha256 d3d26033abb0e6a6…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : ER FE : VA : !

ErFe-12Wan.tdb: BCC_A2, type code %B, sha256 9284f49a27f3fe26…

45: PHASE BCC_A2 %B 2 1 3 !
46: CONST BCC_A2 : ER FE : VA : !

ErFe-23Ye.tdb: BCC_A2, type code %B, sha256 d3f1e827a3153e9e…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : ER FE : VA : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2011.04.001 Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2011.08.014 S.L. Wang, J.J. Han, C.P. Wang, S.Z. Kou, X.J. Liu, Thermodynamic assessment and the composition prediction of amorphous alloy in the Fe–B–Er alloy system, Journal of Alloys and Compounds 513, 27-34 (2012).
assessment that models this phase; reports values for this phase
doi:10.1016/j.physb.2010.05.046 G.J. Zhou, Z.W. Liu, D.C. Zeng, Z.P. Jin, Thermodynamic assessment of the Fe–Er system, Physica B: Condensed Matter 405, 3590-3593 (2010).
assessment that models this phase
doi:10.1002/pssb.19690350154 K. H. J. Buschow, A. S. van der Goot, Phase Relations, Crystal Structures, and Magnetic Properties of Erbium—Iron Compounds, Physica Status Solidi (b) 35, 515-522 (1969).
cited as the source of values for this phase

ER2FE17 (Er–Fe)

Id: phase:er-fe:er2fe17; status assigned
Structure: Ni17Th2 · hP38 · P6_3/mmc (194); type st:ni17th2-hp38; 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: Er 0.1053, Fe 0.8947
Stability: stable in 4 of 4 calculated diagram(s): 300–1625.28 K, x(Fe) 0.89474–0.89474
Literature: 14 values (14 accepted) from 3 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:er-fe:er2fe17
paper: paper:10.1016/j.calphad.2011.04.001:Er2Fe17, paper:10.1016/j.jallcom.2011.08.014:Fe17Er2, paper:10.1016/j.physb.2010.05.046:Fe17Er2
tdb: tdb:ErFe-10Zho.tdb:ER2FE17, tdb:ErFe-11Wan.tdb:ER2FE17, tdb:ErFe-12Wan.tdb:ER2FE17, tdb:ErFe-23Ye.tdb:ER2FE17

TDB models of ER2FE17 (4): PHASE and CONSTITUENT statements as written

ErFe-10Zho.tdb: ER2FE17, type code %, sha256 1040d981d623df87…

58: PHASE ER2FE17 % 2 2 17 !
59: CONST ER2FE17 : ER : FE : !

ErFe-11Wan.tdb: ER2FE17, type code %A, sha256 d3d26033abb0e6a6…

57: PHASE ER2FE17 %A 2 2 17 !
58: CONST ER2FE17 : ER : FE : !

ErFe-12Wan.tdb: ER2FE17, type code %A, sha256 9284f49a27f3fe26…

70: PHASE ER2FE17 %A 2 2 17 !
71: CONST ER2FE17 : ER : FE : !

ErFe-23Ye.tdb: ER2FE17, type code %A, sha256 d3f1e827a3153e9e…

61: PHASE ER2FE17 %A 2 2 17 !
62: CONST ER2FE17 : ER : FE : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2011.04.001 Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2011.08.014 S.L. Wang, J.J. Han, C.P. Wang, S.Z. Kou, X.J. Liu, Thermodynamic assessment and the composition prediction of amorphous alloy in the Fe–B–Er alloy system, Journal of Alloys and Compounds 513, 27-34 (2012).
assessment that models this phase; reports values for this phase
doi:10.1016/j.physb.2010.05.046 G.J. Zhou, Z.W. Liu, D.C. Zeng, Z.P. Jin, Thermodynamic assessment of the Fe–Er system, Physica B: Condensed Matter 405, 3590-3593 (2010).
assessment that models this phase; reports values for this phase
doi:10.1002/pssb.19690350154 K. H. J. Buschow, A. S. van der Goot, Phase Relations, Crystal Structures, and Magnetic Properties of Erbium—Iron Compounds, Physica Status Solidi (b) 35, 515-522 (1969).
cited as the source of values for this phase

ER6FE23_D8A (Er–Fe)

Id: phase:er-fe:er6fe23-d8a; status assigned
Structure: Mn23Th6 · D8_a · cF116 · Fm-3m (225); type st:d8-a-mn23th6-cf116; tier A: standard phase name; confidence high
Stoichiometry: Er 0.2069, Fe 0.7931
Stability: stable in 4 of 4 calculated diagram(s): 300–1603.53 K, x(Fe) 0.7931–0.7931
Literature: 12 values (12 accepted) from 3 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:er-fe:er6fe23-d8a
paper: paper:10.1016/j.calphad.2011.04.001:Er6Fe23, paper:10.1016/j.jallcom.2011.08.014:Fe23Er6, paper:10.1016/j.physb.2010.05.046:Fe23Er6
tdb: tdb:ErFe-10Zho.tdb:ER6FE23_D8A, tdb:ErFe-11Wan.tdb:ER6FE23_D8A, tdb:ErFe-12Wan.tdb:ER6FE23_D8A, tdb:ErFe-23Ye.tdb:ER6FE23_D8A

TDB models of ER6FE23_D8A (4): PHASE and CONSTITUENT statements as written

ErFe-10Zho.tdb: ER6FE23_D8A, type code %, sha256 1040d981d623df87…

53: PHASE ER6FE23_D8A % 2 6 23 !
54: CONST ER6FE23_D8A : ER : FE : !

ErFe-11Wan.tdb: ER6FE23_D8A, type code %A, sha256 d3d26033abb0e6a6…

52: PHASE ER6FE23_D8A %A 2 6 23 !
53: CONST ER6FE23_D8A : ER : FE : !

ErFe-12Wan.tdb: ER6FE23_D8A, type code %A, sha256 9284f49a27f3fe26…

65: PHASE ER6FE23_D8A %A 2 6 23 !
66: CONST ER6FE23_D8A : ER : FE : !

ErFe-23Ye.tdb: ER6FE23_D8A, type code %A, sha256 d3f1e827a3153e9e…

56: PHASE ER6FE23_D8A %A 2 6 23 !
57: CONST ER6FE23_D8A : ER : FE : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2011.04.001 Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2011.08.014 S.L. Wang, J.J. Han, C.P. Wang, S.Z. Kou, X.J. Liu, Thermodynamic assessment and the composition prediction of amorphous alloy in the Fe–B–Er alloy system, Journal of Alloys and Compounds 513, 27-34 (2012).
assessment that models this phase; reports values for this phase
doi:10.1016/j.physb.2010.05.046 G.J. Zhou, Z.W. Liu, D.C. Zeng, Z.P. Jin, Thermodynamic assessment of the Fe–Er system, Physica B: Condensed Matter 405, 3590-3593 (2010).
assessment that models this phase; reports values for this phase
doi:10.1002/pssb.19690350154 K. H. J. Buschow, A. S. van der Goot, Phase Relations, Crystal Structures, and Magnetic Properties of Erbium—Iron Compounds, Physica Status Solidi (b) 35, 515-522 (1969).
cited as the source of values for this phase

ERFE2_C15 (Er–Fe)

Id: phase:er-fe:erfe2-c15; status assigned
Structure: Cu2Mg · C15 · cF24 · Fd-3m (227); type st:c15-cu2mg-cf24; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaaasg and oqmd-20826, space group 227
Stoichiometry: Er 0.3333, Fe 0.6667
Stability: stable in 4 of 4 calculated diagram(s): 300–1640 K, x(Fe) 0.66667–0.66667
Literature: 16 values (16 accepted) from 3 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:er-fe:erfe2-c15
mp: mp:mp-aaaaaasg
oqmd: oqmd:oqmd-20826
paper: paper:10.1016/j.calphad.2011.04.001:ErFe2, paper:10.1016/j.jallcom.2011.08.014:Fe2Er, paper:10.1016/j.physb.2010.05.046:Fe2Er
tdb: tdb:ErFe-10Zho.tdb:ERFE2_C15, tdb:ErFe-11Wan.tdb:ERFE2_C15, tdb:ErFe-12Wan.tdb:ERFE2_C15, tdb:ErFe-23Ye.tdb:ERFE2_C15

TDB models of ERFE2_C15 (4): PHASE and CONSTITUENT statements as written

ErFe-10Zho.tdb: ERFE2_C15, type code %, sha256 1040d981d623df87…

43: PHASE ERFE2_C15 % 2 1 2 !
44: CONST ERFE2_C15 : ER : FE : !

ErFe-11Wan.tdb: ERFE2_C15, type code %A, sha256 d3d26033abb0e6a6…

42: PHASE ERFE2_C15 %A 2 1 2 !
43: CONST ERFE2_C15 : ER : FE : !

ErFe-12Wan.tdb: ERFE2_C15, type code %A, sha256 9284f49a27f3fe26…

55: PHASE ERFE2_C15 %A 2 1 2 !
56: CONST ERFE2_C15 : ER : FE : !

ErFe-23Ye.tdb: ERFE2_C15, type code %A, sha256 d3f1e827a3153e9e…

46: PHASE ERFE2_C15 %A 2 1 2 !
47: CONST ERFE2_C15 : ER : FE : !

Example references (4 of 4; assessments first):

doi:10.1016/j.jallcom.2011.08.014 S.L. Wang, J.J. Han, C.P. Wang, S.Z. Kou, X.J. Liu, Thermodynamic assessment and the composition prediction of amorphous alloy in the Fe–B–Er alloy system, Journal of Alloys and Compounds 513, 27-34 (2012).
assessment that models this phase; reports values for this phase
doi:10.1016/j.physb.2010.05.046 G.J. Zhou, Z.W. Liu, D.C. Zeng, Z.P. Jin, Thermodynamic assessment of the Fe–Er system, Physica B: Condensed Matter 405, 3590-3593 (2010).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.04.001 Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011).
assessment that models this phase; reports values for this phase
doi:10.1002/pssb.19690350154 K. H. J. Buschow, A. S. van der Goot, Phase Relations, Crystal Structures, and Magnetic Properties of Erbium—Iron Compounds, Physica Status Solidi (b) 35, 515-522 (1969).
cited as the source of values for this phase

ERFE3 (Er–Fe)

Id: phase:er-fe:erfe3; status assigned
Structure: Ni3Pu · hR12 · R-3m (166); type st:ni3pu-hr12; 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_166_matches_2_structure_types, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Er 0.2500, Fe 0.7500
Stability: stable in 4 of 4 calculated diagram(s): 300–1616.08 K, x(Fe) 0.75–0.75
Literature: 12 values (12 accepted) from 3 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:er-fe:erfe3
paper: paper:10.1016/j.calphad.2011.04.001:ErFe3, paper:10.1016/j.jallcom.2011.08.014:Fe3Er, paper:10.1016/j.physb.2010.05.046:Fe3ER, paper:10.1016/j.physb.2010.05.046:Fe3Er
tdb: tdb:ErFe-10Zho.tdb:ERFE3, tdb:ErFe-11Wan.tdb:ERFE3, tdb:ErFe-12Wan.tdb:ERFE3, tdb:ErFe-23Ye.tdb:ERFE3

TDB models of ERFE3 (4): PHASE and CONSTITUENT statements as written

ErFe-10Zho.tdb: ERFE3, type code %, sha256 1040d981d623df87…

48: PHASE ERFE3 % 2 1 3 !
49: CONST ERFE3 : ER : FE : !

ErFe-11Wan.tdb: ERFE3, type code %A, sha256 d3d26033abb0e6a6…

47: PHASE ERFE3 %A 2 1 3 !
48: CONST ERFE3 : ER : FE : !

ErFe-12Wan.tdb: ERFE3, type code %A, sha256 9284f49a27f3fe26…

60: PHASE ERFE3 %A 2 1 3 !
61: CONST ERFE3 : ER : FE : !

ErFe-23Ye.tdb: ERFE3, type code %A, sha256 d3f1e827a3153e9e…

51: PHASE ERFE3 %A 2 1 3 !
52: CONST ERFE3 : ER : FE : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2011.04.001 Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2011.08.014 S.L. Wang, J.J. Han, C.P. Wang, S.Z. Kou, X.J. Liu, Thermodynamic assessment and the composition prediction of amorphous alloy in the Fe–B–Er alloy system, Journal of Alloys and Compounds 513, 27-34 (2012).
assessment that models this phase; reports values for this phase
doi:10.1016/j.physb.2010.05.046 G.J. Zhou, Z.W. Liu, D.C. Zeng, Z.P. Jin, Thermodynamic assessment of the Fe–Er system, Physica B: Condensed Matter 405, 3590-3593 (2010).
assessment that models this phase; reports values for this phase
doi:10.1002/pssb.19690350154 K. H. J. Buschow, A. S. van der Goot, Phase Relations, Crystal Structures, and Magnetic Properties of Erbium—Iron Compounds, Physica Status Solidi (b) 35, 515-522 (1969).
cited as the source of values for this phase

FCC_A1 (Er–Fe)

Id: phase:er-fe: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 4 of 4 calculated diagram(s): 301.07–1810.85 K, x(Fe) 0.98085–1
Literature: 12 values (12 accepted) from 3 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:er-fe:fcc-a1
paper: paper:10.1016/j.calphad.2011.04.001:fcc, paper:10.1016/j.jallcom.2011.08.014:(γFe), paper:10.1016/j.physb.2010.05.046:Fcc(Fe)
tdb: tdb:ErFe-10Zho.tdb:FCC_A1, tdb:ErFe-11Wan.tdb:FCC_A1, tdb:ErFe-12Wan.tdb:FCC_A1, tdb:ErFe-23Ye.tdb:FCC_A1

TDB models of FCC_A1 (4): PHASE and CONSTITUENT statements as written

ErFe-10Zho.tdb: FCC_A1, type code %A, sha256 1040d981d623df87…

28: PHASE FCC_A1 %A 2 1 1 !
29: CONST FCC_A1 : FE : VA : !

ErFe-11Wan.tdb: FCC_A1, type code %A, sha256 d3d26033abb0e6a6…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : ER FE% : VA : !

ErFe-12Wan.tdb: FCC_A1, type code %A, sha256 9284f49a27f3fe26…

40: PHASE FCC_A1 %A 2 1 1 !
41: CONST FCC_A1 : ER FE% : VA : !

ErFe-23Ye.tdb: FCC_A1, type code %A, sha256 d3f1e827a3153e9e…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : FE : VA : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2011.04.001 Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2011.08.014 S.L. Wang, J.J. Han, C.P. Wang, S.Z. Kou, X.J. Liu, Thermodynamic assessment and the composition prediction of amorphous alloy in the Fe–B–Er alloy system, Journal of Alloys and Compounds 513, 27-34 (2012).
assessment that models this phase; reports values for this phase
doi:10.1016/j.physb.2010.05.046 G.J. Zhou, Z.W. Liu, D.C. Zeng, Z.P. Jin, Thermodynamic assessment of the Fe–Er system, Physica B: Condensed Matter 405, 3590-3593 (2010).
assessment that models this phase; reports values for this phase
doi:10.1002/pssb.19690350154 K. H. J. Buschow, A. S. van der Goot, Phase Relations, Crystal Structures, and Magnetic Properties of Erbium—Iron Compounds, Physica Status Solidi (b) 35, 515-522 (1969).
cited as the source of values for this phase

HCP_A3 (Er–Fe)

Id: phase:er-fe: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 4 of 4 calculated diagram(s): 300–1830.54 K, x(Fe) 0–0.00269
Literature: 6 values (6 accepted) from 3 papers
Interactive: phase registry entry

Names (8): corpus: corpus:phase:er-fe:hcp-a3
paper: paper:10.1016/j.calphad.2011.04.001:hcp, paper:10.1016/j.jallcom.2011.08.014:(Er), paper:10.1016/j.physb.2010.05.046:hcp (Er)
tdb: tdb:ErFe-10Zho.tdb:HCP_A3, tdb:ErFe-11Wan.tdb:HCP_A3, tdb:ErFe-12Wan.tdb:HCP_A3, tdb:ErFe-23Ye.tdb:HCP_A3

TDB models of HCP_A3 (4): PHASE and CONSTITUENT statements as written

ErFe-10Zho.tdb: HCP_A3, type code %, sha256 1040d981d623df87…

38: PHASE HCP_A3 % 2 1 0.5 !
39: CONST HCP_A3 : ER% FE : VA : !

ErFe-11Wan.tdb: HCP_A3, type code %, sha256 d3d26033abb0e6a6…

37: PHASE HCP_A3 % 2 1 0.5 !
38: CONST HCP_A3 : ER% FE : VA : !

ErFe-12Wan.tdb: HCP_A3, type code %, sha256 9284f49a27f3fe26…

50: PHASE HCP_A3 % 2 1 0.5 !
51: CONST HCP_A3 : ER% FE : VA : !

ErFe-23Ye.tdb: HCP_A3, type code %, sha256 d3f1e827a3153e9e…

41: PHASE HCP_A3 % 2 1 0.5 !
42: CONST HCP_A3 : ER% FE : VA : !

Example references (4 of 4; assessments first):

doi:10.1016/j.calphad.2011.04.001 Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2011.08.014 S.L. Wang, J.J. Han, C.P. Wang, S.Z. Kou, X.J. Liu, Thermodynamic assessment and the composition prediction of amorphous alloy in the Fe–B–Er alloy system, Journal of Alloys and Compounds 513, 27-34 (2012).
assessment that models this phase; reports values for this phase
doi:10.1016/j.physb.2010.05.046 G.J. Zhou, Z.W. Liu, D.C. Zeng, Z.P. Jin, Thermodynamic assessment of the Fe–Er system, Physica B: Condensed Matter 405, 3590-3593 (2010).
assessment that models this phase; reports values for this phase
doi:10.1002/pssb.19690350154 K. H. J. Buschow, A. S. van der Goot, Phase Relations, Crystal Structures, and Magnetic Properties of Erbium—Iron Compounds, Physica Status Solidi (b) 35, 515-522 (1969).
cited as the source of values for this phase

LIQUID (Er–Fe)

Id: phase:er-fe:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 4 of 4 calculated diagram(s): 1184.44–2500 K, x(Fe) 0–1
Literature: 62 values (62 accepted) from 4 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:er-fe:liquid
paper: paper:10.1016/j.calphad.2011.04.001:L, paper:10.1016/j.jallcom.2011.08.014:L, paper:10.1016/j.physb.2010.05.046:L, paper:10.1016/j.physb.2010.05.046:liquid, paper:10.20517/jmi.2023.08:L
tdb: tdb:ErFe-10Zho.tdb:LIQUID, tdb:ErFe-11Wan.tdb:LIQUID, tdb:ErFe-12Wan.tdb:LIQUID, tdb:ErFe-23Ye.tdb:LIQUID

TDB models of LIQUID (4): PHASE and CONSTITUENT statements as written

ErFe-10Zho.tdb: LIQUID, type code %, sha256 1040d981d623df87…

23: PHASE LIQUID:L % 1 1 !
24: CONST LIQUID:L : ER FE : !

ErFe-11Wan.tdb: LIQUID, type code %, sha256 d3d26033abb0e6a6…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : ER FE : !

ErFe-12Wan.tdb: LIQUID, type code %, sha256 9284f49a27f3fe26…

35: PHASE LIQUID:L % 1 1 !
36: CONST LIQUID:L : ER FE : !

ErFe-23Ye.tdb: LIQUID, type code %, sha256 d3f1e827a3153e9e…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : ER FE : !

Example references (5 of 5; assessments first):

doi:10.1016/j.physb.2010.05.046 G.J. Zhou, Z.W. Liu, D.C. Zeng, Z.P. Jin, Thermodynamic assessment of the Fe–Er system, Physica B: Condensed Matter 405, 3590-3593 (2010).
assessment that models this phase; reports values for this phase
doi:10.1016/j.jallcom.2011.08.014 S.L. Wang, J.J. Han, C.P. Wang, S.Z. Kou, X.J. Liu, Thermodynamic assessment and the composition prediction of amorphous alloy in the Fe–B–Er alloy system, Journal of Alloys and Compounds 513, 27-34 (2012).
assessment that models this phase; reports values for this phase
doi:10.1016/j.calphad.2011.04.001 Wei Wang, Cuiping Guo, Changrong Li, Zhenmin Du, Thermodynamic description of the Er–Fe–Sb system, Calphad 35, 292-301 (2011).
assessment that models this phase; reports values for this phase
doi:10.1002/pssb.19690350154 K. H. J. Buschow, A. S. van der Goot, Phase Relations, Crystal Structures, and Magnetic Properties of Erbium—Iron Compounds, Physica Status Solidi (b) 35, 515-522 (1969).
cited as the source of values for this phase
doi:10.20517/jmi.2023.08 Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023).
reports 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}
}