Er–Ni phases

15 phases (tier A 7, tier C 5, liquid 1, needs_review 2); 14 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–Ni system page · Markdown · field reference

Phases of the Er–Ni system (15)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
BCC_A2 phase:er-ni:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
ER2NI17 phase:er-ni:er2ni17	Ni17Th2 · hP38 · P6_3/mmc (194)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1587.4 K, x(Ni) 0.89474–0.89474	4	1
ER2NI7 phase:er-ni:er2ni7	Co7Gd2 · hR18 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1547.98 K, x(Ni) 0.77778–0.77778	2	1
ER3NI_D011 phase:er-ni:er3ni-d011	Fe3C · D0_11 · oP16 · Pnma (62)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1109.71 K, x(Ni) 0.25–0.25	4	1
ER3NI2 phase:er-ni:er3ni2	Er3Ni2 · hR15 · R-3 (148)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1076.39 K, x(Ni) 0.4–0.4	4	1
ER4NI17 phase:er-ni:er4ni17		needs_review	stable in 1 of 1 calculated diagram(s): 300–1644.42 K, x(Ni) 0.80952–0.80952	4	1
ER5NI22 phase:er-ni:er5ni22		needs_review	stable in 1 of 1 calculated diagram(s): 300–1650.54 K, x(Ni) 0.81481–0.81481	4	1
ERNI_B27 phase:er-ni:erni-b27	FeB · B27 · oP8 · Pnma (62)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1362.65 K, x(Ni) 0.5–0.5	6	1
ERNI2_C15 phase:er-ni:erni2-c15	Cu2Mg · C15 · cF24 · Fd-3m (227)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1527.54 K, x(Ni) 0.66667–0.66667	4	1
ERNI3 phase:er-ni:erni3	Ni3Pu · hR12 · R-3m (166)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1594.73 K, x(Ni) 0.75–0.75	6	1
ERNI4 phase:er-ni:erni4	Ni4Pu · mC30 · C2/m (12)	tier C: assessor-stated (Hallstedt 2025 crystallographic table)	stable in 1 of 1 calculated diagram(s): 300–1634.09 K, x(Ni) 0.8–0.8	6	1
ERNI5_D2D phase:er-ni:erni5-d2d	CaCu5 · D2_d · hP6 · P6/mmm (191)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1656 K, x(Ni) 0.83333–0.83333	6	1
FCC_A1 phase:er-ni:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–2499.9 K, x(Ni) 1–1	2	1
HCP_A3 phase:er-ni:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 300–1869.71 K, x(Ni) 0–0	2	1
LIQUID phase:er-ni:liquid	liquid	liquid	stable in 1 of 1 calculated diagram(s): 1039.68–2500 K, x(Ni) 0–1	26	1

BCC_A2 (Er–Ni)

Id: phase:er-ni:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; 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:er-ni:bcc-a2
tdb: tdb:ErNi-99Du.tdb:BCC_A2

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

ErNi-99Du.tdb: BCC_A2, type code %B, sha256 3326a047cf17bbff…

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

Example references (1 of 1; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase

ER2NI17 (Er–Ni)

Id: phase:er-ni:er2ni17; 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, Ni 0.8947
Stability: stable in 1 of 1 calculated diagram(s): 300–1587.4 K, x(Ni) 0.89474–0.89474
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:er2ni17
paper: paper:10.1016/s0925-8388(98)00928-1:Er2Ni17
tdb: tdb:ErNi-99Du.tdb:ER2NI17

TDB models of ER2NI17 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ER2NI17, type code %, sha256 3326a047cf17bbff…

92: PHASE ER2NI17 % 2 2 17 !
93: CONST ER2NI17 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ER2NI7 (Er–Ni)

Id: phase:er-ni:er2ni7; status assigned
Structure: Co7Gd2 · hR18 · R-3m (166); type st:co7gd2-hr18; 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 (mp_oqmd_space_groups_differ, no_structure_token); structure as stated in the SGTE crystallographic table for this phase name and system
Stoichiometry: Er 0.2222, Ni 0.7778
Stability: stable in 1 of 1 calculated diagram(s): 300–1547.98 K, x(Ni) 0.77778–0.77778
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:er2ni7
paper: paper:10.1016/s0925-8388(98)00928-1:Er2Ni7
tdb: tdb:ErNi-99Du.tdb:ER2NI7

TDB models of ER2NI7 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ER2NI7, type code %, sha256 3326a047cf17bbff…

67: PHASE ER2NI7 % 2 2 7 !
68: CONST ER2NI7 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ER3NI_D011 (Er–Ni)

Id: phase:er-ni:er3ni-d011; status assigned
Structure: Fe3C · D0_11 · oP16 · Pnma (62); type st:d0-11-fe3c-op16; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaackxyx and oqmd-30013, space group 62
Stoichiometry: Er 0.7500, Ni 0.2500
Stability: stable in 1 of 1 calculated diagram(s): 300–1109.71 K, x(Ni) 0.25–0.25
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:er-ni:er3ni-d011
mp: mp:mp-aaackxyx
oqmd: oqmd:oqmd-30013
paper: paper:10.1016/s0925-8388(98)00928-1:Er3Ni
tdb: tdb:ErNi-99Du.tdb:ER3NI_D011

TDB models of ER3NI_D011 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ER3NI_D011, type code %, sha256 3326a047cf17bbff…

42: PHASE ER3NI_D011 % 2 3 1 !
43: CONST ER3NI_D011 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ER3NI2 (Er–Ni)

Id: phase:er-ni:er3ni2; status assigned
Structure: Er3Ni2 · hR15 · R-3 (148); type st:er3ni2-hr15; 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 0.6000, Ni 0.4000
Stability: stable in 1 of 1 calculated diagram(s): 300–1076.39 K, x(Ni) 0.4–0.4
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:er3ni2
paper: paper:10.1016/s0925-8388(98)00928-1:Er3Ni2
tdb: tdb:ErNi-99Du.tdb:ER3NI2

TDB models of ER3NI2 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ER3NI2, type code %, sha256 3326a047cf17bbff…

47: PHASE ER3NI2 % 2 3 2 !
48: CONST ER3NI2 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ER4NI17 (Er–Ni)

Id: phase:er-ni:er4ni17; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Er4Ni17) · hP126 — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Er4Ni17) · hP126 — Hallstedt 2025 mmc2 row for ER4NI17: Er4Ni17
Stoichiometry: Er 0.1905, Ni 0.8095
Stability: stable in 1 of 1 calculated diagram(s): 300–1644.42 K, x(Ni) 0.80952–0.80952
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:er4ni17
paper: paper:10.1016/s0925-8388(98)00928-1:Er4Ni17
tdb: tdb:ErNi-99Du.tdb:ER4NI17

TDB models of ER4NI17 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ER4NI17, type code %, sha256 3326a047cf17bbff…

77: PHASE ER4NI17 % 2 4 17 !
78: CONST ER4NI17 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ER5NI22 (Er–Ni)

Id: phase:er-ni:er5ni22; status needs_review
No structure assigned. Why: no_on_hull_entry_in_both; no_structure_token; sgte_mmc2_row_incomplete
Candidate (literature_printed): (Er5Ni22) · hP108 — printed with a label mapped to this phase
Candidate (sgte_mmc2): (Er5Ni22) · hP108 — Hallstedt 2025 mmc2 row for ER5NI22: Er5Ni22
Stoichiometry: Er 0.1852, Ni 0.8148
Stability: stable in 1 of 1 calculated diagram(s): 300–1650.54 K, x(Ni) 0.81481–0.81481
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:er5ni22
paper: paper:10.1016/s0925-8388(98)00928-1:Er5Ni22
tdb: tdb:ErNi-99Du.tdb:ER5NI22

TDB models of ER5NI22 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ER5NI22, type code %, sha256 3326a047cf17bbff…

82: PHASE ER5NI22 % 2 5 22 !
83: CONST ER5NI22 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ERNI_B27 (Er–Ni)

Id: phase:er-ni:erni-b27; status assigned
Structure: FeB · B27 · oP8 · Pnma (62); type st:b27-feb-op8; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaabghfu and oqmd-30015, space group 62
Stoichiometry: Er 0.5000, Ni 0.5000
Stability: stable in 1 of 1 calculated diagram(s): 300–1362.65 K, x(Ni) 0.5–0.5
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:er-ni:erni-b27
mp: mp:mp-aaabghfu
oqmd: oqmd:oqmd-30015
paper: paper:10.1016/s0925-8388(98)00928-1:ErNi
tdb: tdb:ErNi-99Du.tdb:ERNI_B27

TDB models of ERNI_B27 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ERNI_B27, type code %, sha256 3326a047cf17bbff…

52: PHASE ERNI_B27 % 2 1 1 !
53: CONST ERNI_B27 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ERNI2_C15 (Er–Ni)

Id: phase:er-ni:erni2-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-aaaaacwp and oqmd-30016, space group 227
Stoichiometry: Er 0.3333, Ni 0.6667
Stability: stable in 1 of 1 calculated diagram(s): 300–1527.54 K, x(Ni) 0.66667–0.66667
Literature: 4 values (4 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:er-ni:erni2-c15
mp: mp:mp-aaaaacwp
oqmd: oqmd:oqmd-30016
paper: paper:10.1016/s0925-8388(98)00928-1:ErNi2
tdb: tdb:ErNi-99Du.tdb:ERNI2_C15

TDB models of ERNI2_C15 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ERNI2_C15, type code %, sha256 3326a047cf17bbff…

57: PHASE ERNI2_C15 % 2 1 2 !
58: CONST ERNI2_C15 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ERNI3 (Er–Ni)

Id: phase:er-ni:erni3; 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, Ni 0.7500
Stability: stable in 1 of 1 calculated diagram(s): 300–1594.73 K, x(Ni) 0.75–0.75
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:erni3
paper: paper:10.1016/s0925-8388(98)00928-1:ErNi3
tdb: tdb:ErNi-99Du.tdb:ERNI3

TDB models of ERNI3 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ERNI3, type code %, sha256 3326a047cf17bbff…

62: PHASE ERNI3 % 2 1 3 !
63: CONST ERNI3 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ERNI4 (Er–Ni)

Id: phase:er-ni:erni4; status assigned
Structure: Ni4Pu · mC30 · C2/m (12); type st:ni4pu-mc30; 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 0.2000, Ni 0.8000
Stability: stable in 1 of 1 calculated diagram(s): 300–1634.09 K, x(Ni) 0.8–0.8
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:erni4
paper: paper:10.1016/s0925-8388(98)00928-1:ErNi4
tdb: tdb:ErNi-99Du.tdb:ERNI4

TDB models of ERNI4 (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ERNI4, type code %, sha256 3326a047cf17bbff…

72: PHASE ERNI4 % 2 1 4 !
73: CONST ERNI4 : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

ERNI5_D2D (Er–Ni)

Id: phase:er-ni:erni5-d2d; status assigned
Structure: CaCu5 · D2_d · hP6 · P6/mmm (191); type st:d2-d-cacu5-hp6; tier A: standard phase name; confidence high
Caveat: DFT agrees: on-hull mp-aaaaabgv and oqmd-9962, space group 191
Stoichiometry: Er 0.1667, Ni 0.8333
Stability: stable in 1 of 1 calculated diagram(s): 300–1656 K, x(Ni) 0.83333–0.83333
Literature: 6 values (6 accepted) from 1 papers
Interactive: phase registry entry

Names (5): corpus: corpus:phase:er-ni:erni5-d2d
mp: mp:mp-aaaaabgv
oqmd: oqmd:oqmd-9962
paper: paper:10.1016/s0925-8388(98)00928-1:ErNi5
tdb: tdb:ErNi-99Du.tdb:ERNI5_D2D

TDB models of ERNI5_D2D (1): PHASE and CONSTITUENT statements as written

ErNi-99Du.tdb: ERNI5_D2D, type code %, sha256 3326a047cf17bbff…

87: PHASE ERNI5_D2D % 2 1 5 !
88: CONST ERNI5_D2D : ER : NI : !

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

FCC_A1 (Er–Ni)

Id: phase:er-ni: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 1 of 1 calculated diagram(s): 300–2499.9 K, x(Ni) 1–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:fcc-a1
paper: paper:10.1016/s0925-8388(98)00928-1:fcc(Ni)
tdb: tdb:ErNi-99Du.tdb:FCC_A1

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

ErNi-99Du.tdb: FCC_A1, type code %A, sha256 3326a047cf17bbff…

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

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

HCP_A3 (Er–Ni)

Id: phase:er-ni: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): 300–1869.71 K, x(Ni) 0–0
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:hcp-a3
paper: paper:10.1016/s0925-8388(98)00928-1:hcp(Er)
tdb: tdb:ErNi-99Du.tdb:HCP_A3

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

ErNi-99Du.tdb: HCP_A3, type code %, sha256 3326a047cf17bbff…

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

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
cited as the source of values for this phase

LIQUID (Er–Ni)

Id: phase:er-ni:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 1039.68–2500 K, x(Ni) 0–1
Literature: 26 values (26 accepted) from 1 papers
Interactive: phase registry entry

Names (3): corpus: corpus:phase:er-ni:liquid
paper: paper:10.1016/s0925-8388(98)00928-1:L
tdb: tdb:ErNi-99Du.tdb:LIQUID

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

ErNi-99Du.tdb: LIQUID, type code %, sha256 3326a047cf17bbff…

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

Example references (2 of 2; assessments first):

doi:10.1016/S0925-8388(98)00928-1 Z. Du, D. Wang, W. Zhang, J. Alloys Compd., 284, 206-12(1999).
assessment that models this phase; reports values for this phase
doi:10.1016/0022-5088(68)90155-0 K.H.J. Buschow, Crystal structures, magnetic properties and phase relations of erbium-nickel intermetallic compounds, Journal of the Less Common Metals 16, 45-53 (1968).
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}
}