Ag–Er system

53 accepted literature values from 2 paper(s) (experimental 28, model 19, DFT 6); 2 calculated phase diagram(s). 7 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (7) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	28
model	19
DFT	6

Accepted values by property group
Property group	Values
invariant reaction	31
phase transition	8
formation	8
crystal structure	6

Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
AgEr-10Lon.tdb	Z.H. Long, Y.J. Yang, S. Jin, H.S. Liu, F. Zheng, Z.P. Jin, J. Alloys Compd., 489, 146-51(2010). doi:10.1016/j.jallcom.2009.09.036	`3e7d3227cef73c929d42c931e87da97e914cbae3c3887a425a00459d4cb6c33c`	viewer · TDB · JSON
AgEr-10Wan.tdb	S.L. Wang, C.P. Wang, X.J. Liu, A.T. Tang, F.S. Pan, K. Ishida, J. Alloys Compd., 490, 145-49(2010). doi:10.1016/j.jallcom.2009.10.039	`b2618a17c51bcc1d7a760ea95342eecfcb4b7db185ae7dae8bbd83f376c84328`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AgEr-10Lon.tdb	1259.92	AG2ER_C11B (x(Er) 0.33333) + LIQUID (x(Er) 0.37475) + AGER_B2 (x(Er) 0.5)
AgEr-10Lon.tdb	1259.92	AG2ER_C11B (x(Er) 0.33333) + LIQUID (x(Er) 0.37469) + AGER_B2 (x(Er) 0.5)
AgEr-10Lon.tdb	1259.92	AG2ER_C11B (x(Er) 0.33333) + LIQUID (x(Er) 0.37489) + AGER_B2 (x(Er) 0.5)
AgEr-10Lon.tdb	1198.61	AGER_B2 (x(Er) 0.5) + LIQUID (x(Er) 0.72559) + HCP_A3 (x(Er) 0.99973)
AgEr-10Lon.tdb	1198.61	AGER_B2 (x(Er) 0.5) + LIQUID (x(Er) 0.72563) + HCP_A3 (x(Er) 0.99973)
AgEr-10Lon.tdb	1167.66	AG51ER14 (x(Er) 0.21538) + LIQUID (x(Er) 0.2571) + AG2ER_C11B (x(Er) 0.33333)
AgEr-10Lon.tdb	1167.66	AG51ER14 (x(Er) 0.21538) + LIQUID (x(Er) 0.25726) + AG2ER_C11B (x(Er) 0.33333)
AgEr-10Lon.tdb	1059.85	FCC_A1 (x(Er) 0.00854) + LIQUID (x(Er) 0.1214) + AG51ER14 (x(Er) 0.21538)
AgEr-10Lon.tdb	1059.85	FCC_A1 (x(Er) 0.00854) + LIQUID (x(Er) 0.12131) + AG51ER14 (x(Er) 0.21538)
AgEr-10Wan.tdb	1265.99	AG2ER_C11B (x(Er) 0.33333) + LIQUID (x(Er) 0.36853) + AGER_B2 (x(Er) 0.5)
AgEr-10Wan.tdb	1265.99	AG2ER_C11B (x(Er) 0.33333) + LIQUID (x(Er) 0.36851) + AGER_B2 (x(Er) 0.5)
AgEr-10Wan.tdb	1265.99	AG2ER_C11B (x(Er) 0.33333) + LIQUID (x(Er) 0.36857) + AGER_B2 (x(Er) 0.5)
AgEr-10Wan.tdb	1205.16	AGER_B2 (x(Er) 0.5) + LIQUID (x(Er) 0.75379) + HCP_A3 (x(Er) 1)
AgEr-10Wan.tdb	1205.16	AGER_B2 (x(Er) 0.5) + LIQUID (x(Er) 0.75395) + HCP_A3 (x(Er) 1)
AgEr-10Wan.tdb	1205.16	AGER_B2 (x(Er) 0.5) + LIQUID (x(Er) 0.75382) + HCP_A3 (x(Er) 1)
AgEr-10Wan.tdb	1166.23	AG51ER14 (x(Er) 0.22268) + LIQUID (x(Er) 0.26126) + AG2ER_C11B (x(Er) 0.33333)
AgEr-10Wan.tdb	1064.98	FCC_A1 (x(Er) 0.02978) + LIQUID (x(Er) 0.12205) + AG51ER14 (x(Er) 0.21539)
AgEr-10Wan.tdb	1064.98	FCC_A1 (x(Er) 0.02977) + LIQUID (x(Er) 0.12204) + AG51ER14 (x(Er) 0.21539)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull AgEr-10Wan

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ag–Er system (31)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1468.25	congruent melting: L -> AgEr	L: Er 0.5; AgEr: Er 0.5	model	[1] Wang 2010	Table 3, p. 3, row 6 report
1468.15	congruent melting: L -> AgEr	L: Er 0.5; AgEr: Er 0.5	experimental	[1] Wang 2010 cites Gschneidner 1985 doi	Table 3, p. 3, row 5 report
1468.15	congruent melting: L -> AgEr	L: Er 0.5; AgEr: Er 0.5	experimental	[1] Wang 2010 cites Gebhardt 1969 doi	Table 3, p. 3, row 4 report
1293.45	congruent melting: L -> Ag2Er	L: Er 0.333; Ag2Er: Er 0.333	model	[1] Wang 2010	Table 3, p. 3, row 12 report
1293.15	congruent melting: L -> Ag2Er	L: Er 0.333; Ag2Er: Er 0.333	experimental	[1] Wang 2010 cites Gebhardt 1969 doi	Table 3, p. 3, row 10 report
1293.15	congruent melting: L -> Ag2Er	L: Er 0.333; Ag2Er: Er 0.333	experimental	[1] Wang 2010 cites Gschneidner 1985 doi	Table 3, p. 3, row 11 report
1266.15	eutectic: L -> AgEr + Ag2Er	L: Er 0.37; AgEr: Er 0.5; Ag2Er: Er 0.333	experimental	[1] Wang 2010 cites Gebhardt 1969 doi	Table 3, p. 3, row 7 report
1266.15	eutectic: L -> AgEr + Ag2Er	L: Er 0.37; AgEr: Er 0.5; Ag2Er: Er 0.333	experimental	[1] Wang 2010 cites Gschneidner 1985 doi	Table 3, p. 3, row 8 report
1266.05	eutectic: L -> AgEr + Ag2Er	L: Er 0.369; AgEr: Er 0.5; Ag2Er: Er 0.333	model	[1] Wang 2010	Table 3, p. 3, row 9 report
1266	eutectic: L -> Ag2Er + AgEr	L: Er 0.37; Ag2Er: Er 0.333333; AgEr: Er 0.5	experimental	[2] Long 2010 cites Gebhardt 1969 doi	Table 4, p. 4, row 7 report
1260	eutectic: L -> Ag2Er + AgEr	L: Er 0.374; Ag2Er: Er 0.333333; AgEr: Er 0.5	model	[2] Long 2010	Table 4, p. 4, row 6 report
1205.25	eutectic: L -> (Er) + AgEr	L: Er 0.754; (Er): Er 1; AgEr: Er 0.5	model	[1] Wang 2010	Table 3, p. 3, row 3 report
1205.15	eutectic: L -> (Er) + AgEr	L: Er 0.76; (Er): Er 1; AgEr: Er 0.5	experimental	[1] Wang 2010 cites Gebhardt 1969 doi	Table 3, p. 3, row 1 report
1205.15	eutectic: L -> (Er) + AgEr	L: Er 0.76; (Er): Er 1; AgEr: Er 0.5	experimental	[1] Wang 2010 cites Gschneidner 1985 doi	Table 3, p. 3, row 2 report
1205	eutectic: L -> AgEr + Hcp(Er)	L: Er 0.76; AgEr: Er 0.5	experimental	[2] Long 2010 cites Gebhardt 1969 doi	Table 4, p. 4, row 9 report
1203.65	congruent melting: L -> Ag51Er14		model	[1] Wang 2010	Table 3, p. 3, row 18 report
1203.15	congruent melting: L -> Ag51Er14	L: Er 0.25; Ag51Er14: Er 0.25	experimental	[1] Wang 2010 cites Gebhardt 1969 doi	Table 3, p. 3, row 16 report
1203.15	congruent melting: L -> Ag51Er14	L: Er 0.215; Ag51Er14: Er 0.215	experimental	[1] Wang 2010 cites Gschneidner 1985 doi	Table 3, p. 3, row 17 report
1199	eutectic: L -> AgEr + Hcp(Er)	L: Er 0.726; AgEr: Er 0.5	model	[2] Long 2010	Table 4, p. 4, row 8 report
1168	eutectic: L -> Ag51Er14 + Ag2Er	L: Er 0.258; Ag51Er14: Er 0.215385; Ag2Er: Er 0.333333	model	[2] Long 2010	Table 4, p. 4, row 4 report
1167.75	peritectic: L -> Ag51Er14 + Ag2Er	L: Er 0.262; Ag51Er14: Er 0.222; Ag2Er: Er 0.333	model	[1] Wang 2010	Table 3, p. 3, row 15 report
1163.15	peritectic: L -> Ag51Er14 + Ag2Er	L: Er 0.265; Ag51Er14: Er 0.25; Ag2Er: Er 0.333	experimental	[1] Wang 2010 cites Gebhardt 1969 doi	Table 3, p. 3, row 13 report
1163.15	peritectic: L -> Ag51Er14 + Ag2Er	L: Er 0.265; Ag51Er14: Er 0.215; Ag2Er: Er 0.333	experimental	[1] Wang 2010 cites Gschneidner 1985 doi	Table 3, p. 3, row 14 report
1163	eutectic: L -> Ag51Er14 + Ag2Er	L: Er 0.265; Ag51Er14: Er 0.215385; Ag2Er: Er 0.333333	experimental	[2] Long 2010 cites Gebhardt 1969 doi	Table 4, p. 4, row 5 report
1068.15	eutectic: L -> Ag51Er14 + (Ag)	Ag51Er14: Ag 0.784615, Er 0.215385; (Ag): Er 0.036	experimental	[1] Wang 2010 cites Conclusions	Table 3, p. 3, row 20 report
1068.15	eutectic: L -> Ag51Er14 + (Ag)	L: Er 0.122; Ag51Er14: Er 0.215; (Ag): Er 0.0313	model	[1] Wang 2010	Table 3, p. 3, row 22 report
1068.15	eutectic: L -> Ag51Er14 + (Ag)	L: Er 0.115; Ag51Er14: Er 0.215; (Ag): Er 0.036	experimental	[1] Wang 2010 cites Gschneidner 1985 doi	Table 3, p. 3, row 21 report
1068	eutectic: L -> Fcc(Ag) + Ag51Er14	Ag51Er14: Er 0.215385	experimental	[2] Long 2010 cites Gschneidner 1970	Table 4, p. 4, row 3 report
1060	eutectic: L -> Fcc(Ag) + Ag51Er14	L: Er 0.121; Ag51Er14: Er 0.215385	model	[2] Long 2010	Table 4, p. 4, row 1 report
1045.15	eutectic: L -> Ag51Er14 + (Ag)	L: Er 0.115; Ag51Er14: Er 0.25; (Ag): Er 0.05	experimental	[1] Wang 2010 cites Gebhardt 1969 doi	Table 3, p. 3, row 19 report
1045	eutectic: L -> Fcc(Ag) + Ag51Er14	L: Er 0.115; Ag51Er14: Er 0.215385	experimental	[2] Long 2010 cites Gebhardt 1969 doi	Table 4, p. 4, row 2 report

Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from dft_parity.json.

Enthalpies of formation, Ag–Er system (8)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Ag2Er	Ag2Er	-39 kJ/mol-atom		model	-32.114 (mp-aaaabswx)	-33.095 (oqmd-1976497)	[2] Long 2010 cites Niessen 1983 doi	Table 1, p. 3, row 18 report
Ag2Er		-34.119 kJ/mol-atom	298.15	DFT			[2] Long 2010	Table 1, p. 3, row 16 report
Ag2Er		-34.119 kJ/mol-atom	298.15	DFT			[2] Long 2010	Table 1, p. 3, row 33 report
Ag2Er	Ag2Er	-24 kJ/mol-atom ± 2.3		model	-32.114 (mp-aaaabswx)	-33.095 (oqmd-1976497)	[2] Long 2010 cites Steeb 1968 doi	Table 1, p. 3, row 34 report
Ag2Er	Ag2Er	-24 kJ/mol-atom ± 2.3	298.15	experimental	-32.114 (mp-aaaabswx)	-33.095 (oqmd-1976497)	[2] Long 2010 cites Steeb 1968 doi	Table 1, p. 3, row 17 report
AgEr	AgEr	-44.9 kJ/mol-atom ± 3.2	298.15	experimental	-33.42 (mp-aaaaadwv)	-33.553 (oqmd-10623)	[2] Long 2010 cites Pierre 1963	Table 1, p. 3, row 20 report
AgEr	AgEr	-44 kJ/mol-atom		model	-33.42 (mp-aaaaadwv)	-33.553 (oqmd-10623)	[2] Long 2010 cites Niessen 1983 doi	Table 1, p. 3, row 21 report
AgEr		-34.488 kJ/mol-atom	298.15	DFT			[2] Long 2010	Table 1, p. 3, row 19 report

Other properties

Phase transition (8)

Phase transition, Ag–Er system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	18 K	18	magnetic	experimental	[1] Wang 2010 cites Nerson 1973	p. 1 report	Nerson [11] and Kaneko et al. [12] found that the AgEr phase is antiferromagnetic with the Neel temperature of 18 K [11] and 18.8 K [12].
Phase transition	18.8 K	18.8	magnetic	experimental	[1] Wang 2010 cites Kaneko 1983	p. 1 report	Nerson [11] and Kaneko et al. [12] found that the AgEr phase is antiferromagnetic with the Neel temperature of 18 K [11] and 18.8 K [12].
Phase transition	1203 K	1203	congruent melting: L -> Ag51Er14 L: Er 0.215; Ag51Er14: Er 0.215385	experimental	[2] Long 2010 cites Gebhardt 1969 doi	Table 4, p. 4, row 11 report
Phase transition	1204 K	1204	congruent melting: L -> Ag51Er14 L: Er 0.215; Ag51Er14: Er 0.215385	model	[2] Long 2010	Table 4, p. 4, row 10 report
Phase transition	1293 K	1293	congruent melting: L -> Ag2Er L: Er 0.333; Ag2Er: Er 0.333333	experimental	[2] Long 2010 cites Gebhardt 1969 doi	Table 4, p. 4, row 13 report
Phase transition	1295 K	1295	congruent melting: L -> Ag2Er L: Er 0.333; Ag2Er: Er 0.333333	model	[2] Long 2010	Table 4, p. 4, row 12 report
Phase transition	1468 K	1468	congruent melting: L -> AgEr L: Er 0.5; AgEr: Er 0.5	experimental	[2] Long 2010 cites Gebhardt 1969 doi	Table 4, p. 4, row 15 report
Phase transition	1476 K	1476	congruent melting: L -> AgEr L: Er 0.5; AgEr: Er 0.5	model	[2] Long 2010	Table 4, p. 4, row 14 report

Crystal structure (6)

Crystal structure, Ag–Er system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Lattice a printed: a	3.669 Å		Ag2Er alloy: Er 0.333333	model	[2] Long 2010 cites Steeb 1968 doi	Table 1, p. 3, row 34 report
Lattice a printed: a	3.584 Å		AgEr alloy: Er 0.5	experimental	[2] Long 2010 cites Pierre 1963	Table 1, p. 3, row 20 report
Lattice a printed: a	3.721 Å	298.15	Ag2Er alloy: Er 0.333333	DFT	[2] Long 2010	Table 1, p. 3, row 33 report
Lattice a printed: a	3.602 Å	298.15	AgEr alloy: Er 0.5	DFT	[2] Long 2010	Table 1, p. 3, row 19 report
Lattice c printed: c	9.155 Å		Ag2Er alloy: Er 0.333333	model	[2] Long 2010 cites Steeb 1968 doi	Table 1, p. 3, row 34 report
Lattice c printed: c	9.184 Å	298.15	Ag2Er alloy: Er 0.333333	DFT	[2] Long 2010	Table 1, p. 3, row 33 report

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

S.L. Wang, C.P. Wang, X.J. Liu, A.T. Tang, F.S. Pan, K. Ishida, Thermodynamic assessments of the Ag–Er and Er–Y systems, Journal of Alloys and Compounds 490, 145-149 (2010). doi:10.1016/j.jallcom.2009.10.039
Z.H. Long, Y.J. Yang, S. Jin, H.S. Liu, F. Zheng, Z.P. Jin, Thermodynamic assessments of Ag–Dy and Ag–Er binary systems, Journal of Alloys and Compounds 489, 146-151 (2010). doi:10.1016/j.jallcom.2009.09.036

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735859
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
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 the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); 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). 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_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@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}
}