Ag–Ho system

26 accepted literature values from 1 paper(s) (experimental 19, model 7); 1 calculated phase diagram(s). 5 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	19
model	7

Accepted values by property group
Property group	Values
invariant reaction	14
phase transition	12

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
AgHo-09Wan.tdb	S.L. Wang, C.P. Wang, X.J. Liu, A.T. Tang, F.S. Pan, K. Ishida, J. Alloys Compd., 484, 102-7(2009). doi:10.1016/j.jallcom.2009.04.037	`f36e10e15718ddcc1c65e029118d6db8c304aa9c610b98f63b7d23ab7a4b9376`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AgHo-09Wan.tdb	1244.67	AG2HO_C11B (x(Ho) 0.33333) + LIQUID (x(Ho) 0.36616) + AGHO_B2 (x(Ho) 0.5)
AgHo-09Wan.tdb	1244.67	AG2HO_C11B (x(Ho) 0.33333) + LIQUID (x(Ho) 0.36615) + AGHO_B2 (x(Ho) 0.5)
AgHo-09Wan.tdb	1165.65	AG51HO14 (x(Ho) 0.22011) + LIQUID (x(Ho) 0.25926) + AG2HO_C11B (x(Ho) 0.33333)
AgHo-09Wan.tdb	1153.26	AGHO_B2 (x(Ho) 0.5) + LIQUID (x(Ho) 0.79938) + HCP_A3 (x(Ho) 0.99999)
AgHo-09Wan.tdb	1153.26	AGHO_B2 (x(Ho) 0.5) + LIQUID (x(Ho) 0.79946) + HCP_A3 (x(Ho) 0.99999)
AgHo-09Wan.tdb	1153.26	AGHO_B2 (x(Ho) 0.5) + LIQUID (x(Ho) 0.79945) + HCP_A3 (x(Ho) 0.99999)
AgHo-09Wan.tdb	1068.84	FCC_A1 (x(Ho) 0.01447) + LIQUID (x(Ho) 0.11552) + AG51HO14 (x(Ho) 0.2154)
AgHo-09Wan.tdb	1068.84	FCC_A1 (x(Ho) 0.01447) + LIQUID (x(Ho) 0.11551) + AG51HO14 (x(Ho) 0.2154)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Ag–Ho system (14)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1244.75	eutectic: L -> AgHo + Ag2Ho	L: Ho 0.366; AgHo: Ho 0.5; Ag2Ho: Ho 0.333	model	[1] Wang 2009	Table 5, p. 5, row 9 report
1243.15	eutectic: L -> AgHo + Ag2Ho	L: Ho 0.365; AgHo: Ho 0.5; Ag2Ho: Ho 0.333	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	Table 5, p. 5, row 7 report
1243.15	eutectic: L -> AgHo + Ag2Ho	L: Ho 0.365; AgHo: Ho 0.5; Ag2Ho: Ho 0.333	experimental	[1] Wang 2009 cites Gschneidner 1985 doi	Table 5, p. 5, row 8 report
1166.75	peritectic: L -> Ag51Ho14 + Ag2Ho	L: Ho 0.26; Ag51Ho14: Ho 0.22; Ag2Ho: Ho 0.333	model	[1] Wang 2009	Table 5, p. 5, row 15 report
1163.15	peritectic: L -> Ag51Ho14 + Ag2Ho	L: Ho 0.265; Ag51Ho14: Ho 0.222; Ag2Ho: Ho 0.333	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	Table 5, p. 5, row 13 report
1163.15	peritectic: L -> Ag51Ho14 + Ag2Ho	L: Ho 0.265; Ag51Ho14: Ho 0.244; Ag2Ho: Ho 0.333	experimental	[1] Wang 2009 cites Gschneidner 1985 doi	Table 5, p. 5, row 14 report
1153.25	eutectic: L -> (Ho) + AgHo	L: Ho 0.799; (Ho): Ho 1; AgHo: Ho 0.5	model	[1] Wang 2009	Table 5, p. 5, row 3 report
1153.15	eutectic: L -> (Ho) + AgHo	L: Ho 0.81; (Ho): Ho 1; AgHo: Ho 0.5	experimental	[1] Wang 2009 cites Gschneidner 1985 doi	Table 5, p. 5, row 2 report
1153.15	eutectic: L -> (Ho) + AgHo	L: Ho 0.81; (Ho): Ho 1; AgHo: Ho 0.5	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	Table 5, p. 5, row 1 report
1070.35	eutectic: L -> Ag51Ho14 + (Ag)	L: Ho 0.115; Ag51Ho14: Ho 0.215; (Ag): Ho 0.014	model	[1] Wang 2009	Table 5, p. 5, row 23 report
1068.15	eutectic: L -> Ag51Ho14 + (Ag)	L: Ho 0.115; Ag51Ho14: Ho 0.215; (Ag): Ho 0.016	experimental	[1] Wang 2009 cites Gschneidner 1985 doi	Table 5, p. 5, row 22 report
1060.15	eutectic: L -> Ag51Ho14 + (Ag)	Ag51Ho14: Ho 0.222; (Ag): Ho 0.016	experimental	[1] Wang 2009 cites Wunderlin 1963	Table 5, p. 5, row 19 report
1048.15	eutectic: L -> Ag51Ho14 + (Ag)	L: Ho 0.115; Ag51Ho14: Ho 0.222; (Ag): Ho 0.016	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	Table 5, p. 5, row 21 report
1038.15	eutectic: L -> Ag51Ho14 + (Ag)	Ag51Ho14: Ho 0.222; (Ag): Ho 0.016	experimental	[1] Wang 2009 cites Wunderlin 1965	Table 5, p. 5, row 20 report

Other properties

Phase transition (12)

Phase transition, Ag–Ho system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	1193.15 K	1193.15	Ag7Ho2	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	p. 2 report	Later, based on thermal analysis, metallography and X-ray methods, Gebhardt and Erdberg [15] investigated the phase diagram in the Ag-Ho system, and reported three stoichiometry compounds of the Ag7 Ho2 (melting point, 920 ◦ C), Ag2 Ho (melting point, 990 ◦ C) and AgHo (melting point, 1165 ◦ C), and also determined the maximum solid solubility of Ho in the fcc (Ag) (1.6 at.% Ho) and four eutectic…
Phase transition	1193.15 K	1193.15	congruent melting: L -> Ag51Ho14 L: Ho 0.222; Ag51Ho14: Ho 0.222	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	Table 5, p. 5, row 16 report
Phase transition	1193.15 K	1193.15	congruent melting: L -> Ag51Ho14 L: Ho 0.215; Ag51Ho14: Ho 0.215	experimental	[1] Wang 2009 cites Gschneidner 1985 doi	Table 5, p. 5, row 17 report
Phase transition	1194.05 K	1194.05	congruent melting: L -> Ag51Ho14 L: Ho 0.217; Ag51Ho14: Ho 0.217	model	[1] Wang 2009	Table 5, p. 5, row 18 report
Phase transition	1261.55 K	1261.55	congruent melting: L -> Ag2Ho L: Ho 0.333; Ag2Ho: Ho 0.333	model	[1] Wang 2009	Table 5, p. 5, row 12 report
Phase transition	1263.15 K	1263.15	Ag2Ho	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	p. 2 report	Later, based on thermal analysis, metallography and X-ray methods, Gebhardt and Erdberg [15] investigated the phase diagram in the Ag-Ho system, and reported three stoichiometry compounds of the Ag7 Ho2 (melting point, 920 ◦ C), Ag2 Ho (melting point, 990 ◦ C) and AgHo (melting point, 1165 ◦ C), and also determined the maximum solid solubility of Ho in the fcc (Ag) (1.6 at.% Ho) and four eutectic…
Phase transition	1263.15 K	1263.15	congruent melting: L -> Ag2Ho L: Ho 0.333; Ag2Ho: Ho 0.333	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	Table 5, p. 5, row 10 report
Phase transition	1263.15 K	1263.15	congruent melting: L -> Ag2Ho L: Ho 0.333; Ag2Ho: Ho 0.333	experimental	[1] Wang 2009 cites Gschneidner 1985 doi	Table 5, p. 5, row 11 report
Phase transition	1437.85 K	1437.85	congruent melting: L -> AgHo L: Ho 0.5; AgHo: Ho 0.5	model	[1] Wang 2009	Table 5, p. 5, row 6 report
Phase transition	1438.15 K	1438.15	AgHo	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	p. 2 report	Later, based on thermal analysis, metallography and X-ray methods, Gebhardt and Erdberg [15] investigated the phase diagram in the Ag-Ho system, and reported three stoichiometry compounds of the Ag7 Ho2 (melting point, 920 ◦ C), Ag2 Ho (melting point, 990 ◦ C) and AgHo (melting point, 1165 ◦ C), and also determined the maximum solid solubility of Ho in the fcc (Ag) (1.6 at.% Ho) and four eutectic…
Phase transition	1438.15 K	1438.15	congruent melting: L -> AgHo L: Ho 0.5; AgHo: Ho 0.5	experimental	[1] Wang 2009 cites Gschneidner 1985 doi	Table 5, p. 5, row 5 report
Phase transition	1438.15 K	1438.15	congruent melting: L -> AgHo L: Ho 0.5; AgHo: Ho 0.5	experimental	[1] Wang 2009 cites Gebhardt 1966 doi	Table 5, p. 5, row 4 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–Tb and Ag–Ho systems, Journal of Alloys and Compounds 484, 102-107 (2009). doi:10.1016/j.jallcom.2009.04.037

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}
}