Dy–Pd system

55 accepted literature values from 2 paper(s) (experimental 17, model 38); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (14) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	17
model	38

Accepted values by property group
Property group	Values
invariant reaction	24
phase transition	10
formation	21

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
DyPd-00Du.tdb	Z. Du, H. Yang, Y. Xu, J. Alloys Compd., 302, 199-203(2000). doi:10.1016/S0925-8388(00)00693-9	`0b3add84b94841fe61a137c93b103dd0cf73e4829c6033832f2c910280338601`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
DyPd-00Du.tdb	1654.15	HCP_A3 (x(Pd) 0) + BCC_A2 (x(Pd) 0) + LIQUID (x(Pd) 0.01514)
DyPd-00Du.tdb	1637.5	DYPD_B2 (x(Pd) 0.49997) + LIQUID (x(Pd) 0.54601) + DY3PD4 (x(Pd) 0.57143)
DyPd-00Du.tdb	1567.59	LIQUID (x(Pd) 0.65082) + DYPD2 (x(Pd) 0.66667) + DYPD3_L12 (x(Pd) 0.75)
DyPd-00Du.tdb	1567.59	LIQUID (x(Pd) 0.65091) + DYPD2 (x(Pd) 0.66667) + DYPD3_L12 (x(Pd) 0.75)
DyPd-00Du.tdb	1517.95	DY3PD4 (x(Pd) 0.57143) + DY2PD3_HT (x(Pd) 0.6) + LIQUID (x(Pd) 0.6213)
DyPd-00Du.tdb	1517.94	DY3PD4 (x(Pd) 0.57143) + DY2PD3_HT (x(Pd) 0.6) + LIQUID (x(Pd) 0.62135)
DyPd-00Du.tdb	1496.88	DY2PD3_HT (x(Pd) 0.6) + LIQUID (x(Pd) 0.62751) + DYPD2 (x(Pd) 0.66667)
DyPd-00Du.tdb	1496.88	DY2PD3_HT (x(Pd) 0.6) + LIQUID (x(Pd) 0.62748) + DYPD2 (x(Pd) 0.66667)
DyPd-00Du.tdb	1496.88	DY2PD3_HT (x(Pd) 0.6) + LIQUID (x(Pd) 0.62754) + DYPD2 (x(Pd) 0.66667)
DyPd-00Du.tdb	1489.52	DYPD3_L12 (x(Pd) 0.78339) + LIQUID (x(Pd) 0.85233) + FCC_A1 (x(Pd) 0.88458)
DyPd-00Du.tdb	1388.01	DY3PD4 (x(Pd) 0.57143) + DY2PD3_LT (x(Pd) 0.6) + DY2PD3_HT (x(Pd) 0.6)
DyPd-00Du.tdb	1388.01	DY2PD3_HT (x(Pd) 0.6) + DY2PD3_LT (x(Pd) 0.6) + DYPD2 (x(Pd) 0.66667)
DyPd-00Du.tdb	1222.27	LIQUID (x(Pd) 0.38012) + DY3PD2_D5A (x(Pd) 0.4) + DYPD_B2 (x(Pd) 0.48783)
DyPd-00Du.tdb	1153.17	DY5PD2 (x(Pd) 0.28571) + LIQUID (x(Pd) 0.32433) + DY3PD2_D5A (x(Pd) 0.4)
DyPd-00Du.tdb	1153.17	DY5PD2 (x(Pd) 0.28571) + LIQUID (x(Pd) 0.32451) + DY3PD2_D5A (x(Pd) 0.4)
DyPd-00Du.tdb	1135.64	HCP_A3 (x(Pd) 0) + LIQUID (x(Pd) 0.22008) + DY5PD2 (x(Pd) 0.28571)
DyPd-00Du.tdb	1071.77	DY3PD2_D5A (x(Pd) 0.4) + DYPD_B27 (x(Pd) 0.49792) + DYPD_B2 (x(Pd) 0.49858)
DyPd-00Du.tdb	1071.77	DY3PD2_D5A (x(Pd) 0.4) + DYPD_B27 (x(Pd) 0.49791) + DYPD_B2 (x(Pd) 0.49857)
DyPd-00Du.tdb	1043.48	DYPD_B2 (x(Pd) 0.5) + DYPD_B27 (x(Pd) 0.5) + DY3PD4 (x(Pd) 0.57143)
DyPd-00Du.tdb	767.03	DYPD3_L12 (x(Pd) 0.76622) + DYPD7 (x(Pd) 0.875) + FCC_A1 (x(Pd) 0.88792)
DyPd-00Du.tdb	767.03	DYPD3_L12 (x(Pd) 0.76622) + DYPD7 (x(Pd) 0.875) + FCC_A1 (x(Pd) 0.88792)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Dy–Pd system (24)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1654	Liq.+bcc(Dy)->hcp(Dy)	L: Pd 0.0153; bcc(Dy): Pd 0; hcp(Dy): Pd 0	model	[1] Du 2000	Table 2, p. 4, row 1 report
1654	Liq.+bcc(Dy)->hcp(Dy)	L: Pd 0.01; bcc(Dy): Pd 0; hcp(Dy): Pd 0	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 2 report
1638	eutectic: Liq.->βDyPd+Dy3Pd4	L: Pd 0.53; βDyPd: Pd 0.5; Dy3Pd4: Pd 0.571429	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 16 report
1638	eutectic: Liq.->βDyPd+Dy3Pd4	L: Pd 0.546; βDyPd: Pd 0.5; Dy3Pd4: Pd 0.571429	model	[1] Du 2000	Table 2, p. 4, row 15 report
1568	Liq.+DyPd3->DyPd2	L: Pd 0.6508; DyPd3: Pd 0.75; DyPd2: Pd 0.666667	model	[1] Du 2000	Table 2, p. 4, row 27 report
1568	Liq.+DyPd3->DyPd2	L: Pd 0.66; DyPd3: Pd 0.75; DyPd2: Pd 0.666667	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 28 report
1518	Liq.+Dy3Pd4->βDy2Pd3	L: Pd 0.6213; Dy3Pd4: Pd 0.571429; βDy2Pd3: Pd 0.6	model	[1] Du 2000	Table 2, p. 4, row 21 report
1518	Liq.+Dy3Pd4->βDy2Pd3	L: Pd 0.625; Dy3Pd4: Pd 0.571429; βDy2Pd3: Pd 0.6	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 22 report
1498	eutectic: Liq.->βDy2Pd3+DyPd2	L: Pd 0.635; βDy2Pd3: Pd 0.6; DyPd2: Pd 0.666667	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 24 report
1497	eutectic: Liq.->βDy2Pd3+DyPd2	L: Pd 0.6275; βDy2Pd3: Pd 0.6; DyPd2: Pd 0.666667	model	[1] Du 2000	Table 2, p. 4, row 23 report
1490	eutectic: Liq.->DyPd3+fcc(Pd)	L: Pd 0.8523; DyPd3: Pd 0.7834; fcc(Pd): Pd 0.8846	model	[1] Du 2000	Table 2, p. 4, row 31 report
1490	eutectic: Liq.->DyPd3+fcc(Pd)	L: Pd 0.85; DyPd3: Pd 0.79; fcc(Pd): Pd 0.877	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 32 report
1223	Liq.+βDyPd->Dy3Pd2	L: Pd 0.33; βDyPd: Pd 0.49; Dy3Pd2: Pd 0.4	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 10 report
1222	Liq.+βDyPd->Dy3Pd2	L: Pd 0.3801; βDyPd: Pd 0.4878; Dy3Pd2: Pd 0.4	model	[1] Du 2000	Table 2, p. 4, row 9 report
1153	eutectic: Liq.->Dy5Pd2+Dy3Pd2	L: Pd 0.3243; Dy5Pd2: Pd 0.285714; Dy3Pd2: Pd 0.4	model	[1] Du 2000	Table 2, p. 4, row 7 report
1153	eutectic: Liq.->Dy5Pd2+Dy3Pd2	L: Pd 0.31; Dy5Pd2: Pd 0.285714; Dy3Pd2: Pd 0.4	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 8 report
1136	eutectic: Liq.->hcp(Dy)+Dy5Pd2	L: Pd 0.2201; hcp(Dy): Pd 0; Dy5Pd2: Pd 0.285714	model	[1] Du 2000	Table 2, p. 4, row 3 report
1136	eutectic: Liq.->hcp(Dy)+Dy5Pd2	L: Pd 0.235; hcp(Dy): Pd 0; Dy5Pd2: Pd 0.285714	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 4 report
1071	Dy3Pd2+βDyPd->αDyPd	Dy3Pd2: Pd 0.49; βDyPd: Pd 0.49; αDyPd: Pd 0.5	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 12 report
1071	Dy3Pd2+βDyPd->αDyPd	Dy3Pd2: Pd 0.4986; βDyPd: Pd 0.4979; αDyPd: Pd 0.5	model	[1] Du 2000	Table 2, p. 4, row 11 report
1043	βDyPd->αDyPd+Dy3Pd4	βDyPd: Pd 0.5; αDyPd: Pd 0.5; Dy3Pd4: Pd 0.571429	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 18 report
1043	βDyPd->αDyPd+Dy3Pd4	βDyPd: Pd 0.5; αDyPd: Pd 0.5; Dy3Pd4: Pd 0.571429	model	[1] Du 2000	Table 2, p. 4, row 17 report
767	DyPd3+fcc(Pd)->DyPd7	DyPd3: Pd 0.7662; fcc(Pd): Pd 0.8879; DyPd7: Pd 0.875	model	[1] Du 2000	Table 2, p. 4, row 33 report
767	DyPd3+fcc(Pd)->DyPd7	DyPd3: Pd 0.76; fcc(Pd): Pd 0.895; DyPd7: Pd 0.875	experimental	[1] Du 2000 cites Takao 1989 doi	Table 2, p. 4, row 34 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, Dy–Pd system (7)
Phase	Compound	Value	T (K)	Class	MP DFT (kJ/mol-atom)	OQMD DFT (kJ/mol-atom)	Source	Location
Pd2Dy	DyPd2	-81.376 kJ/mol-atom	298.15	model	-60.081 (mp-aaacimvv)	-79.201 (oqmd-1592414)	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 63 report
Pd2Dy5		-63.19 kJ/mol-atom	298.15	model			[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 14 report
Pd3Dy	DyPd3	-79.821 kJ/mol-atom	298.15	model	-86.399 (mp-aaaaaber)	-86.219 (oqmd-18314)	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 5 report
Pd3Dy	DyPd3	-48.326 kJ/mol-atom	298.15	model	-86.399 (mp-aaaaaber)	-86.219 (oqmd-18314)	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 75 report
Pd4Dy3	Dy3Pd4	-81.371 kJ/mol-atom	298.15	model	-90.676 (mp-aaackvsx)	-90.926 (oqmd-29906)	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 37 report
Pd7Dy		-48.326 kJ/mol-atom	298.15	model			[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 75 report
PdDy	DyPd	-80.946 kJ/mol-atom	298.15	model	-86.405 (mp-aaaaadhq)	-89.821 (oqmd-29907)	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 25 report

Other properties

Phase transition (10)

Phase transition, Dy–Pd system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1168 K	1168	Liq.->Dy5Pd2 L: Pd 0.285714; Dy5Pd2: Pd 0.285714	model	[1] Du 2000	Table 2, p. 4, row 5 report
Phase transition	1168 K	1168	Liq.->Dy5Pd2 L: Pd 0.285714; Dy5Pd2: Pd 0.285714	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 6 report
Phase transition	1388 K	1388	βDy2Pd3->αDy2Pd3 βDy2Pd3: Pd 0.6; αDy2Pd3: Pd 0.6	model	[1] Du 2000	Table 2, p. 4, row 25 report
Phase transition	1388 K	1388	βDy2Pd3->αDy2Pd3 βDy2Pd3: Pd 0.6; αDy2Pd3: Pd 0.6	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 26 report
Phase transition	1673 K	1673	Liq.->Dy3Pd4 L: Pd 0.571429; Dy3Pd4: Pd 0.571429	model	[1] Du 2000	Table 2, p. 4, row 19 report
Phase transition	1673 K	1673	Liq.->Dy3Pd4 L: Pd 0.571429; Dy3Pd4: Pd 0.571429	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 20 report
Phase transition	1723 K	1723	Liq.->βDyPd βDyPd: Pd 0.4996	model	[1] Du 2000	Table 2, p. 4, row 13 report
Phase transition	1723 K	1723	Liq.->βDyPd L: Pd 0.49; βDyPd: Pd 0.5	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 14 report
Phase transition	1983 K	1983	Liq.->DyPd3 DyPd3: Pd 0.7505	model	[1] Du 2000	Table 2, p. 4, row 29 report
Phase transition	1983 K	1983	Liq.->DyPd3 DyPd3: Pd 0.75	experimental	[1] Du 2000 cites Loebich 1973 doi	Table 2, p. 4, row 30 report

Formation (14)

Formation, Dy–Pd system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Entropy of formation printed: ΔfS	5.2 J/mol-atom/K	298.15	Pd2Dy alloy: Pd 0.666667	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 63 report
Entropy of formation	11.72 J/mol-atom/K	298.15	Pd2Dy5 alloy: Pd 0.285714	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 14 report
Entropy of formation printed: ΔfS	8.268 J/mol-atom/K	298.15	Pd3Dy alloy: Pd 0.75	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 75 report
Entropy of formation printed: ΔfS	7.11 J/mol-atom/K	298.15	Pd3Dy alloy: Pd 0.75	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 5 report
Entropy of formation	2.966 J/mol-atom/K	298.15	Pd4Dy3 alloy: Pd 0.571429	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 37 report
Entropy of formation	8.268 J/mol-atom/K	298.15	Pd7Dy alloy: Dy 0.125, Pd 0.875	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 75 report
Entropy of formation	3.5 J/mol-atom/K	298.15	PdDy alloy: Pd 0.5	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 25 report
Gibbs energy of formation printed: Gibbs free energy of formation	-82.9264 kJ/mol-atom	298.15	Pd2Dy alloy: Pd 0.666667	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 63 report
Gibbs energy of formation printed: ΔfG	-66.6843 kJ/mol-atom	298.15	Pd2Dy5 alloy: Pd 0.285714	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 14 report
Gibbs energy of formation printed: ΔfG	-50.7911 kJ/mol-atom	298.15	Pd3Dy alloy: Pd 0.75	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 75 report
Gibbs energy of formation printed: ΔfG	-81.9408 kJ/mol-atom	298.15	Pd3Dy alloy: Pd 0.75	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 5 report
Gibbs energy of formation printed: ΔfG	-82.2553 kJ/mol-atom	298.15	Pd4Dy3 alloy: Pd 0.571429	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 37 report
Gibbs energy of formation printed: Gibbs free energy of formation	-50.7911 kJ/mol-atom	298.15	Pd7Dy alloy: Dy 0.125, Pd 0.875	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 75 report
Gibbs energy of formation printed: ΔfG	-81.9895 kJ/mol-atom	298.15	PdDy alloy: Pd 0.5	model	[2] Kardellass 2020 cites Du 2000 doi	Table 3, p. 5, row 25 report

Sources

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

Zhenmin Du, Haifang Yang, Yunhua Xu, Thermodynamic modeling of the Dy–Pd system, Journal of Alloys and Compounds 302, 199-203 (2000). doi:10.1016/s0925-8388(00)00693-9
Said Kardellass, Colette Servant, Isabelle Drouelle, Fatima Zahra Chrifi-Alaoui, Mohamed Idbenali, Alyen Abahazem et al., Calphad-type assessment of the Pd-Yb binary system supported by first-principles calculations – Part II: Results, Materials Today: Proceedings 24, 140-150 (2020). doi:10.1016/j.matpr.2019.08.196

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}
}