# Dy–Pd system

> Dy–Pd system: 55 accepted literature values (invariant reaction 24, formation 21, phase transition 10) and 1 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/DY-PD.html · Markdown: https://data.orchid-project.org/systems/DY-PD.md

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

Data: [JSON](https://data.orchid-project.org/literature/systems/DY-PD.json) · [CSV](https://data.orchid-project.org/systems/DY-PD.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#DY-PD) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#DY-PD/DyPd-00Du.json) · [phases (14)](https://data.orchid-project.org/phases/pages/DY-PD.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/DY-PD.html) · [Markdown](https://data.orchid-project.org/systems/DY-PD.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 17 |
| model | 38 |

Table: 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.

Table: 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](https://doi.org/10.1016/S0925-8388%2800%2900693-9) | `0b3add84b94841fe61a137c93b103dd0cf73e4829c6033832f2c910280338601` | [viewer](https://orchid-project.org/phase-diagrams/#DY-PD/DyPd-00Du.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/DyPd-00Du.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/DyPd-00Du.json) |

Table: 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](https://data.orchid-project.org/hulls/dft-mp/DY/DY-PD.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/DY/DY-PD.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Dy–Pd system (24)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 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; `ORC-FIPHA6WY3E` |  |
| 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](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 2; `ORC-OYYNW7EKI6` |  |
| 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](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 16; `ORC-AGVJSCQ3LI` |  |
| 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; `ORC-HBD4R2SEAW` |  |
| 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; `ORC-JASAXFNW3V` |  |
| 1568 | Liq.+DyPd3->DyPd2 | L: Pd 0.66; DyPd3: Pd 0.75; DyPd2: Pd 0.666667 | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 28; `ORC-S5Z26BSKRB` |  |
| 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; `ORC-EXEVJ26YT2` |  |
| 1518 | Liq.+Dy3Pd4->βDy2Pd3 | L: Pd 0.625; Dy3Pd4: Pd 0.571429; βDy2Pd3: Pd 0.6 | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 22; `ORC-L2KH5OSH3I` |  |
| 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](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 24; `ORC-HDI5M3QE2V` |  |
| 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; `ORC-6JTVOQITC6` |  |
| 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; `ORC-NG4PIXZQRP` |  |
| 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](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 32; `ORC-ZRKRW2DHJM` |  |
| 1223 | Liq.+βDyPd->Dy3Pd2 | L: Pd 0.33; βDyPd: Pd 0.49; Dy3Pd2: Pd 0.4 | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 10; `ORC-JVX4XZJBPW` |  |
| 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; `ORC-IPVNIVQF6P` |  |
| 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; `ORC-57DWNRRGQJ` |  |
| 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](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 8; `ORC-FH76DLDKY6` |  |
| 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; `ORC-5O6PDK77DE` |  |
| 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](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 4; `ORC-CFQQ55VABE` |  |
| 1071 | Dy3Pd2+βDyPd->αDyPd | Dy3Pd2: Pd 0.49; βDyPd: Pd 0.49; αDyPd: Pd 0.5 | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 12; `ORC-O2XUUYPVWP` |  |
| 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; `ORC-VWG4ZIZ26R` |  |
| 1043 | βDyPd->αDyPd+Dy3Pd4 | βDyPd: Pd 0.5; αDyPd: Pd 0.5; Dy3Pd4: Pd 0.571429 | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 18; `ORC-LM653WVW5Z` |  |
| 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; `ORC-LUS6XBH2KP` |  |
| 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; `ORC-C5LM7SJS65` |  |
| 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](https://doi.org/10.1016/0022-5088%2889%2990076-3) | Table 2, p. 4, row 34; `ORC-K7PPXQPSFN` |  |

## 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](https://data.orchid-project.org/literature/dft_parity.json).

Table: 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 | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Pd2Dy | [DyPd2](https://data.orchid-project.org/compounds/DyPd2.html) | -81.376 kJ/mol-atom | 298.15 | model | -60.081 (mp-aaacimvv) | -79.201 (oqmd-1592414) | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 63; `ORC-TNRISGYDWD.8a8ab8` |  |
| Pd2Dy5 |  | -63.19 kJ/mol-atom | 298.15 | model |  |  | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 14; `ORC-DWCYFZNO26.d4edc5` |  |
| Pd3Dy | [DyPd3](https://data.orchid-project.org/compounds/DyPd3.html) | -79.821 kJ/mol-atom | 298.15 | model | -86.399 (mp-aaaaaber) | -86.219 (oqmd-18314) | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 5; `ORC-UHGWGPQ3FX.6e5d2a` |  |
| Pd3Dy | [DyPd3](https://data.orchid-project.org/compounds/DyPd3.html) | -48.326 kJ/mol-atom | 298.15 | model | -86.399 (mp-aaaaaber) | -86.219 (oqmd-18314) | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 75; `ORC-7ETNNTSBI7.238b55` |  |
| Pd4Dy3 | [Dy3Pd4](https://data.orchid-project.org/compounds/Dy3Pd4.html) | -81.371 kJ/mol-atom | 298.15 | model | -90.676 (mp-aaackvsx) | -90.926 (oqmd-29906) | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 37; `ORC-QXZGA27ACY.b6f28c` |  |
| Pd7Dy |  | -48.326 kJ/mol-atom | 298.15 | model |  |  | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 75; `ORC-7ETNNTSBI7.3b13f6` |  |
| PdDy | [DyPd](https://data.orchid-project.org/compounds/DyPd.html) | -80.946 kJ/mol-atom | 298.15 | model | -86.405 (mp-aaaaadhq) | -89.821 (oqmd-29907) | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 25; `ORC-AYOLLN3NCG.768c6c` |  |

## Other properties

### Phase transition (10)

Table: Phase transition, Dy–Pd system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| 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; `ORC-7BZS7FOD7N` |  |
| Phase transition | 1168 K | 1168 | Liq.->Dy5Pd2; _L: Pd 0.285714; Dy5Pd2: Pd 0.285714_ | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 6; `ORC-SNLS6Y25ZG` |  |
| 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; `ORC-DH3P7GH4Q4` |  |
| Phase transition | 1388 K | 1388 | βDy2Pd3->αDy2Pd3; _βDy2Pd3: Pd 0.6; αDy2Pd3: Pd 0.6_ | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 26; `ORC-MYL5HLSOW2` |  |
| 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; `ORC-336M5HZ2H5` |  |
| Phase transition | 1673 K | 1673 | Liq.->Dy3Pd4; _L: Pd 0.571429; Dy3Pd4: Pd 0.571429_ | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 20; `ORC-WXYIQ25YTT` |  |
| Phase transition | 1723 K | 1723 | Liq.->βDyPd; _βDyPd: Pd 0.4996_ | model | [1] Du 2000 | Table 2, p. 4, row 13; `ORC-EDDLLFODRG` |  |
| Phase transition | 1723 K | 1723 | Liq.->βDyPd; _L: Pd 0.49; βDyPd: Pd 0.5_ | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 14; `ORC-MFI4ZV6DTR` |  |
| Phase transition | 1983 K | 1983 | Liq.->DyPd3; _DyPd3: Pd 0.7505_ | model | [1] Du 2000 | Table 2, p. 4, row 29; `ORC-SC465T4DI6` |  |
| Phase transition | 1983 K | 1983 | Liq.->DyPd3; _DyPd3: Pd 0.75_ | experimental | [1] Du 2000; _cites Loebich 1973_ [doi](https://doi.org/10.1016/0022-5088%2873%2990006-4) | Table 2, p. 4, row 30; `ORC-SWNW3OTD6H` |  |

### Formation (14)

Table: Formation, Dy–Pd system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 63; `ORC-TNRISGYDWD.975fce` |  |
| Entropy of formation | 11.72 J/mol-atom/K | 298.15 | Pd2Dy5; _alloy: Pd 0.285714_ | model | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 14; `ORC-DWCYFZNO26.91be71` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 75; `ORC-7ETNNTSBI7.94d4a4` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 5; `ORC-UHGWGPQ3FX.057da1` |  |
| Entropy of formation | 2.966 J/mol-atom/K | 298.15 | Pd4Dy3; _alloy: Pd 0.571429_ | model | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 37; `ORC-QXZGA27ACY.48866e` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 75; `ORC-7ETNNTSBI7.5cba5a` |  |
| Entropy of formation | 3.5 J/mol-atom/K | 298.15 | PdDy; _alloy: Pd 0.5_ | model | [2] Kardellass 2020; _cites Du 2000_ [doi](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 25; `ORC-AYOLLN3NCG.92d35a` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 63; `ORC-TNRISGYDWD.30fc5c` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 14; `ORC-DWCYFZNO26.30d0a1` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 75; `ORC-7ETNNTSBI7.39eb85` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 5; `ORC-UHGWGPQ3FX.77fc91` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 37; `ORC-QXZGA27ACY.4163e8` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 75; `ORC-7ETNNTSBI7.7518d8` |  |
| 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](https://doi.org/10.1016/s0925-8388%2800%2901144-0) | Table 3, p. 5, row 25; `ORC-AYOLLN3NCG.cccb87` |  |

## Sources

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

1. 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](https://doi.org/10.1016/s0925-8388%2800%2900693-9)
2. 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](https://doi.org/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). https://doi.org/10.5281/zenodo.23735569
- R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/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). https://doi.org/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). https://doi.org/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.

```bibtex
@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}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).