# Gd–Ni system

> Gd–Ni system: 52 accepted literature values (invariant reaction 38, phase transition 14) and 3 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/GD-NI.html · Markdown: https://data.orchid-project.org/systems/GD-NI.md

52 accepted literature values from 2 paper(s) (experimental 37, model 12, unspecified 3); 3 calculated phase diagram(s). 8 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/GD-NI.json) · [CSV](https://data.orchid-project.org/systems/GD-NI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#GD-NI) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#GD-NI/GdNi-15Rah.json) · [phases (14)](https://data.orchid-project.org/phases/pages/GD-NI.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/GD-NI.html) · [Markdown](https://data.orchid-project.org/systems/GD-NI.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 37 |
| model | 12 |
| unspecified | 3 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 38 |
| phase transition | 14 |

## 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 |
|---|---|---|---|
| GdNi-15Rah.tdb | Z. Rahou, K. Mahdouk, J. Alloys Compd., 648, 346-52(2015). [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201) | `8a33fefaa05b5cf5cd6d5b1e0076884360cccf525c86d30e940a2010e8b78f86` | [viewer](https://orchid-project.org/phase-diagrams/#GD-NI/GdNi-15Rah.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/GdNi-15Rah.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/GdNi-15Rah.json) |
| GdNi-96Su-oldGd.tdb | X. Su, W. Zhang, Z. Du, Rare Met., 15, 275-81(1996). | `60b9fc181cb2901aced0de039c4374d494147d7ba099ea59d061f7bd965a512e` | [viewer](https://orchid-project.org/phase-diagrams/#GD-NI/GdNi-96Su-oldGd.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su-oldGd.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/GdNi-96Su-oldGd.json) |
| GdNi-96Su.tdb | X. Su, W. Zhang, Z. Du, Rare Met., 15, 275-81(1996). | `3dc05d2093b96cfdafea0cb42e4ba45fbdd46b902b06c8ee9ed5e3aca9bebec8` | [viewer](https://orchid-project.org/phase-diagrams/#GD-NI/GdNi-96Su.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/GdNi-96Su.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/GdNi-96Su.json) |

Table: Calculated three-phase invariants (model, mole fraction of the second component)

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| GdNi-15Rah.tdb | 1552.56 | GDNI5_D2D (x(Ni) 0.83333) + LIQUID (x(Ni) 0.92562) + FCC_A1 (x(Ni) 0.99983) |
| GdNi-15Rah.tdb | 1552.56 | GDNI5_D2D (x(Ni) 0.83333) + LIQUID (x(Ni) 0.9257) + FCC_A1 (x(Ni) 0.99983) |
| GdNi-15Rah.tdb | 1532.2 | LIQUID (x(Ni) 0.7175) + GD2NI7 (x(Ni) 0.77778) + GDNI5_D2D (x(Ni) 0.83333) |
| GdNi-15Rah.tdb | 1532.2 | LIQUID (x(Ni) 0.71765) + GD2NI7 (x(Ni) 0.77778) + GDNI5_D2D (x(Ni) 0.83333) |
| GdNi-15Rah.tdb | 1508.26 | BCC_A2 (x(Ni) 0.00109) + HCP_A3 (x(Ni) 0.00113) + LIQUID (x(Ni) 0.04116) |
| GdNi-15Rah.tdb | 1494.63 | LIQUID (x(Ni) 0.69768) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-15Rah.tdb | 1494.63 | LIQUID (x(Ni) 0.69791) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-15Rah.tdb | 1494.63 | LIQUID (x(Ni) 0.69757) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-15Rah.tdb | 1414.86 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + FCC_A1 (x(Ni) 0.99996) |
| GdNi-15Rah.tdb | 1414.86 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + FCC_A1 (x(Ni) 0.99996) |
| GdNi-15Rah.tdb | 1414.86 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + FCC_A1 (x(Ni) 0.99996) |
| GdNi-15Rah.tdb | 1349.39 | LIQUID (x(Ni) 0.63873) + GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) |
| GdNi-15Rah.tdb | 1349.39 | LIQUID (x(Ni) 0.63892) + GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) |
| GdNi-15Rah.tdb | 1349.39 | LIQUID (x(Ni) 0.63864) + GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) |
| GdNi-15Rah.tdb | 1173.18 | GDNI_B33 (x(Ni) 0.5) + LIQUID (x(Ni) 0.55892) + GDNI2_C15 (x(Ni) 0.66667) |
| GdNi-15Rah.tdb | 1173.18 | GDNI_B33 (x(Ni) 0.5) + LIQUID (x(Ni) 0.55884) + GDNI2_C15 (x(Ni) 0.66667) |
| GdNi-15Rah.tdb | 1173.18 | GDNI_B33 (x(Ni) 0.5) + LIQUID (x(Ni) 0.55895) + GDNI2_C15 (x(Ni) 0.66667) |
| GdNi-15Rah.tdb | 1038.62 | HCP_A3 (x(Ni) 6.300e-4) + GD3NI_HT (x(Ni) 0.25) + LIQUID (x(Ni) 0.3215) |
| GdNi-15Rah.tdb | 1038.62 | HCP_A3 (x(Ni) 6.300e-4) + GD3NI_HT (x(Ni) 0.25) + LIQUID (x(Ni) 0.32155) |
| GdNi-15Rah.tdb | 976.68 | GD3NI_HT (x(Ni) 0.25) + LIQUID (x(Ni) 0.36414) + GDNI_B33 (x(Ni) 0.5) |
| GdNi-15Rah.tdb | 976.68 | GD3NI_HT (x(Ni) 0.25) + LIQUID (x(Ni) 0.36419) + GDNI_B33 (x(Ni) 0.5) |
| GdNi-15Rah.tdb | 910.71 | HCP_A3 (x(Ni) 1.800e-4) + GD3NI_D011 (x(Ni) 0.25) + GD3NI_HT (x(Ni) 0.25) |
| GdNi-15Rah.tdb | 910.71 | GD3NI_HT (x(Ni) 0.25) + GD3NI_D011 (x(Ni) 0.25) + GDNI_B33 (x(Ni) 0.5) |
| GdNi-15Rah.tdb | 910.71 | HCP_A3 (x(Ni) 1.800e-4) + GD3NI_D011 (x(Ni) 0.25) + GD3NI_HT (x(Ni) 0.25) |
| GdNi-15Rah.tdb | 910.71 | HCP_A3 (x(Ni) 1.800e-4) + GD3NI_HT (x(Ni) 0.25) + GD3NI_D011 (x(Ni) 0.25) |
| GdNi-96Su-oldGd.tdb | 1587 | BCC_A2 (x(Ni) 0) + LIQUID (x(Ni) 0) + GDNI5_D2D (x(Ni) 0.83333) |
| GdNi-96Su-oldGd.tdb | 1557.06 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.92773) |
| GdNi-96Su-oldGd.tdb | 1557.06 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.92772) |
| GdNi-96Su-oldGd.tdb | 1557.06 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.92776) |
| GdNi-96Su-oldGd.tdb | 1550.67 | GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.93157) + FCC_A1 (x(Ni) 0.99994) |
| GdNi-96Su-oldGd.tdb | 1550.67 | GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.93157) + FCC_A1 (x(Ni) 0.99994) |
| GdNi-96Su-oldGd.tdb | 1550.67 | GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.93158) + FCC_A1 (x(Ni) 0.99994) |
| GdNi-96Su-oldGd.tdb | 1540.66 | LIQUID (x(Ni) 0.71708) + GDNI4 (x(Ni) 0.8) + GDNI5_D2D (x(Ni) 0.83333) |
| GdNi-96Su-oldGd.tdb | 1540.66 | LIQUID (x(Ni) 0.7171) + GDNI4 (x(Ni) 0.8) + GDNI5_D2D (x(Ni) 0.83333) |
| GdNi-96Su-oldGd.tdb | 1535.04 | BCC_A2 (x(Ni) 9.600e-4) + HCP_A3 (x(Ni) 9.800e-4) + LIQUID (x(Ni) 0.02776) |
| GdNi-96Su-oldGd.tdb | 1477.65 | LIQUID (x(Ni) 0.69558) + GD2NI7 (x(Ni) 0.77778) + GDNI4 (x(Ni) 0.8) |
| GdNi-96Su-oldGd.tdb | 1477.65 | LIQUID (x(Ni) 0.69556) + GD2NI7 (x(Ni) 0.77778) + GDNI4 (x(Ni) 0.8) |
| GdNi-96Su-oldGd.tdb | 1477.65 | LIQUID (x(Ni) 0.69561) + GD2NI7 (x(Ni) 0.77778) + GDNI4 (x(Ni) 0.8) |
| GdNi-96Su-oldGd.tdb | 1365.16 | LIQUID (x(Ni) 0.66045) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-96Su-oldGd.tdb | 1365.16 | LIQUID (x(Ni) 0.66043) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-96Su-oldGd.tdb | 1365.16 | LIQUID (x(Ni) 0.6605) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-96Su-oldGd.tdb | 1275.43 | LIQUID (x(Ni) 0.63579) + GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) |
| GdNi-96Su-oldGd.tdb | 1275.43 | LIQUID (x(Ni) 0.63575) + GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) |
| GdNi-96Su-oldGd.tdb | 1160.47 | GDNI_B33 (x(Ni) 0.5) + LIQUID (x(Ni) 0.5925) + GDNI2_C15 (x(Ni) 0.66667) |
| GdNi-96Su-oldGd.tdb | 1006.66 | HCP_A3 (x(Ni) 7.300e-4) + GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.28687) |
| GdNi-96Su-oldGd.tdb | 1006.66 | HCP_A3 (x(Ni) 7.300e-4) + GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.28692) |
| GdNi-96Su-oldGd.tdb | 961.3 | LIQUID (x(Ni) 0.37058) + GD3NI2 (x(Ni) 0.4) + GDNI_B33 (x(Ni) 0.5) |
| GdNi-96Su-oldGd.tdb | 961.3 | LIQUID (x(Ni) 0.37067) + GD3NI2 (x(Ni) 0.4) + GDNI_B33 (x(Ni) 0.5) |
| GdNi-96Su-oldGd.tdb | 909.38 | GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.33997) + GD3NI2 (x(Ni) 0.4) |
| GdNi-96Su-oldGd.tdb | 909.38 | GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.33993) + GD3NI2 (x(Ni) 0.4) |
| GdNi-96Su-oldGd.tdb | 909.38 | GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.34006) + GD3NI2 (x(Ni) 0.4) |
| GdNi-96Su-oldGd.tdb | 303.74 | GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-96Su.tdb | 1586.11 | BCC_A2 (x(Ni) 0) + LIQUID (x(Ni) 0) + GDNI5_D2D (x(Ni) 0.83333) |
| GdNi-96Su.tdb | 1556.64 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.9276) |
| GdNi-96Su.tdb | 1556.64 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.92759) |
| GdNi-96Su.tdb | 1556.64 | GDNI5_D2D (x(Ni) 0.83333) + GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.92766) |
| GdNi-96Su.tdb | 1550.23 | GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.93138) + FCC_A1 (x(Ni) 0.99994) |
| GdNi-96Su.tdb | 1550.23 | GD2NI17 (x(Ni) 0.89474) + LIQUID (x(Ni) 0.93146) + FCC_A1 (x(Ni) 0.99994) |
| GdNi-96Su.tdb | 1538.47 | LIQUID (x(Ni) 0.71678) + GDNI4 (x(Ni) 0.8) + GDNI5_D2D (x(Ni) 0.83333) |
| GdNi-96Su.tdb | 1538.47 | LIQUID (x(Ni) 0.7168) + GDNI4 (x(Ni) 0.8) + GDNI5_D2D (x(Ni) 0.83333) |
| GdNi-96Su.tdb | 1508.29 | BCC_A2 (x(Ni) 0.00122) + HCP_A3 (x(Ni) 0.00126) + LIQUID (x(Ni) 0.04245) |
| GdNi-96Su.tdb | 1474.58 | LIQUID (x(Ni) 0.69515) + GD2NI7 (x(Ni) 0.77778) + GDNI4 (x(Ni) 0.8) |
| GdNi-96Su.tdb | 1474.58 | LIQUID (x(Ni) 0.69514) + GD2NI7 (x(Ni) 0.77778) + GDNI4 (x(Ni) 0.8) |
| GdNi-96Su.tdb | 1474.58 | LIQUID (x(Ni) 0.69525) + GD2NI7 (x(Ni) 0.77778) + GDNI4 (x(Ni) 0.8) |
| GdNi-96Su.tdb | 1358.03 | LIQUID (x(Ni) 0.65924) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-96Su.tdb | 1358.03 | LIQUID (x(Ni) 0.65917) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-96Su.tdb | 1358.03 | LIQUID (x(Ni) 0.65926) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |
| GdNi-96Su.tdb | 1265.3 | LIQUID (x(Ni) 0.63438) + GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) |
| GdNi-96Su.tdb | 1265.3 | LIQUID (x(Ni) 0.6343) + GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) |
| GdNi-96Su.tdb | 1265.3 | LIQUID (x(Ni) 0.63429) + GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) |
| GdNi-96Su.tdb | 1144.18 | GDNI_B33 (x(Ni) 0.5) + LIQUID (x(Ni) 0.59085) + GDNI2_C15 (x(Ni) 0.66667) |
| GdNi-96Su.tdb | 1144.18 | GDNI_B33 (x(Ni) 0.5) + LIQUID (x(Ni) 0.59081) + GDNI2_C15 (x(Ni) 0.66667) |
| GdNi-96Su.tdb | 975.43 | HCP_A3 (x(Ni) 5.900e-4) + GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.28821) |
| GdNi-96Su.tdb | 975.43 | HCP_A3 (x(Ni) 5.900e-4) + GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.28823) |
| GdNi-96Su.tdb | 933.64 | LIQUID (x(Ni) 0.37271) + GD3NI2 (x(Ni) 0.4) + GDNI_B33 (x(Ni) 0.5) |
| GdNi-96Su.tdb | 933.64 | LIQUID (x(Ni) 0.37295) + GD3NI2 (x(Ni) 0.4) + GDNI_B33 (x(Ni) 0.5) |
| GdNi-96Su.tdb | 875.72 | GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.33956) + GD3NI2 (x(Ni) 0.4) |
| GdNi-96Su.tdb | 875.72 | GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.33947) + GD3NI2 (x(Ni) 0.4) |
| GdNi-96Su.tdb | 875.72 | GD3NI_D011 (x(Ni) 0.25) + LIQUID (x(Ni) 0.33962) + GD3NI2 (x(Ni) 0.4) |
| GdNi-96Su.tdb | 303.74 | GDNI2_C15 (x(Ni) 0.66667) + GDNI3 (x(Ni) 0.75) + GD2NI7 (x(Ni) 0.77778) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/GD/GD-NI.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/GD/GD-NI.json) · [CALPHAD hull GdNi-96Su-oldGd](https://data.orchid-project.org/hulls/calphad-sgte/GD/GD-NI--GdNi-96Su-oldGd.json) · [CALPHAD hull GdNi-96Su](https://data.orchid-project.org/hulls/calphad-sgte/GD/GD-NI--GdNi-96Su.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Gd–Ni system (38)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 1589 | peritectic: Liquid + GdNi5 ↔ Gd2Ni17 | Liquid: Ni 0.91; GdNi5: Ni 0.833333; Gd2Ni17: Ni 0.894737 | model | [1] Rahou 2015 | Table 4, p. 4, row 38; `ORC-PPOVJRGXIA` |  |
| 1589 | peritectic: Liquid + GdNi5 ↔ Gd2Ni17 | Liquid: Ni 0.9; GdNi5: Ni 0.833333; Gd2Ni17: Ni 0.894737 | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 39; `ORC-WBXNWLXJVH` |  |
| 1573 | peritectic: Liquid + GdNi5 ↔ Gd2Ni17 | GdNi5: Ni 0.833333; Gd2Ni17: Ni 0.894737 | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 40; `ORC-6VOGZWJAIY` |  |
| 1571 | eutectic: Liquid ↔ Gd2Ni17 + Ni | Liquid: Ni 0.93; Gd2Ni17: Ni 0.894737 | model | [1] Rahou 2015 | Table 4, p. 4, row 43; `ORC-3UUCN4WZBI` |  |
| 1571 | eutectic: Liquid ↔ Gd2Ni17 + Ni | Liquid: Ni 0.94; Gd2Ni17: Ni 0.894737 | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 44; `ORC-CXJ2RV57SS` |  |
| 1563 | eutectic: Liquid ↔ Gd2Ni17 + Ni | Gd2Ni17: Ni 0.894737 | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 45; `ORC-PXIRXSGJVT` |  |
| 1558 | peritectic: Liquid + GdNi5 ↔ Gd2Ni17 | Liquid: Ni 0.94; GdNi5: Ni 0.833333; Gd2Ni17: Ni 0.894737 | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 41; `ORC-UDGCBD6TE3` |  |
| 1557 | peritectic: Liquid + GdNi5 ↔ Gd2Ni7 | Liquid: Ni 0.71; GdNi5: Ni 0.833333; Gd2Ni7: Ni 0.777778 | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 30; `ORC-UA6235BN6W` |  |
| 1556 | peritectic: Liquid + GdNi5 ↔ Gd2Ni7 | Liquid: Ni 0.73; GdNi5: Ni 0.833333; Gd2Ni7: Ni 0.777778 | model | [1] Rahou 2015 | Table 4, p. 4, row 29; `ORC-2WPLMVZRJE` |  |
| 1553 | peritectic: Liquid + GdNi5 ↔ Gd2Ni17 | Liquid: Ni 0.95; GdNi5: Ni 0.833333; Gd2Ni17: Ni 0.894737 | experimental | [1] Rahou 2015; _cites Xia 1997_ | Table 4, p. 4, row 42; `ORC-O5UPM2SOLK` |  |
| 1548 | eutectic: Liquid ↔ Gd2Ni17 + Ni | Liquid: Ni 0.95; Gd2Ni17: Ni 0.894737 | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 46; `ORC-PPKOHK4ZTJ` |  |
| 1535.15 | Liquid + bcc (Gd) -> hcp (Gd) |  | model | [2] Huang 2007 | Table 2, p. 6, row 1; `ORC-CZVERIWFLH` |  |
| 1521 | eutectic: Liquid ↔ Gd2Ni17 + Ni | Liquid: Ni 0.96; Gd2Ni17: Ni 0.894737 | experimental | [1] Rahou 2015; _cites Xia 1997_ | Table 4, p. 4, row 47; `ORC-Z2LVDHOKFQ` |  |
| 1481 | peritectic: Liquid + Gd2Ni7 ↔ GdNi3 | Liquid: Ni 0.69; Gd2Ni7: Ni 0.777778; GdNi3: Ni 0.75 | model | [1] Rahou 2015 | Table 4, p. 4, row 24; `ORC-J33NANFV6R` |  |
| 1480 | peritectic: Liquid + Gd2Ni7 ↔ GdNi3 | Liquid: Ni 0.66; Gd2Ni7: Ni 0.777778; GdNi3: Ni 0.75 | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 25; `ORC-WA5EPYBK7M` |  |
| 1474 | peritectic: Liquid + GdNi5 ↔ Gd2Ni7 | Liquid: Ni 0.64; GdNi5: Ni 0.833333; Gd2Ni7: Ni 0.777778 | experimental | [1] Rahou 2015; _cites Xia 1997_ | Table 4, p. 4, row 33; `ORC-QQILZGBO45` |  |
| 1473 | peritectic: Liquid + GdNi5 ↔ Gd2Ni7 | GdNi5: Ni 0.833333; Gd2Ni7: Ni 0.777778 | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 31; `ORC-CQGZU2XX2H` |  |
| 1473 | peritectic: Liquid + GdNi5 ↔ Gd2Ni7 | Liquid: Ni 0.65; GdNi5: Ni 0.833333; Gd2Ni7: Ni 0.777778 | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 32; `ORC-WP64ORLNKA` |  |
| 1383 | peritectic: Liquid + Gd2Ni7 ↔ GdNi3 | Liquid: Ni 0.61; Gd2Ni7: Ni 0.777778; GdNi3: Ni 0.75 | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 27; `ORC-PMY5GS5FKS` |  |
| 1383 | peritectic: Liquid + Gd2Ni7 ↔ GdNi3 | Gd2Ni7: Ni 0.777778; GdNi3: Ni 0.75 | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 26; `ORC-QYGJIGPJLU` |  |
| 1372 | peritectic: Liquid + Gd2Ni7 ↔ GdNi3 | Liquid: Ni 0.6; Gd2Ni7: Ni 0.777778; GdNi3: Ni 0.75 | experimental | [1] Rahou 2015; _cites Xia 1997_ | Table 4, p. 4, row 28; `ORC-PYLH7A3IXP` |  |
| 1358 | peritectic: Liquid + GdNi3 ↔ GdNi2 | Liquid: Ni 0.61; GdNi3: Ni 0.75; GdNi2: Ni 0.666667 | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 20; `ORC-7PBSW7VV7O` |  |
| 1358 | peritectic: Liquid + GdNi3 ↔ GdNi2 | Liquid: Ni 0.64; GdNi3: Ni 0.75; GdNi2: Ni 0.666667 | model | [1] Rahou 2015 | Table 4, p. 4, row 19; `ORC-UN27NA7CIH` |  |
| 1283 | peritectic: Liquid + GdNi3 ↔ GdNi2 | Liquid: Ni 0.58; GdNi3: Ni 0.75; GdNi2: Ni 0.666667 | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 22; `ORC-EISLPD5SM7` |  |
| 1280 | peritectic: Liquid + GdNi3 ↔ GdNi2 | Liquid: Ni 0.57; GdNi3: Ni 0.75; GdNi2: Ni 0.666667 | experimental | [1] Rahou 2015; _cites Xia 1997_ | Table 4, p. 4, row 23; `ORC-H4JAE6QHML` |  |
| 1268 | peritectic: Liquid + GdNi3 ↔ GdNi2 | GdNi3: Ni 0.75; GdNi2: Ni 0.666667 | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 21; `ORC-3V7TWLHSIG` |  |
| 1232 | eutectic: Liquid ↔ GdNi + GdNi2 | Liquid: Ni 0.57; GdNi: Ni 0.5; GdNi2: Ni 0.666667 | experimental | [1] Rahou 2015; _cites Xia 1997_ | Table 4, p. 4, row 18; `ORC-S64NK2553A` |  |
| 1172 | eutectic: Liquid ↔ GdNi + GdNi2 | Liquid: Ni 0.56; GdNi: Ni 0.5; GdNi2: Ni 0.666667 | model | [1] Rahou 2015 | Table 4, p. 4, row 14; `ORC-GLPPOUNMHS` |  |
| 1172 | eutectic: Liquid ↔ GdNi + GdNi2 | Liquid: Ni 0.56; GdNi: Ni 0.5; GdNi2: Ni 0.666667 | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 15; `ORC-I2WARKCN7U` |  |
| 1158 | eutectic: Liquid ↔ GdNi + GdNi2 | GdNi: Ni 0.5; GdNi2: Ni 0.666667 | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 16; `ORC-R3W5VSUHZV` |  |
| 1153 | eutectic: Liquid ↔ GdNi + GdNi2 | Liquid: Ni 0.56; GdNi: Ni 0.5; GdNi2: Ni 0.666667 | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 17; `ORC-T5SICUQ4SO` |  |
| 1039 | peritectic: Liquid + α-Gd ↔ Gd3Ni_HT | Liquid: Ni 0.3; Gd3Ni_HT: Ni 0.25 | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 2; `ORC-D7TS6ZDU55` |  |
| 1039 | peritectic: Liquid + α-Gd ↔ Gd3Ni_HT | Liquid: Ni 0.32; Gd3Ni_HT: Ni 0.25 | model | [1] Rahou 2015 | Table 4, p. 4, row 1; `ORC-DIBYQWTHOW` |  |
| 1008 | peritectic: Liquid + α-Gd ↔ Gd3Ni_HT | Gd3Ni_HT: Ni 0.25 | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 4; `ORC-2VVSGX3S65` |  |
| 1006 | peritectic: Liquid + α-Gd ↔ Gd3Ni_HT | Liquid: Ni 0.28; Gd3Ni_HT: Ni 0.25 | experimental | [1] Rahou 2015; _cites Xia 1997_ | Table 4, p. 4, row 5; `ORC-TV7AQSS2KU` |  |
| 986 | peritectic: Liquid + α-Gd ↔ Gd3Ni_HT | Gd3Ni_HT: Ni 0.25 | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 3; `ORC-WXYGC3VF4Q` |  |
| 977 | eutectic: Liquid ↔ Gd3Ni_HT + GdNi | Liquid: Ni 0.36; Gd3Ni_HT: Ni 0.25; GdNi: Ni 0.5 | model | [1] Rahou 2015 | Table 4, p. 4, row 8; `ORC-SX6WB2N5G7` |  |
| 977 | eutectic: Liquid ↔ Gd3Ni_HT + GdNi | Liquid: Ni 0.33; Gd3Ni_HT: Ni 0.25; GdNi: Ni 0.5 | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 9; `ORC-YROE6QYJCV` |  |

## Other properties

### Phase transition (14)

Table: Phase transition, Gd–Ni system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 31 K | 31 | magnetic: GdNi5; _alloy: Ni 0.833333_ | unspecified | [1] Rahou 2015; _cites Kaplan 1989_ [doi](https://doi.org/10.1103/physrevlett.62.2732) | Table 1, p. 2, row 1; `ORC-5KVOAAOANW` |  |
| Phase transition | 69 K | 69 | magnetic: GdNi; _alloy: Ni 0.5_ | unspecified | [1] Rahou 2015; _cites Kumar 2008_ | Table 1, p. 2, row 2; `ORC-IDOU2VEWP7` |  |
| Phase transition | 80 K | 80 | magnetic: GdNi2; _alloy: Ni 0.666667_ | unspecified | [1] Rahou 2015; _cites Gratz 2015_ | Table 1, p. 2, row 3; `ORC-IRFWSN4MLN` |  |
| Phase transition | 114 K | 114 | magnetic: GdNi3; _alloy: Ni 0.75_ | experimental | [1] Rahou 2015; _cites Kwiecien 2006_ [doi](https://doi.org/10.1016/j.jallcom.2005.12.032) | Table 1, p. 2, row 4; `ORC-H2LHPTD73J` |  |
| Phase transition | 911 K | 911 | polymorphic: Gd3Ni_LT ↔ Gd3Ni_HT; _Gd3Ni_LT: Ni 0.25; Gd3Ni_HT: Ni 0.25_ | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 7; `ORC-QSKBCFMSQP` |  |
| Phase transition | 911 K | 911 | polymorphic: Gd3Ni_LT ↔ Gd3Ni_HT; _Gd3Ni_LT: Ni 0.25; Gd3Ni_HT: Ni 0.25_ | model | [1] Rahou 2015 | Table 4, p. 4, row 6; `ORC-Y544GNMOOE` |  |
| Phase transition | 1238 K | 1238 | congruent melting: Liquid ↔ GdNi; _Liquid: Ni 0.5; GdNi: Ni 0.5_ | experimental | [1] Rahou 2015; _cites Xu 2012_ [doi](https://doi.org/10.3139/146.110756) | Table 4, p. 4, row 11; `ORC-KKDULNCJRT` |  |
| Phase transition | 1238 K | 1238 | congruent melting: Liquid ↔ GdNi; _Liquid: Ni 0.5; GdNi: Ni 0.5_ | model | [1] Rahou 2015 | Table 4, p. 4, row 10; `ORC-VHNLWXVYMV` |  |
| Phase transition | 1253 K | 1253 | congruent melting: Liquid ↔ GdNi; _Liquid: Ni 0.5; GdNi: Ni 0.5_ | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 12; `ORC-TFEBG2RBGU` |  |
| Phase transition | 1553 K | 1553 | congruent melting: Liquid ↔ GdNi; _Liquid: Ni 0.5; GdNi: Ni 0.5_ | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 13; `ORC-TCOSXTBODH` |  |
| Phase transition | 1705 K | 1705 | congruent melting: Liquid ↔ GdNi5; _Liquid: Ni 0.833333; GdNi5: Ni 0.833333_ | model | [1] Rahou 2015 | Table 4, p. 4, row 34; `ORC-467XDRUVIW` |  |
| Phase transition | 1706 K | 1706 | congruent melting: Liquid ↔ GdNi5; _Liquid: Ni 0.833333; GdNi5: Ni 0.833333_ | experimental | [1] Rahou 2015; _cites Dischinger 1998_ [doi](https://doi.org/10.1002/bbpc.19981020918) | Table 4, p. 4, row 35; `ORC-ZTXGIOZXKU` |  |
| Phase transition | 1753 K | 1753 | congruent melting: Liquid ↔ GdNi5; _Liquid: Ni 0.833333; GdNi5: Ni 0.833333_ | experimental | [1] Rahou 2015; _cites Pan 1986_ | Table 4, p. 4, row 36; `ORC-ZXI3K6RBOQ` |  |
| Phase transition | 1760 K | 1760 | congruent melting: Liquid ↔ GdNi5; _Liquid: Ni 0.833333; GdNi5: Ni 0.833333_ | experimental | [1] Rahou 2015; _cites Xia 1997_ | Table 4, p. 4, row 37; `ORC-55MEQB2MLM` |  |

## Sources

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

1. Z. Rahou, K. Mahdouk, Thermodynamic reassessment of Gd–Ni system, Journal of Alloys and Compounds 648, 346-352 (2015). [doi:10.1016/j.jallcom.2015.06.201](https://doi.org/10.1016/j.jallcom.2015.06.201)
2. Mianliang Huang, Deborah L. Schlagel, Frederick A. Schmidt, Thomas A. Lograsso, Experimental investigation and thermodynamic modeling of the Gd–Si system, Journal of Alloys and Compounds 441, 94-100 (2007). [doi:10.1016/j.jallcom.2006.09.068](https://doi.org/10.1016/j.jallcom.2006.09.068)

## 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/).