# H–Nb–Zr system > H–Nb–Zr system: 14 accepted literature values (crystal structure 14) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/H-NB-ZR.html · Markdown: https://data.orchid-project.org/systems/H-NB-ZR.md 14 accepted literature values from 1 paper(s) (experimental 14); 0 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/H-NB-ZR.json) · [CSV](https://data.orchid-project.org/systems/H-NB-ZR.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#H-NB-ZR) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/H-NB-ZR.html) · [Markdown](https://data.orchid-project.org/systems/H-NB-ZR.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 14 | Table: Accepted values by property group | Property group | Values | |---|---:| | crystal structure | 14 | ## Other properties ### Crystal structure (14) Table: Crystal structure, H–Nb–Zr system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Lattice a | 3.4906 not_printed ± 3.000e-4 | 703.15 | ε-ZrH2; _alloy: H 0, Nb 0.18, Zr 0.82_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 7; `ORC-RCKNGEAUWO.7b97d5` | | | Lattice a | 3.2498 not_printed ± 5.000e-4 | 1023.15 | γ-ZrH; _alloy: H 0, Nb 0.01, Zr 0.99_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 14; `ORC-K5HV6QNIHX.436689` | | | Lattice a | 3.2547 not_printed ± 6.000e-4 | 1023.15 | γ-ZrH; _alloy: H 0, Nb 0.05, Zr 0.95_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 9; `ORC-MXNTSHFI55.cae937` | | | Lattice a | 4.7849 not_printed ± 0.0018 | 1023.15 | δ-ZrH2-x; _alloy: H 0, Nb 0.18, Zr 0.82_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 4; `ORC-F4NDSKD2H6` | | | Lattice a | 4.7805 not_printed ± 5.000e-4 | 1023.15 | δ-ZrH2-x; _alloy: H 0, Nb 0.01, Zr 0.99_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 13; `ORC-KTXKGELAN4` | | | Lattice a | 4.7808 not_printed ± 4.000e-4 | 1023.15 | δ-ZrH2-x; _alloy: H 0, Nb 0.05, Zr 0.95_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 8; `ORC-OVRZN62DOQ` | | | Lattice a | 4.7804 not_printed ± 7.000e-4 | 1023.15 | δ-ZrH2-x; _alloy: H 0, Nb 0.05, Zr 0.95_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 12; `ORC-XRQ2L5GD5F` | | | Lattice a | 3.4795 not_printed ± 0.0014 | 1023.15 | ε-ZrH2; _alloy: H 0, Nb 0.18, Zr 0.82_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 5; `ORC-VCMFHNWJAM.55ae82` | | | Lattice a | 3.5156 not_printed ± 5.000e-4 | 1123.15 | ε-ZrH2; _alloy: H 0, Nb 0.01, Zr 0.99_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 16; `ORC-VL3Z22ZRJB.ec3447` | | | Lattice c | 4.3471 not_printed ± 4.000e-4 | 703.15 | ε-ZrH2; _alloy: H 0, Nb 0.18, Zr 0.82_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 7; `ORC-RCKNGEAUWO.82f132` | | | Lattice c | 4.9711 not_printed ± 0.0012 | 1023.15 | γ-ZrH; _alloy: H 0, Nb 0.01, Zr 0.99_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 14; `ORC-K5HV6QNIHX.588501` | | | Lattice c | 4.9649 not_printed ± 0.0018 | 1023.15 | γ-ZrH; _alloy: H 0, Nb 0.05, Zr 0.95_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 9; `ORC-MXNTSHFI55.54c92b` | | | Lattice c | 4.528 not_printed ± 0.0026 | 1023.15 | ε-ZrH2; _alloy: H 0, Nb 0.18, Zr 0.82_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 5; `ORC-VCMFHNWJAM.e6c09f` | | | Lattice c | 4.4674 not_printed ± 8.000e-4 | 1123.15 | ε-ZrH2; _alloy: H 0, Nb 0.01, Zr 0.99_ | experimental | [1] Dottor 2023 | Table 2, p. 5, row 16; `ORC-VL3Z22ZRJB.ca3d1a` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Maxime Dottor, Jean-Claude Crivello, Jean-Marc Joubert, Critical reassessment of the H–Nb system and experimental investigation and thermodynamic modeling of the H–Nb–Zr system, Calphad 83, 102617 (2023). [doi:10.1016/j.calphad.2023.102617](https://doi.org/10.1016/j.calphad.2023.102617) ## 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 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_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=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).