Am–Np system

0 accepted literature values from 0 paper(s); 2 calculated phase diagram(s). 1 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

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
AmNp-10Kur.tdb	M. Kurata, IOP Conf. Ser.: Mater. Sci. Eng., 9, 012023(2010).	`2a5ba036840cfb6c59a6f5f5f8ea9dd828ed606d973bc361614d26fa5548f273`	viewer · TDB · JSON
AmNp-93Oga.tdb	T. Ogawa, J. Alloys Compd., 194, 1-7(1993). doi:10.1016/0925-8388(93)90636-2	`cfa44b10057e67b3e1a0e537dec78e40930acfe402fe4bdcbabdbb27ab076aeb`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AmNp-10Kur.tdb	1255.61	FCC_A1 (x(Np) 0.01242) + BCC_A2 (x(Np) 0.05844) + LIQUID (x(Np) 0.62324)
AmNp-10Kur.tdb	1041.98	FCC_A1 (x(Np) 0.00653) + DHCP (x(Np) 0.00653) + LIQUID (x(Np) 0.92403)
AmNp-10Kur.tdb	882.99	DHCP (x(Np) 0.00292) + LIQUID (x(Np) 0.97248) + BCC_A2 (x(Np) 0.98901)
AmNp-10Kur.tdb	844.56	DHCP (x(Np) 0.00223) + BCC_A2 (x(Np) 0.99179) + TETRAG_AD (x(Np) 0.99776)
AmNp-10Kur.tdb	555.03	DHCP (x(Np) 7.000e-5) + TETRAG_AD (x(Np) 0.99991) + ORTHO_AC (x(Np) 0.99991)
AmNp-93Oga.tdb	1215.18	FCC_A1 (x(Np) 0.13302) + BCC_A2 (x(Np) 0.21555) + LIQUID (x(Np) 0.88326)
AmNp-93Oga.tdb	941.32	FCC_A1 (x(Np) 0.08507) + BCC_A2 (x(Np) 0.96373) + LIQUID (x(Np) 0.97839)
AmNp-93Oga.tdb	823.05	FCC_A1 (x(Np) 0.05622) + BCC_A2 (x(Np) 0.98132) + TETRAG_AD (x(Np) 1)
AmNp-93Oga.tdb	823.05	FCC_A1 (x(Np) 0.05617) + BCC_A2 (x(Np) 0.98134) + TETRAG_AD (x(Np) 1)
AmNp-93Oga.tdb	787.47	DHCP (x(Np) 0) + FCC_A1 (x(Np) 0.04719) + TETRAG_AD (x(Np) 1)
AmNp-93Oga.tdb	787.47	DHCP (x(Np) 0) + FCC_A1 (x(Np) 0.0471) + TETRAG_AD (x(Np) 1)
AmNp-93Oga.tdb	555.03	DHCP (x(Np) 0) + ORTHO_AC (x(Np) 1) + TETRAG_AD (x(Np) 1)

Convex hulls: CALPHAD hull AmNp-93Oga

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}
}