Neptunium arsenide explained
Neptunium arsenide is a binary inorganic compound of neptunium and arsenic with the chemical formula .[1] The compound forms crystals.
Synthesis
Heating stoichiometric amounts of pure substances:
| Np+As \xrightarrow{T,I2 NpAs |
}
Physical properties
Neptunium arsenide forms crystals of several modifications:[2] [3]
- Cubic system, space group Fm3m, cell parameters a = 0.5835 nm, exists at temperatures below –131 °С.
- Tetragonal system, cell parameters a = 0.58312 nm, c = 0.58281 nm, exists in the temperature range –131 to –98 °С.
- Cubic system, space group Fm3m, cell parameters a = 0.58318 nm, exists at temperatures above –98 °C.
Neptunium arsenide becomes antiferromagnetic at 175 K.[4] [5] [6]
Notes and References
- Book: Los Alamos Science . 2000 . . 172 . 8 August 2021 . en.
- Web site: mp-2186: NpAs (cubic, Fm-3m, 225) . . 8 August 2021.
- Arya . Balwant Singh . Patle . U. S. . Aynyas . Mahendra . High pressure structural and elastic properties of neptunium arsenide . AIP Conference Proceedings . 24 April 2019 . 2100 . 1 . 020148 . 10.1063/1.5098702 . 2019AIPC.2100b0148A . 149517034 . 8 August 2021 . 0094-243X.
- Book: Erdos . Paul . The Physics of Actinide Compounds . 6 December 2012 . . 978-1-4613-3581-8 . 40 . 8 August 2021 . en.
- Aldred . A. T. . Dunlap . B. D. . Harvey . A. R. . Lam . D. J. . Lander . G. H. . Mueller . M. H. . Magnetic properties of the neptunium monopnictides . . 1 May 1974 . 9 . 9 . 3766–3779 . 10.1103/PhysRevB.9.3766 . 1974PhRvB...9.3766A . 8 August 2021.
- Magnetization of neptunium monoarsenide . . 1 February 1983 . 31-34 . 233–234 . 10.1016/0304-8853(83)90229-9 . 8 August 2021 . en . 0304-8853. Blaise . A. . Fournier . J.M. . Damien . D. . Wojakowski . A. . 1983JMMM...31..233B.
