A phase transition in NiF2 at elevated pressures
- 1 November 1977
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 48 (11), 4573-4575
- https://doi.org/10.1063/1.323482
Abstract
A pressure‐induced phase transition occurs in NiF2 at room temperature from a tetragonal to an orthorhombic structure. To the limits of our x‐ray dispersion (CuKα radiation, 114.6‐mm camera), it may be second or first order and becomes resolvable at about 40 kbar. We suggest that it may be magnetic in origin but the Bloch 10/3 rule virtually precludes its identification with the low‐temperature weakly ferromagnetic orthorhombic form. Another possibility is that it is strain induced via a soft mode and not magnetic in origin.Keywords
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