High-pressure phases of thorium and uranium compounds with the rocksalt structure
- 1 April 1990
- journal article
- Published by Taylor & Francis in High Pressure Research
- Vol. 2 (5-6) , 335-338
- https://doi.org/10.1080/08957959008203185
Abstract
The high-pressure crystal structures of the actinide compounds ThX and UX (X= C, N, P, S, As, Se, Sb, Te) have been studied by X-ray diffraction using synchrotron radiation, in the pressure range up to about 60 GPa Distorted fcc structures were observed for UC (27 GPa), UN (29 GPa), UP (10/28 GPa), US (10 GPa) and ThS (20 GPa). No phase transition has been observed for ThC and ThN. Compounds with As, Se, Sb all transform to the CsCl structure. ThP transform to the CsCl structure at 30 GPa. ThTe has the CsCl structure at ambient pressure and no further phase transition has been observed. UTe transforms to the CsCl structure at 9 GPa.Keywords
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