Volume compressibilities of actinide materials
- 1 April 1990
- journal article
- Published by Taylor & Francis in High Pressure Research
- Vol. 2 (5-6) , 367-379
- https://doi.org/10.1080/08957959008203189
Abstract
Using an X-ray diffractometer of the Guinier type the bulk moduli B,0 of NpAs (NaCl structure) and of NpSn3 (cubic AuCu3 structure) were measured at room temperature. We find B0 = (75.3±5.0)GPa, B0' = (3.7 ± 1.0) for NpAs and B0 = (72.2 ± 11.6) GPa, B0' = (5.6 ± 4.1) for NpSn3. Compared to the results on NpA12 and NpOs2 the B0 value for NpSn3 is surprisingly small and supports the interpretation of high pressure Mössbauer data that this intermetallic behaves like a localized 5f electron system. In addition, we report on experimental modifications of the diffractometer which make compressibility measurements possible also at low (down to ∼ 10 K) temperatures.Keywords
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