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Abstract

The high pressure behaviour of the monochalcogenides of samarium was investigated up to pressures of 55 GPa using the energy dispersive X-ray diffraction technique and synchrotron radiation. SmTe and SmSe show abnormal volume changes around 5 and 7 GPa respectively. SmS shows a phase transformation at low pressure (less than 1.8 GPa), retaining the same cubic structure, but undergoing a considerable volume collapse and a change of colour. SmS and SmSe both exhibit a phase transition from NaCl type to CsCl type structure at high pressure, which has not been observed previously.

Additional information

Authors: LE BIHAN T, JRC Karlsruhe (DE);DARRACQ S, JRC Karlsruhe (DE);HEATHMAN S, JRC Karlsruhe (DE);BENEDICT U, JRC Karlsruhe (DE);MATTENBERGER K, ETH Hönggerberg, Laboratorium fürFestkörperphysik, Zürich (CH);VOGT O, ETH Hönggerberg, Laboratorium fürFestkörperphysik, Zürich (CH)
Bibliographic Reference: Article: Journal of Alloys and Compounds, Vol. 226 (1995) pp. 143-145
Record Number: 199512105 / Last updated on: 1996-01-15
Category: PUBLICATION
Original language: en
Available languages: en