Pressure induced phase transition in MnTe2 |
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| Authors: | H Fjellvåg A Kjekshus T Chattopadhyay HD Hochheimer W Hönle HG Von Schnering |
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| Institution: | Department of Chemistry, University of Oslo, N-0315 Oslo 3, Norway;Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, d-7000 Stuittgart 80, Fed. Rep. Germany |
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| Abstract: | Energy dispersive high-pressure powder X-ray experiments have been performed for MnTe2 up to a pressure of 20 GPa. MnTe2 undergoes a discontinuous transformation from the cubic pyrite type structure to the orthorhombic marcasite type structure at 7.0±0.5 GPa upon increasing pressure. The transformation is accompanied by a large reduction in the specific volume (ΔV/V=0.18) which probably reflects different magnetic properties of the two modifications of MnTe2. |
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