Abstract
The pressure-induced phase transition of the multiferroic manganese tungstate is studied on single crystals using synchrotron x-ray diffraction and Raman spectroscopy. We observe the monoclinic to triclinic phase transition at 20.1 GPa and get insight on the phase transition mechanism from the appearance of tilted triclinic domains. Selective Raman spectroscopy experiments with single crystals have shown that the onset of the phase transition occurs 5 GPa below the previously reported pressure obtained from experiments performed with powder samples.
- Received 3 November 2014
- Revised 12 March 2015
DOI:https://doi.org/10.1103/PhysRevB.91.104109
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