Effect of High Pressure on the Relaxor Ferroelectrics Na 1/2 Bi 1/2 TiO 3 (NBT) and PbMg 1/3 Nb 2/3 O 3 (PMN)
The aim of the present paper is to review and briefly discuss recent experimental results on the effect of high pressure (p > 1.5 GPa) on relaxor ferroelectrics, exemplified by Na1/2Bi1/2TiO3 and PbMg1/3Nb2/3O3. The main result is that relaxor ferroelectrics present important polar and structural pressure-instabilities, which lead to both phase transitions of the average structure and considerable changes of the local structure. It is in particular the observation of a pressure-induced...[Show more]
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