Article ID Journal Published Year Pages File Type
1506960 Solid State Sciences 2007 5 Pages PDF
Abstract

Relaxor and ferroelectric properties have been reported in a lot of compounds and solid solutions. There are usually several ways to tune the behaviour from relaxor to ferroelectric and vice versa: the chemical composition, the temperature and an applied electric field. We show here that the crystalline orientation is an additional tuning parameter. In the tetragonal tungsten bronze crystal Sr0.75Ba0.25Nb2O6, we have evidenced a ferroelectric transition in the [100] direction while a relaxor state is found along the [001] direction. Moreover, these two different behaviours occur in the same temperature range.

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Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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