Electric field dependent phase stability and structurally bridging orthorhombic phase in Na_(0.5)Bi_(0.5)TiO _(3-x)BaTiO_3 crystals near the MPB

Ge W.; Yao J.; Devreugd C.Li J.Viehland D.Zhang Q.Luo H.

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Electric field dependent phase stability and structurally bridging orthorhombic phase in Na_(0.5)Bi_(0.5)TiO _(3-x)BaTiO_3 crystals near the MPB

机译：Electric field dependent phase stability and structurally bridging orthorhombic phase in Na_(0.5)Bi_(0.5)TiO _(3-x)BaTiO_3 crystals near the MPB

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摘要

The dielectric, domain and structural properties of Na_(0.5)Bi _(0.5)TiO_3-5.2BaTiO_3 (NBT-5.2BT) single crystals were studied as a function of temperature in unpoled and 〈001〉-poled conditions. A rhombohedral phase was found to coexist with a small volume fraction of a tetragonal one in the unpoled condition. However, in the poled condition, a single c-domain tetragonal state was found to be stable at room temperature with a piezoelectric d33 constant of 400 pC/N. On heating above 105 °C, this single c-domain tetragonal state first transformed into an intermediate orthorhombic structure at 130 °C, and then subsequently into a rhombohedral one above 140 °C.

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来源
《Solid State Communications》 |2010年第1期|71-74|共4页
作者
Ge W.; Yao J.; Devreugd C.Li J.Viehland D.Zhang Q.Luo H.;
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作者单位

Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA 24061, United States;

Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;

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正文语种英语
中图分类固体物理学;
关键词
A. Ferroelectrics; B. Crystal growth; C. X-ray scattering; D. Dielectric response;

Electric field dependent phase stability and structurally bridging orthorhombic phase in Na_(0.5)Bi_(0.5)TiO _(3-x)BaTiO_3 crystals near the MPB

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