Giant strain in lead-free (Bi0.5Na0.5)TiO3-based single crystals

被引：132

作者：

Teranishi, Shunsuke ^{[1
]}

Suzuki, Muneyasu ^{[1
]}

Noguchi, Yuji ^{[1
]}

Miyayama, Masaru ^{[1
]}

Moriyoshi, Chikako ^{[2
]}

Kuroiwa, Yoshihiro ^{[2
]}

Tawa, Katsunori ^{[3
]}

Mori, Shigeo ^{[3
]}

机构：

[1] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan

[2] Hiroshima Univ, Grad Sch Sci, Dept Phys Sci, Hiroshima 7398526, Japan

[3] Osaka Prefecture Univ, Dept Mat Sci, Osaka 5998531, Japan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 18期

关键词：

D O I：

10.1063/1.2920767

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A giant electric-field-induced strain of 0.87% is reported for tetragonal (Bi0.5Na0.5)TiO3-(Bi0.5K0.5)TiO3-BaTiO3 single crystals along the [100](cubic), direction, which is six times as large as that of Pb(Zr0.52Ti0.48)O-3 Ceramics. In situ x-ray diffraction measurements and transmission electron microscope observations show that the giant strain mainly originates from switching of nanosized 90 degrees domains. Strain measurements indicate that the strain caused by the 90 degrees domain switching is reversible for both unipolar and bipolar electric-field applications. The reversibility of the 90 degrees domain switching can be explained by the interaction between the spontaneous polarization and the defect dipole composed of A-site vacancy and oxygen vacancy. (c) 2008 American Institute of Physics.

引用

页数：3

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