Document Type

Article

Publication Date

8-10-2009

Journal or Book Title

Journal of Applied Physics

Volume

106

Issue

3

Last Page

034109

DOI

10.1063/1.3191666

Abstract

The temperature dependence of both polarization and electric-field induced strain was investigated for (1−x)Bi(Mg1/2Ti1/2)O3–xPbTiO3 (x=0.36, 0.37, and 0.38), with the morphotropic phase boundary located at x=0.37. Remanent polarization(Pr) and maximum polarization(Pmax) of all compositions are enhanced with increasing temperature up to 175 °C, which is rationalized as improved domain switching due to reduced tetragonality(c/a). The hysteresis during unipolar electric cycling tends to decrease with increase in the fraction of tetragonal phase. Temperature dependent x-ray diffraction demonstrates that switched non-180° domains are stable against thermal depoling above 200 °C, which indicates that the currently investigated materials are suitable for high temperature applications. This promising high-TCpiezoelectric is further discussed with reference to oxygen octahedron of the tilted R3c and untilted R3m space groups and the tolerance factor (t).

Comments

The following article appeared in Journal of Applied Physics 106 (2009): 034109 and may be found at http://dx.doi.org/10.1063/1.3191666.

Copyright Owner

American Institute of Physics

Language

en

File Format

application/pdf

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