Ferroelectric domain reversal in congruent LiTaO3 crystals at elevated temperatures

被引:21
作者
Battle, CC [1 ]
Kim, S
Gopalan, V
Barkocy, K
Gupta, MC
Jia, QX
Mitchell, TE
机构
[1] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
[3] Old Dominion Univ, Coll Engn & Technol, Appl Res Ctr, Newport News, VA 23606 USA
[4] Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA
关键词
D O I
10.1063/1.126368
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report a four-times decrease in the electric fields for 180 degrees domain reversal in congruent LiTaO3 crystals with an increase in temperature from 22 to 250 degrees C. This is accompanied by a substantial broadening of the field range over which domain reversal takes place, by an order of magnitude. The large internal fields of similar to 5.5 kV/mm at room temperature, as measured by the asymmetry in polarization hysteresis loop, disappears at higher temperatures. With increasing temperature, the domain switching changes from lateral growth dominated to nucleation dominated kinetics. (C) 2000 American Institute of Physics. [S0003-6951(00)01417-0].
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页码:2436 / 2438
页数:3
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