Three-dimensional polarization imaging of (Ba,Sr)TiO3:MgO composites -: art. no. 042903

被引：30

作者：

Irvin, P ^{[1
]}

Levy, J

Guo, R

Bhalla, A

机构：

[1] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[2] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.1854722

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dielectric tuning and loss of (Ba,Sr)TiO3:MgO bulk composites depend strongly on the connectivity and interaction among the two phases. To investigate this relationship, the polar structure and dynamics of these composites are mapped as a function of space and time using a pair of three-dimensional probes: second-harmonic confocal scanning optical microscopy (SH-CSOM), which maps ferroelectric polarization in three dimensions, and time-resolved scanning optical microscopy (TR-CSOM), which maps polarization dynamics along two spatial dimensions and one time dimension. SH-CSOM measurements reveal a high degree of homogeneity within the (Ba,Sr)TiO3 regions, while TR-CSOM measurements indicate that topologically connected regions respond with a spatially uniform phase. (C) 2005 American Institute of Physics.

引用

页码：042903 / 1

页数：3

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