Depolarization in real time by photoacoustic.

被引：0

作者：

Ruíz, AJP ^{[1
]}

Castañeda-Guzmán, R ^{[1
]}

Muniz, MV ^{[1
]}

Reyes, M ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Ctr Instrumentos, Mexico City 04510, DF, Mexico

来源：

FERROELECTRICS | 2002年 / 273卷

关键词：

photoacoustic; depolarization;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the results of depolarization measurements in ferroelectric ceramics based on lead and barium titanate, with the photoacoustic method. This method is based on real time monitoring of the acoustic signal with PZT sensors after an excitation of the sample with laser pulses. We present the polarization condition, and the photoacoustic measurements before and after polarization. The photoacoustic signal analysis revealed clearly the beginning and final temperatures of the depolarization, and it is also possible to observe the Curie temperature of the ferro-paraelectric structural change. The presented analysis shows, furthermore, the thermal stability of these materials.

引用

页码：2711 / 2716

页数：6

共 7 条

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