Observation of relaxation time for polarization clusters in BaTiO<sub>3</sub> near TC by photon correlation spectroscopy

YAN Rui GUO Zhi TAI Renzhong

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Observation of relaxation time for polarization clusters in BaTiO₃ near TC by photon correlation spectroscopy

更新时间：2021-03-12

- Observation of relaxation time for polarization clusters in BaTiO₃ near TC by photon correlation spectroscopy
- NUCLEAR TECHNIQUES Vol. 32, Issue 6, (2009)
- 作者机构：
  
  中国科学院上海应用物理研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： O614.233;O657.3
- Published：01 June 2009
- 稿件说明：
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[1]严睿,郭智,邰仁忠.光子相关谱法测量BaTiO_3中极化团簇的弛豫时间[J].核技术,2009,32(06):439-442.

YAN Rui GUO Zhi TAI Renzhong. Observation of relaxation time for polarization clusters in BaTiO₃ near TC by photon correlation spectroscopy[J]. Nuclear techniques, 2009, 32(6): 439-442.
[1]严睿,郭智,邰仁忠.光子相关谱法测量BaTiO_3中极化团簇的弛豫时间[J].核技术,2009,32(06):439-442. DOI：

YAN Rui GUO Zhi TAI Renzhong. Observation of relaxation time for polarization clusters in BaTiO₃ near TC by photon correlation spectroscopy[J]. Nuclear techniques, 2009, 32(6): 439-442. DOI：

摘要

建立了测量晶体内部时间结构的双偏振滤波式光子相关谱实验装置。并用此装置对铁电单晶BaTiO3中极化团簇的动力学行为实施了直接观测。结果表明

该方法可对BaTiO3中

空间周期为200 nm的极化团簇进行有效探测

其弛豫时间在微秒量级

并且随着温度的升高

弛豫时间逐渐减小

但在居里点处出现突变。

Abstract

A new depolarized photon correlation spectroscopy system was built.Long range correlation dynamics of polarization clusters in BaTiO3 have been observed directly near the Curie temperature(TC) by photon correlation spectroscopy.The clusters on the order of 200 nm were found to be dynamic near TC with a characteristic relaxation time of several microseconds.And this relaxation time decreased with an increase in temperature

but exhibited an anomaly at TC.

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Observation of relaxation time for polarization clusters in BaTiO3 near TC by photon correlation spectroscopy

DOI：

摘要

Abstract

关键词

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references

Observation of relaxation time for polarization clusters in BaTiO₃ near TC by photon correlation spectroscopy