A single electric relaxation time in Ba(1-x)Sr(x)TiO(3) nanoparticles at low temperatures |
| |
Authors: | Zhang Liyuan Zhou Jun Wang Zhonglin Davidović D |
| |
Affiliation: | School of Physics, Georgia Institute of Technology, Atlanta, GA 30332-0430, USA. |
| |
Abstract: | It is shown that the dielectric response of Ba(0.77)Sr(0.23)TiO(3) nanoparticles at temperatures below 200?K has a frequency and temperature dependence in agreement with the Debye theory with a single relaxation time, which exhibits the Arrhenius law. By contrast, at temperatures above 210?K the dielectric response exhibits a broad range of relaxation times characteristic of relaxor-ferroelectrics. We suggest that the single relaxation time at low temperature originates from a frustration effect, in analogy with frustrated antiferromagnetism. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|