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Updated: May 31, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
Published on: October 9, 2012
A single electric relaxation time in Ba(1-x)Sr(x)TiO(3) nanoparticles at low temperatures
Liyuan Zhang1, Jun Zhou, Zhonglin Wang
1School 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.
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