期刊
MATERIALS RESEARCH BULLETIN
卷 124, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2019.110745
关键词
Non-Debye; Impedance; Ferroelectric; Modulus; Correlated barrier hopping
A new bismuth based layered structure compound, Bi2YZrVO9, synthesized by the mixed oxide reaction method, is found to crystallize in the orthorhombic crystal system. The characteristic Nyquist plots suggest the contribution of only grains to the electrical properties up to 400 degrees C and both grains and grain boundaries at higher temperatures. Based on impedance spectroscopy data and complex permittivity plot, the Cole-Cole model was used to analyze the contributions of grains and grain boundaries to the resistive and capacitive properties of the material. Analysis of electrical conductivity, using Jonscher's power law, suggests the correlated barrier hopping being the dominant conduction mechanism in the compound. The activation energy for the conduction process in the range of 0.97 eV-0.75 eV corresponding to the frequency range 1 kHz-1 MHz suggest the role of oxygen vacancies in the conduction process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据