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首页> 外文期刊>Phase Transitions >Dielectric, ac conductivity and modulus studies of sol-gel BaZrO(2.9)compound
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Dielectric, ac conductivity and modulus studies of sol-gel BaZrO(2.9)compound

机译：溶胶 - 凝胶（2.9）化合物的介质，交流电导率和模量研究

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摘要

BaZrO(2.9)compound was prepared by the sol-gel process. Electrical and dielectric characterizations of the materials were performed using complex impedance spectroscopy technique over a frequency range of 100 Hz to 1 MHz and in a temperature range from 305 K to 370 K. ac conductivity and dielectric properties have been studied in order to explore the relaxation mechanisms in this compound. It can be seen from the experimental data that the ac conductivity is proportional to omega(n)(n < 1) and the value ofnis temperature-dependent and has a tendency to increase with temperature. The overlapping-short-polaron tunneling (NSPT) model can explain the temperature dependence of the frequency exponent. Finally, the relaxation properties of the investigated compound are presented in the electric modulus formalism; the equivalent circuit and modulus spectrum indicate the non-Debye type of frequency dispersion in this material.
机译：采用溶胶-凝胶法制备了BaZrO（2.9）化合物。在100 Hz至1 MHz的频率范围内，在305 K至370 K的温度范围内，使用复阻抗谱技术对材料进行了电气和介电特性表征。为了探索该化合物的弛豫机制，研究了交流电导率和介电特性。从实验数据可以看出，交流电导率与ω（n）（n<1）成正比，且n的值与温度有关，并且有随温度升高而增加的趋势。重叠短极化子隧穿（NSPT）模型可以解释频率指数的温度依赖性。最后，用电模量形式给出了所研究化合物的弛豫性质；等效电路和模量谱表明了这种材料中的非德拜型频散。

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