BiFe0.5Cr0.5O3陶瓷的介电特性

IF 0.3 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY Lithuanian Journal of Physics Pub Date : 2022-12-10 DOI:10.3952/physics.v62i4.4815

E. Palaimiene, V. Gribauskaite, J. Banys, A. V. Pushkarev, Y. Radyush, N. M. Olekhnovich, J. Cardoso, A. Salak

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引用次数: 0

摘要

研究了高压合成的BiFe0.5Cr0.5O3陶瓷在200 ~ 500 K宽频率范围内(20 Hz ~ 1 GHz)的介电性能。结果表明，该陶瓷在300k以上具有良好的导电性。在300 K以下，观察到由铁电畴引起的介电色散。我们发现电导率遵循Almond-West定律，从而确定了直流贡献(σDC)。根据不同温度下得到的σDC值，根据Arrhenius定律计算出活化能(EA = 0.302±0.006 eV)。

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Dielectric characterization of the BiFe0.5Cr0.5O3 ceramics

Dielectric properties of the BiFe0.5Cr0.5O3 ceramics synthesized under high pressure were investigated in a broad frequency range (20 Hz – 1 GHz) between 200 and 500 K. It was revealed that the ceramics exhibit electrical conductivity above 300 K. Below 300 K, a dielectric dispersion caused by ferroelectric domains was observed. It was found that the conductivity follows the Almond–West law, which allowed us to determine a DC contribution (σDC). From the σDC values obtained at different temperatures, the activation energy (EA = 0.302 ± 0.006 eV) was calculated using the Arrhenius law.

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来源期刊

Lithuanian Journal of Physics 物理-物理：综合

CiteScore

0.90

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： The main aim of the Lithuanian Journal of Physics is to reflect the most recent advances in various fields of theoretical, experimental, and applied physics, including: mathematical and computational physics; subatomic physics; atoms and molecules; chemical physics; electrodynamics and wave processes; nonlinear and coherent optics; spectroscopy.