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首页> 外文期刊>RSC Advances >Conductivity and giant permittivity study of Zn0.5Ni0.5Fe2O4 spinel ferrite as a function of frequency and temperature
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Conductivity and giant permittivity study of Zn0.5Ni0.5Fe2O4 spinel ferrite as a function of frequency and temperature

机译：Zn0.5Ni0.5Fe2O4尖晶石铁氧体的电导率和巨型介电常数研究作为频率和温度的函数

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摘要

Ni _(0.5) Zn _(0.5) Fe _(2) O _(4) was prepared by the solid state reaction route at different temperatures. The dielectric properties of spinel ferrites were investigated in the frequency range 50 Hz–10 MHz and in the temperature range 300–420 K. Conductance is shown to increase with increasing frequency and temperature. Impedance analyses indicated that the relaxation phenomenon is strongly dependent on temperature and frequency. The impedance plots displayed both intra- and inter-granular contributions. Electrical equivalent circuit was proposed to explain the impedance results. The decrease of giant permittivity values with the increase in frequency proves the dispersion in the low frequency range and is showing the Maxwell–Wagner interfacial polarization.
机译：Ni _（0.5）Zn _（0.5）Fe _（2）O _（4）由不同温度的固态反应途径制备。研究了尖晶石铁氧体的介电性质在频率范围50Hz-10MHz中，在300-420k的温度范围内。显示电导随着频率和温度的增加而增加。阻抗分析表明，松弛现象强烈依赖于温度和频率。阻抗图显示出颗粒间和粒度均有贡献。提出了电力等效电路来解释阻抗结果。随着频率的增加，巨大介电常数值的降低证明了低频范围内的分散，并显示了麦克斯韦尔瓦格界面极化。

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