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首页> 外文期刊>Physica, B. Condensed Matter >Dielectric properties of Ni substituted Li–Zn ferrites
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Dielectric properties of Ni substituted Li–Zn ferrites

机译：镍取代的锂锌铁氧体的介电性能

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摘要

Li_(0.40.5x)Zn_(0.2)Ni_x Fe_(2.40.5x)O_4 ferrites with x varying from 0.02 to 0.1 in steps of 0.02 have been synthesized by the citrate precursor method and investigated for their dielectric properties. A decrease in the value of room temperature dielectric constant is observed with the increase in Ni concentration. It has been explained in terms of space charge polarization and Koop’s two layer model. The variation in dielectric constant with frequency shows dispersion while a resonance peak could be seen in the variation of dielectric loss with frequency. With increase in temperature the dielectric constant and dielectric loss increased, which have been discussed in terms of polarization and the Debye-type of dispersion. Possible mechanism contributing to the above process is discussed.
机译：通过柠檬酸盐前驱体方法合成了x在0.02到0.1之间以0.02为步长变化的Li_（0.40.5x）Zn_（0.2）Ni_x Fe_（2.40.5x）O_4铁氧体，并研究了它们的介电性能。随着Ni浓度的增加，观察到室温介电常数的值降低。已经根据空间电荷极化和库普的两层模型进行了解释。介电常数随频率的变化表现为色散，而在介电损耗随频率的变化中可以看到共振峰。随着温度的升高，介电常数和介电损耗增加，这已经在极化和色散的德拜型方面进行了讨论。讨论了有助于上述过程的可能机制。

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