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首页> 外文会议>International Conference on Recent Trends in Advanced Materials >Dielectric Behavior and A. C. Conductivity Studies on Nickel Nanoferrites Synthesized by Solution Combustion Method
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Dielectric Behavior and A. C. Conductivity Studies on Nickel Nanoferrites Synthesized by Solution Combustion Method

机译：溶液燃烧法合成镍纳米铁的介质行为和A. C.

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Nanoscale Nickel ferrite particles were prepared by combustion method using nickel nitrate as oxidizer and urea as a fuel. The structure of the sample is studied with X-ray diffraction (XRD) using Cu-Kα radiation. The X-ray diffraction analysis revealed the nanocrystalline nature in the prepared ferrite samples. Dielectric studies have been undertaken over a wide range of frequencies (100Hz-5MHz) for Nickel nanoferrites at room temperature. Dielectric properties such as dielectric loss tangent (D), dielectric constant (ε') and dielectric loss factor (ε") are found to decrease with the increase in the frequency. Observed variations are understood on the basis of Koop's phenomenological model. Further, a. c. conductivity of the Nickel nanoferrite was found to increase with the increase in the frequency. Observed variation in the a. c. conductivity with the frequency has been understood on the basis of electron hopping model.
机译：通过使用硝酸镍作为氧化剂和尿素作为燃料，通过燃烧方法制备纳米级镍铁氧体颗粒。使用Cu-Kα辐射使用X射线衍射（XRD）研究样品的结构。 X射线衍射分析显示制备的铁氧体样品中的纳米晶体性质。在室温下为镍纳米铁镍的多种频率（100Hz-5MHz）进行了介电研究。介电损耗切线（D），介电常数（ε'）和介电损耗因子（ε“）的介电性质被发现随着频率的增加而降低。在Koop的现象模型的基础上，观察到的变化。此外，发现镍纳米镍的AC电导率随着频率的增加而增加。在电子跳跃模型的基础上，已经理解了与频率的AC电导率的变化。

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