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首页> 外文期刊>Physica, B. Condensed Matter >Electrical conductivity and dielectric properties of zinc substituted lithium ferrites prepared by sol-gel method
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Electrical conductivity and dielectric properties of zinc substituted lithium ferrites prepared by sol-gel method

机译：溶胶-凝胶法制备的锌取代锂铁氧体的电导率和介电性能

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摘要

Polycrystalline zinc substituted lithium ferrites, Li0.5-x/2ZnxFe2.5-x/2O4 (where x=0.0, 0.2, 0.4, 0.6, 0.8 and 1.0), were prepared by sol-gel method. The samples were characterized by X-ray diffraction (XRD), DC electrical conductivity and dielectric studies. X-ray diffraction patterns of all the samples showed the single phase structure. DC conductivity and dielectric properties were investigated as a function of temperature and frequency at room temperature, respectively. DC conductivity of the samples increases as the temperature increases indicating that the samples have semiconductor like behavior. It is also found that the DC resistivity and dielectric constant of the lithium-zinc ferrites changes considerably with zinc content and the sintering temperatures. The variations of DC resistivity (rho(dc)) and dielectric constant (epsilon(1)) with zinc content are found to be opposite to each other. The possible mechanism for the influence of zinc on the electrical transport properties of lithium ferrites is discussed in this paper.
机译：通过溶胶-凝胶法制备多晶的锌取代的锂铁氧体Li0.5-x / 2ZnxFe2.5-x / 2O4（其中x = 0.0、0.2、0.4、0.6、0.8和1.0）。通过X射线衍射（XRD），直流电导率和介电研究来表征样品。所有样品的X射线衍射图显示出单相结构。分别研究了直流电导率和介电性能与室温下温度和频率的关系。样品的直流电导率随温度升高而增加，表明样品具有类似半导体的行为。还发现，锂锌铁氧体的直流电阻率和介电常数随锌含量和烧结温度而显着变化。发现直流电阻率（rho（dc））和介电常数（epsilon（1））随锌含量的变化彼此相反。本文讨论了锌对铁氧体锂电输运性能的影响的可能机理。

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