Electrical conductivity and thermoelectric power of nickel‐zinc ferrites
Electrical conductivity and thermoelectric power of nickel‐zinc ferrites
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DOI：
10.1002/crat.2170200819
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发表时间：
1985-08
影响因子：
1.5
通讯作者：
R. Satyanarayana;S. Murthy
中科院分区：
文献类型：
--
作者：
R. Satyanarayana;S. Murthy
研究了不同成分的多晶镍锌铁氧体的电导率和热电势随成分和温度的变化。在这些铁氧体的导电性解释的基础上的跳跃机制。log（σT）与103/T的曲线几乎呈线性，并显示在居里温度附近的转变。亚铁磁区的激活能一般小于顺磁区。讨论了载流子浓度和迁移率随组分和温度的变化关系。
Electrical conductivity (σ) and thermoelectric power (Q) of polycrystalline nickel-zinc ferrites of different compositions was investigated as a function of composition and temperature. The electrical conductivity in these ferrites is explained on the basis of the hopping mechanism. Plots of log (σT) versus 103/T are almost linear and show a transition near the curie temperature. The activation energy in the ferrimagnetic region is in general less than that in the paramagnetic region. The carrier concentration and mobility of charge carriers has been discussed as a function of composition and temperature.