Abstract The structural and dielectric properties of CoCrFeO 4 nanoparticles synthesized via solution combustion technique have been studied. The phase purity of the product has been ascertained via powder XRD analysis. The morphology and size of the ferrite has been studied using TEM and the particles size matches well with that obtained from XRD. The dielectric studies done on the samples indicate that dielectric constant and dielectric loss tangent decrease with increase in frequency which can be attributed to space charge polarization. The dielectric loss vs. frequency curves recorded as a function of temperature show secondary maxima with a minimum in the negative side which shifts to the lower frequency side with increase in temperature. This helps in elucidating the conduction behaviour in these cobalt chromium ferrite particles.

中文翻译：

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溶液自燃合成CoCrFeO 4 纳米粉体的介电性能

摘要 研究了溶液燃烧技术合成的CoCrFeO 4 纳米颗粒的结构和介电性能。产物的相纯度已通过粉末 XRD 分析确定。已经使用 TEM 研究了铁氧体的形态和尺寸，并且颗粒尺寸与从 XRD 获得的颗粒尺寸匹配良好。对样品进行的介电研究表明，介电常数和介电损耗角正切随着频率的增加而降低，这可归因于空间电荷极化。记录为温度函数的介电损耗与频率曲线显示次要最大值，最小值在负侧，随温度升高移至低频侧。这有助于阐明这些钴铬铁氧体颗粒的导电行为。