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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Dielectric properties of polycrystalline Cu-Zn ferrites at microwave frequencies
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Dielectric properties of polycrystalline Cu-Zn ferrites at microwave frequencies

机译：微波频率下多晶Cu-Zn铁氧体的介电性能

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摘要

The real dielectric constant e' and complex dielectric constant s" of Cu_(1-x)Zn_xFe_2O_4 have been measured at room temperature in the high frequency range 1 MHz to 1.8 GHz. At low frequencies the dielectric loss is found to be constant up to 1.4 GHz and there is a sudden rise at 1.5 GHz. A qualitative explanation is given for the composition, frequency dependence of the dielectric constant and dielectric loss of Cu_(1-x)Zn_x Fe_2O_4. These are correlated with the W-H plot which gives the information about change in the average crystal size and strain of the samples. The micro-morphological features of the samples were obtained by Scanning Electron Microscopy (SEM). The micrograph shows that the increase of the Zn content in Cu ferrite increases the grain size.
机译：Cu_（1-x）Zn_xFe_2O_4的实际介电常数e'和复数介电常数s“已在室温下在1 MHz至1.8 GHz的高频范围内进行了测量。在低频下，发现介电损耗直至1.4 GHz，而在1.5 GHz处突然上升，对Cu_（1-x）Zn_x Fe_2O_4的组成，介电常数的频率依赖性和介电损耗作了定性解释，它们与WH图相关，得出了样品的平均晶体尺寸和应变变化的信息，通过扫描电子显微镜（SEM）获得了样品的微观形貌特征，显微照片表明，铜铁素体中锌含量的增加使晶粒尺寸增大。

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