论文部分内容阅读
通过对纳米γ Fe2 O3固体的介电常数和介电损耗进行测量 ,发现它具有与传统电介质明显不同的反常介电特性 .理论分析和拟合结果表明 ,纳米γ Fe2 O3固体中存在两种弛豫时间不同的极化机制 ,分别由界面中的缺陷和悬键引起 ;其介电损耗在真空中以电导损耗为主 ,在空气中以极化损耗为主 .
By measuring the dielectric constant and dielectric loss of nano-γFe2O3 solid, it is found that it has anomalous dielectric properties which are obviously different from the traditional ones. Theoretical analysis and fitting results show that there are two kinds of relaxation Polarization mechanism with different time of Yu is respectively caused by the defects and dangling bonds in the interface. The dielectric loss is dominated by the conduction loss in the vacuum and the polarization loss in the air.