Complex electrical transport behavior in low temperature sintered M-type hexaferrites
作者： Long Peng , Lezhong Li , Xiaoqiang Tu , Rui Wang , Yun Hu
DOI: 10.1016/J.JMMM.2015.10.068
关键词: Electrical resistivity and conductivity 、 Thermal 、 Thermal conduction 、 Analytical chemistry 、 Materials science 、 Condensed matter physics 、 Type (model theory) 、 Phase (matter) 、 Octahedron 、 Excitation 、 Electron
摘要: Abstract Temperature dependence of resistivity from room temperature to 750 °C at different frequency for the low sintered Sr 1− x La Fe 12− Co O 19 ( =0–0.3) ferrites was investigated, and a theory model based on hybrid grain structure established explain observed complex electrical transport behavior. It indicates that formation surface phase associated with non-uniform 3+ –Co 2+ substitution is crucial structure, which consists body phase, interface. The abnormal double metal-semiconductor (M–S) transitions in substituted are suggested arise competition lattice vibration scattering effect thermal excitation conduction electrons strongly correlated hopping between octahedral sites phase.
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