Abstract

This review is devoted to an analysis of the electrical resistance, the magnetoresistance, and the anomalous Hall effect in magnetic “ferromagnetic metal–insulator” nanocomposites at a metal content near the percolation threshold and the memristive properties of the capacitor structures based on these nanocomposites. A high content (up to 10²² cm^–3) of dispersed atoms in intergranular gaps leads to a logarithmic temperature dependence of the electrical resistance, a positive contribution to the magnetoresistance, the appearance of tunneling anomalous Hall effect, and a multifilament mechanism of resistive switching (which causes an adaptive character of memristor nanocomposites with dispersed atoms).

中文翻译：

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磁性纳米颗粒复合材料在绝缘基质中的输运性质

摘要

这篇综述专门分析了磁性“铁磁性金属-绝缘体”纳米复合材料中的金属含量接近渗流阈值时的电阻，磁阻和异常霍尔效应，以及基于这些纳米复合材料的电容器结构的忆阻特性。晶间间隙中高含量的分散原子（最多10 ²² cm ^–3）导致电阻的对数温度依赖性，对磁阻的正贡献，隧道异常霍尔效应的出现以及电阻的复丝机制开关（这会导致具有分散原子的忆阻器纳米复合材料的适应性）。