This work presents the results of studying the electrophysical properties of the YCu0.15Mn0.85O₃ solid solution in the range of temperatures of T = 26–400∘C and frequency range of f = 10²–10⁵ Hz. A model description of the revealed dispersion of dielectric parameters in the material is made. The nonclassical modified Havriliak–Negami model written for complex electrical conductivity was used as an approximation model. It is shown that the application of this model almost exactly describes the frequency behavior of the dielectric constant 𝜀′/𝜀0( f), the dielectric loss tangent tgδ( f) as well as the real and imaginary parts of complex conductivity γ′( f) and γ′′( f). The results of this work are an important step in identifying the opportunities and understanding the applications of this model.This work presents the results of studying the electrophysical properties of the YCu0.15Mn0.85O₃ solid solution in the range of temperatures of T = 26–400∘C and frequency range of f = 10²–10⁵ Hz. A model description of the revealed dispersion of dielectric parameters in the material is made. The nonclassical modified Havriliak–Negami model written for complex electrical conductivity was used as an approximation model. It is shown that the application of this model almost exactly describes the frequency behavior of the dielectric constant 𝜀′/𝜀0( f), the dielectric loss tangent tgδ( f) as well as the real and imaginary parts of complex conductivity γ′( f) and γ′′( f). The results of this work are an important step in identifying the opportunities and understanding the applications of this model.

利用溶胶凝胶工艺在SrTiO3单晶衬底上制备了一系列不同厚度的La0.7Ca0.3MnO3薄膜.X射线衍射表明这些薄膜均具有高度的择优取向性和结晶学质量.电学输运性质的研究结果凸显了膜厚的重要作用，主要归因于衬底施加的应力引起的薄膜晶格参数的改变.进一步的分析揭示，在厚度较小的膜中，小极化子的变程跃迁是高温下La0.7Ca0.3MnO3薄膜的主要导电机制，而在较厚的膜中，即使在低温下小极化子也是主要的载流子.

制备了两种基于锰酸盐氧化物异质结LaxCa1-xMnO3/Si（x=0.67和0.40）的激光探测器，并分别研究了在532 nm和1064 nm激光辐照下，两种异质结探测器的光生伏特效应。在532 nm激光辐照下，具有较好整流特性的异质结产生的光生伏特电压也较大。在激光打开和关闭时，都观测到了异质结光伏信号的瞬态响应峰值，且该峰值随斩波频率不断增大并在频率较大时趋于饱和。在1064 nm激光打开和关闭时，异质结光伏信号的瞬态响应具有明显的双峰现象，双峰的出现是光电效应与热电效应共同作用的结果。