Tb掺杂LaMnO3材料的电输运与介电性能研究

摘要

采用固相反应法制备了A位掺杂的La0.95Tb0.05MnO3 (LTMO)钙钛矿材料.研究了LTMO的电输运性能、磁性能以及介电性能.结果表明,LTMO表现出半导体电输运特性,其磁序结构表现出类自旋玻璃行为,而其介电性能在100K附近表现出弛豫特性,当温度高于100K时LTMO介电常数ε'随温度的升高几乎不变化,表现出介电常数的高温稳定性.%Polycrystalline bulk perovskite La0. 95 Tb0. 05 MnO3 ( LTMO) were synthesized by conventional solid-state reaction. Electric transport property, magnetic and dielectric property were examined LTMO exhibits semiconductor, and its magnetic properties are spin-glass like behavior. It possesses the dielectric relaxation at lower 100K. Furthermore, the dielectric properties remain almost unchanged at higher 100K.