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Tb掺杂LaMnO₃材料的电输运与介电性能研究

Electrical Transport and Dielectric Properties of Perovskite Tb Doped LaMnO₃

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【Author】 ZHANG Kaituo1,ZHENG Shu1,ZHANG Yingtang2(1 Electrical Engineering College,Henan Mechanical and Electrical Engineering College,Xinxiang 453000;2 Institute of Functional Material,School of Material Science and Engineering,Shaanxi University of Technology,Hanzhong 723003)

【机构】河南机电高等专科学校电气工程系；陕西理工学院材料学院功能材料研究所；

【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。更多还原

【Abstract】 Polycrystalline bulk perovskite La0.95Tb0.05MnO3(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.更多还原