单相Bi_(0.9)Ba(0.1)Fe_(0.85)Mn_(0.15)O_3陶瓷中的多铁性  

Multiferroicity in single phase Bi_(0.9)Ba_(0.1)Fe_(0.85)Mn_(0.15)O_3 ceramic

作　　者：罗炳成[1] 周超超[1] 陈长乐[1] 金克新[1] 

机构地区：[1]西北工业大学凝聚态结构与性质陕西省重点实验室,西安710072

出　　处：《物理学报》2009年第7期4563-4566,共4页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:50331040;50702046)资助的课题~~

摘　　要：溶胶-凝胶法制备了Bi0.9Ba0.1Fe0.85Mn0.15O3陶瓷样品,XRD分析显示其为单相菱方钙钛矿结构,明显的磁滞回线和电滞回线说明其在室温具有弱铁磁性和铁电性,介电常数随外磁场的变化显示双掺样品具有更大的磁容效应.The Bi0.9Ba0.1Fe0.85Mn0.15O3 ceramic sample was prepared by sol-gel process. XRD analysis showed that it was the singlephase rhombohedral perovskite structure. A weak ferromagnetic and ferroelectric were obtain from the hysteresis loops. The dielectric constant which increased with an increase in the magnetic field showed that the Ba-Mn codoped BFO has greater magnetocapacitance effects.

关 键 词：溶胶-凝胶法 多铁材料 磁容效应 

分 类 号：TQ174.1[化学工程—陶瓷工业]