Sm元素对BiFeO_3介电性能的影响  

Effect of Sm doping on dielectric properties of polycrystalline BiFeO_3 ceramics

作　　者：宋桂林[1] 田亚芳[2] 王昕[1] 杜丽军[1] 浩洁[1] 王晶晶[1] 李涛[3] 

机构地区：[1]河南师范大学物理与信息工程学院,河南新乡453007 [2]郑州铁路职业技术学院,河南郑州450052 [3]郑州轻工业学院技术物理系,河南郑州450002

出　　处：《郑州轻工业学院学报（自然科学版）》2010年第4期8-11,共4页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：河南省教育厅自然科学研究计划项目(2006700014);大学生科技创新项目(81047604)

摘　　要：采用快速液相烧结法制备Bi1-xSmxFeO3(x=0,0.05,0.1)系列陶瓷样品,对样品的晶体结构、介电性能进行研究.结果表明:Bi1-xSmxFeO3陶瓷样品均为三方钙钛矿结构;室温下,掺杂适量的Sm3+可以改善BiFeO3样品的介电性能,且随着掺杂样品介电常数的显著提高,介电损耗明显减小.Multiferroic Bi1-xSmxFeO3（x=0,0.05,0.1）ceramics were prepared by rapid liquid phase sintering method.The crystal and dielectric properties were studied.The results showed that Bi1-xSmxFeO3 samples were three perovskite.At room temperature,mixing right amount of Sm3＋ can improve dielectic properties of BiFeO3.Dielectric constant is improved and dielectric loss is decreased.

关 键 词：铁磁电材料 BIFEO3 介电常数 介电损耗 

分 类 号：O469[理学—凝聚态物理]