Structural, Magnetic and Optical Properties of BiFe1-xNbxO3  

BiFe1-xNbxO3的结构、磁性和光学性质

作　　者：冼慧敏 杜奕全 张弜[1] 陈熹[1] 

机构地区：[1]华南理工大学物理系,广州510006

出　　处：《Chinese Journal of Chemical Physics》2016年第5期578-584,I0002,共8页化学物理学报（英文）

摘　　要：Nb doped multiferroic BiFe1-xNbxO3 （0 〈x 〈0.05） polycrystalline powders have been syn-thesized by using a sol-gel method. The effect of Nb dopant on the structural, magnetic and optical properties is investigated. According to the X-ray di raction data and the result of Rietveld re nement, all the samples maintain the R3c phase, while the lattice parameters a, c, the cell volume V and the Fe-O-Fe bond angle change. The remnant magnetization enhances by appropriate Nb doping due to the decreasing of the grain size. Meanwhile, Nb dopant leads to the narrowing of the band gap of BiFe1-xNbxO3 samples.

关 键 词：Bismuth ferrite Crystal structure Magnetic property Band gap 

分 类 号：O[理学]