尖晶石结构Li_(1.33)Mn_(1.67)O_4的磁学性质  

Magnetic Properties of Li_(1.33) Mn_(1.67) O_4 with Spinel Structure

作　　者：王丽萍[1] 高春歌[2] 陈红[3] 王春忠[2] 陶莹[4] 

机构地区：[1]白城师范学院物理系,吉林白城137000 [2]吉林大学物理学院,长春130012 [3]北华大学物理学院,吉林吉林132013 [4]吉林师范大学教育技术与传播学院,吉林四平136000

出　　处：《吉林大学学报（理学版）》2011年第3期537-539,共3页Journal of Jilin University:Science Edition

基　　金：吉林省科技发展计划项目(批准号:20100557)

摘　　要：采用固相烧结法制备尖晶石结构Li1.33Mn1.67O4样品.不同磁场下的直流磁化率曲线、磁滞回线和交流磁化率均表明该样品在低温呈团簇自旋玻璃态.通过计算材料的几何失措因子,可知掺杂非磁性Li离子破坏了失措的Kagome点阵,从而诱导铁磁与反铁磁相互作用的竞争,使体系呈自旋玻璃态.The sample of Li1.33Mn1.67O4 with spinel structure was prepared by means of solid state sintering technology.The ground state of Li1.33Mn1.67O4 shows cluster spin glass state identified by analyzing DC magnetization under different magnetic fields,magnetic hysteresis and AC susceptibility.The calculating results of geometrical frustration show that nonmagnetic Li＋-doping destroyed the frustrated kagome lattice,induced the competition between ferromagnetic and antiferromagnetic interaction,and made the system present spin glass state.

关 键 词：自旋玻璃态 几何失措 尖晶石结构 

分 类 号：O482[理学—固体物理]