钡铁氧体的太赫兹时域光谱  

Terahertz Time-Domain Spectroscopy of Barium Ferrites

作　　者：岳中岳[1] 金钻明[1] 李高芳[1] 马国宏[1] 

机构地区：[1]上海大学理学院,200444

出　　处：《上海大学学报（自然科学版）》2014年第6期778-783,共6页Journal of Shanghai University:Natural Science Edition

基　　金：国家自然科学基金资助项目(11174195);高等学校博士点专项科研基金资助项目(20123108110003)

摘　　要：利用溶胶-凝胶自蔓延燃烧法制备了钡铁氧体和Al掺杂钡铁氧体样品,并利用太赫兹时域光谱(terahertz time-domain spectroscopy,THz-TDS)对样品进行了测试.结果表明,样品吸收谱在0～1.2 THz频段内随着频率的增大而增大,钡铁氧体的折射率随频率的增大而减小;Al掺杂的钡铁氧体样品的折射率随频率的增大而增大,且Al的掺杂导致钡铁氧体THz波段的折射率减小.Al-doped and barium ferrite powders were synthesized using the sol-gel autocombustion method.The optical property and spectroscopy of Al-doped and barium ferrite were studied based on terahertz time-domain spectroscopy （THz-TDS）.The power absorption and refractive index of the Al-doped and barium ferrite were measured.The result shows that Al-doped decreases the refractive indices of barium ferrites,while the refractive indices of barium ferrites samples decreases with increasing frequency,and Al-doped leads to decrease of the refractive indices.

关 键 词：太赫兹时域光谱技术 钡铁氧体 铝掺杂 

分 类 号：O437[机械工程—光学工程]