Y_(3-x)Bi_xFe_5O_(12)系列单晶的磁振子劲度系数,散射强度及线宽的布里渊散射研究  

Brillouin Scattering Study on Exchange Stiffness Parameter, Scattering Intensity and Linewidth of Magnon in Y 3-x Bi xFe 5O 12 Single Crystals

作　　者：萧季驹[1] 李泽民[1] 刘玉龙[2] 朱恪[2] 张昊[2] 

机构地区：[1]香港城市大学物理及材料科学系 [2]中科院物理研究所

出　　处：《光散射学报》1997年第2期52-54,共3页The Journal of Light Scattering

摘　　要：Ｙ３－ｘＢｉｘＦｅ５Ｏ１２系列单晶的磁振子劲度系数，散射强度及线宽的布里渊散射研究萧季驹李泽民（香港城市大学物理及材料科学系香港九龙）刘玉龙朱恪张昊（中科院物理研究所北京１０００８０）ＢｒｉｌｏｕｉｎＳｃａｔｅｒｉｎｇＳｔｕｄｙｏｎＥｘｃｈａｎｇｅＳ...Abstract The spin wave exchange stiffness parameter has been measured for a series of Bi substituted yttrium iron garnet (YIG) single crystals. Results were obtained for a range of bismuth substitutions, 0<y<0.92, based on the formula {Y 3-x Bi x}(Fe 3)O 12 . Increasing bismuth substitution results in a linear increase in the exchange stiffness from the value for pure YIG. The scattering intensity as well as the linewidth of magnon increased linearly with bismuth concentrations.

关 键 词：布里渊散射 单晶 散射强度 磁振子 劲度系数 

分 类 号：O437.2[机械工程—光学工程] O734.1[理学—光学]