标题： 退火温度对CoFeB薄膜交换刚度的影响 显示英文标题

标题： Effect of annealing temperature on exchange stiffness of CoFeB thin films

摘要： 我们使用布里渊光散射研究了28纳米厚的CoFeB薄膜的交换刚度常数。 一系列的CoFeB薄膜在MgO(001)基底上制备，有的带有额外的5纳米厚的MgO缓冲层，有的没有，研究了退火温度对交换刚度常数的影响。 我们发现，带有MgO缓冲层的400oC退火样品的交换刚度常数比200oC退火样品增加了10%（=0.73 +/- 0.01 x 10-11 J/m），而没有MgO缓冲层的样品的交换刚度常数比原始生长样品增加了6%（=1.11 +/- 0.02 x 10-11 J/m）。 显示英文摘要

摘要： We investigate the exchange stiffness constants of 28-nm-thick CoFeB film using Brillouin light scattering. Series of CoFeB films are prepared on the MgO(001) substrate with or without additional 5-nm thick MgO buffer layer, the effect of the annealing temperature on the exchange stiffness constants are studied. We found that the exchange stiffness constant of 400oC annealed sample with MgO buffer increased by 10 % form the 200oC annealed sample (=0.73 +/- 0.01 x 10-11 J/m), while the exchange stiffness constant of without MgO buffer layer sample increase by 6 % from the as-grown sample (=1.11 +/- 0.02 x 10-11 J/m).