Effect of annealing temperature on exchange stiffness of CoFeS thin films

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:395

Article

Cho, Jaehun¹  Jung, Jinyong¹  Cho, Shin-Yong¹  You, Chun-Yeol¹ 

[1] Inha Univ, Dept Phys, Inchon 402751, South Korea

关键词: Spin waves;    Brillouin light scattering;    Exchange stiffness constant;   

DOI  :  10.1016/j.jmmm.2015.06.073

来源: Elsevier

【 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 400 degrees C annealed sample with MgO buffer increased by 10% form the 200 degrees C 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). (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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