Magnetoimpedance effect in FeCoB/Cu/FeCoB sandwiched films with Permalloy underlayer

作者：Zhong, Zhiyong^*; Zhang, Huaiwu; Jing, Yulan; Tang, Xiaoli; Zhang, Li; Liu, Shuang

来源：Vacuum, 2008, 82(5): 491-494.

DOI：10.1016/j.vacuum.2007.07.057

• magnetoimpedance (MI)
• magnetic thin films
• amorphous magnetic materials

We studied the magnetoimpedance (MI) effect of FeCoB(100nm)/Cu(100nm)/FeCoB(100nm) sandwiched films with different thickness of Permalloy as underlayer for the FeCoB ferromagnetic layer. The maximum MI ratio of sandwiched film is 9.2% when the thickness of the Permalloy underlayer is 2-3 run. The improvement of MI ratio of sandwiched films with Permalloy underlayer was explained by exchange induced ripple reduction mechanism.

• 出版日期2008-1-8
• 单位电子科技大学