Ni80Fe20 film with periodically modulated thickness as a reconfigurable one-dimensional magnonic crystal

被引：25
作者：
Kakazei, G. N. [1 ]
Liu, X. M. [1 ]
Ding, J. [1 ]
Adeyeye, A. O. [1 ]
机构：
[1] Natl Univ Singapore, Dept Elect & Comp Engn, Informat Storage Mat Lab, Singapore 117576, Singapore
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 04期
基金：
新加坡国家研究基金会;
关键词：
REVERSAL;
D O I：
10.1063/1.4863508
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Magnonic crystals with periodically modulated thickness were fabricated using deep ultraviolet lithography by covering Ni80Fe20 nanowire arrays with continuous Ni80Fe20 film. It is shown that the magnetization reversal and ferromagnetic resonance fields can be tuned either varying the film thickness (t) or the stripe width (w). For t >= 20 nm, two different stable magnetic configurations in zero external field were obtained. These configurations are characterized by noticeably different frequencies of ferromagnetic resonance up to 1 GHz and can be switched by applying magnetic pulses of proper amplitude and polarity. (C) 2014 AIP Publishing LLC.
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页数：4
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