Effects of cobalt-permalloy cosputtering in a nanowire structure on magnetic fluctuation and auto-oscillation

被引：0
|
作者：
Kim, ByungRo [1 ,2 ]
Hwang, S. [1 ]
Yoon, Seungha [2 ]
Han, S. H. [3 ]
Cho, B. K. [1 ]
机构：
[1] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea
[2] Korea Inst Ind Technol, Green Energy & Nano Technol R&D Grp, 6 Cheomdangwagi Ro 208 Gil, Gwagju 61012, South Korea
[3] Mokpo Natl Maritime Univ, Div Nav Sci, Mokpo 58628, South Korea
来源：
AIP ADVANCES | 2023年 / 13卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
SPIN; TRANSPARENCY;
D O I：
10.1063/9.0000437
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A magnetic nanostructure for auto-oscillation, induced by spin-transfer torque, is fabricated by cosputtering permalloy with cobalt. Although the system does not meet the critical size and current requirements for direct auto-oscillation, magnetic signals resulting from spin wave excitation and magnetic fluctuations are measured by a Brillouin light scattering (BLS) system. From the analysis of the BLS spectrum, the threshold current for auto-oscillation is estimated to be 27.3% lower in Py1-xCox (x = 0.2095) than in Py1-xCox (x = 0.0). It is surmised that the cobalt in permalloy improves the efficiency of transferring spin toque for auto-oscillation.
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页数：5
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