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.

引用

页数：5