Thickness dependence of magnetic anisotropy and domains in amorphous Co40Fe40B20 thin films grown on PET flexible substrates

被引：18
作者：
Tang, Zhenhua [1 ,2 ]
Ni, Hao [2 ,4 ]
Lu, Biao [1 ]
Zheng, Ming [2 ]
Huang, Yong-An [1 ]
Lu, Sheng-Guo [1 ]
Tang, Minghua [3 ]
Gao, Ju [2 ]
机构：
[1] Guangdong Univ Technol, Sch Mat & Energy, Guangdong Prov Key Lab Funct Soft Condensed Matte, Guangzhou 510006, Guangdong, Peoples R China
[2] Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China
[3] Xiangtan Univ, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Xiangtan 411105, Hunan, Peoples R China
[4] China Univ Petr, Coll Sci, Qingdao 266580, Shandong, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 426卷
基金：
中国国家自然科学基金;
关键词：
CoFeB thin film; Flexible substrate; Magnetic anisotropy; Magnetic domains; Thickness effect; PERPENDICULAR-ANISOTROPY; TUNNEL-JUNCTION; ELECTRIC-FIELDS; STRESS; TEMPERATURE; COFEB;
D O I：
10.1016/j.jmmm.2016.11.122
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The amorphous Co40Fe40B20 (CoFeB) films (5-200 nm in thickness) were grown on flexible polyethylene terephthalate (PET) substrates using the DC magnetron-sputtering method. The thickness dependence of structural and magnetic properties of flexible CoFeB thin films was investigated in detail. The in-plane uniaxial magnetic anisotropy induced by strain as a function of thickness was obtained in flexible CoFeB thin films, and a critical thickness of similar to 150 nm for in-plane magnetic anisotropy was observed. Moreover, the domains and the uniaxial anisotropy as a function of angular direction of applied magnetic field were characterized. The results show potential for designing CoFeB-based flexible spintronic devices in which the physical parameters could be tailored by controlling the thickness of the thin film.
引用
收藏
页码：444 / 449
页数：6
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