A self-consistent calculation and an anisotropic wavelength cutoff energy of spin-wave spectrum in magnetic tunnel junctions

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	A self-consistent calculation and an anisotropic wavelength cutoff energy of spin-wave spectrum in magnetic tunnel junctions
	Han, XF
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2001
卷号	17 期号:2 页码:197
关键词	MAGNETORESISTANCE MEMORY
ISSN号	1005-0302
通讯作者	Han, XF: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China.
中文摘要	Temperature dependence of tunnel magnetoresistance (TMR) ratio, resistance, and coercivity from 4.2 K to room temperature (RT), applied de bias voltage dependence of the TMR ratio and resistances at 4.2 K and RT, tunnel current I and dynamic conductance dI/dV as functions of the de bias voltage at 4.2 K, and inelastic electron tunneling (IET) spectroscopy, d(2)I/dV(2) versus V, at 4.2 K for a tunnel junction of Ta(5 nm)/Ni79Fe21(25 nm)/Ir22Mn78(12 nm)/Co75Fe25(4 nm)/Al(0.8 nm)-oxide/Co75Fe25(4 nm)/Ni79Fe21(25 nm)/Ta(5 nm) were systematically investigated. High TMR ratio of 59.2% at 4.2 K and 41.3% at RT were observed for this junction after annealing at 275 degreesC for an hour. The temperature dependence of TMR ratio and resistances from 4.2 to 300 K at 1.0 mV bias and the de bias voltage dependence of TMR ratio at 4.2 K from 0 to 80 mV can be evaluated by a comparison of self-consistent calculations with the experimental data based on the magnon-assisted inelastic excitation model and theory. An anisotropic wavelength cutoff energy of spin-wave spectrum in magnetic tunnel junctions (MTJs) was suggested, which is necessary for self-consistent calculations, based on a series of IET spectra observed in the MTJs.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33207]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Han, XF. A self-consistent calculation and an anisotropic wavelength cutoff energy of spin-wave spectrum in magnetic tunnel junctions[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2001,17(2):197.
APA	Han, XF.(2001).A self-consistent calculation and an anisotropic wavelength cutoff energy of spin-wave spectrum in magnetic tunnel junctions.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,17(2),197.
MLA	Han, XF."A self-consistent calculation and an anisotropic wavelength cutoff energy of spin-wave spectrum in magnetic tunnel junctions".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 17.2(2001):197.