NDLI: Temperature Dependence of Thermally Activated Ferromagnetic Resonance in Tunneling Magnetoresistive Heads

Content Provider	IEEE Xplore Digital Library
Author	Han, G.C. Zong, B.Y. Li, K.B. Liu, B. Wu, Y.H. Mao, S.N.
Copyright Year	1965
Abstract	Temperature dependence of thermally activated ferromagnetic resonance (FMR) has been studied for two kinds of tunneling magnetoresistive (TMR) heads with a track width of about 100 nm. It is found that the power spectral density (PSD) is composed of a FMR peak and a resonance kink at slightly lower frequency. For the TMR head with a well-defined magnetization state (single domain) of the free layer, the kink is much smaller than the peak in amplitude, and the FMR peak increases in its amplitude and shifts to lower frequency as temperature increases. However, for the TMR head with a hysteretic magnetization behavior, the FMR peak is blurred by the kink and no discernible shift of its position can be detected as temperature increases. It is observed that the noise power can be redistributed among different resonance modes at different temperatures and fields
Sponsorship	IEEE Magnetics Society
Starting Page	819
Ending Page	821
Page Count	3
File Size	274144
File Format	PDF
ISSN	00189464
Volume Number	43
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature dependence Magnetic resonance Tunneling magnetoresistance Magnetic heads Temperature sensors Noise measurement Frequency Magnetic sensors Magnetization Magnetic noise tunneling magnetoresistive heads power spectral density
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Broad-band noise spectroscopy of giant magnetoresistive read heads

Spin-Torque Effect on Thermally Excited Magnetization Fluctuation Noise in Tunneling Magnetoresistive Read Heads

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Hard Bias Effect on Magnetic Noise in Different Types of Tunnel Magnetoresistive Heads

Is Electrical 1/f Noise in Tunneling Magnetoresistive Heads a Form of Equilibrium Noise?

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Pattern Dependence of TMR Sensor Noise

Angular Dependence of Magnetoresistance During Magnetization Reversal on Magnetic Tunnel Junction Ring

Temperature Dependence of Thermally Activated Ferromagnetic Resonance in Tunneling Magnetoresistive Heads

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