Hard bias effect on magnetic noise in different types of tunnel magnetoresistive heads

G. C. Han; B. Y. Zong; P. Luo; L. Wang; Z. B. Guo; S. N. Mao

doi:10.1109/TMAG.2008.2001647

Hard bias effect on magnetic noise in different types of tunnel magnetoresistive heads

G. C. Han, B. Y. Zong, P. Luo, L. Wang, Z. B. Guo, S. N. Mao

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Hard bias effect on thermally activated magnetic noise has been investigated through changing the biasing direction in three types of tunnel magnetoresistive (TMR) heads with different head structures and sensor widths. It is found that characteristic variation in the noise spectra is different for different TMR heads. The results can be explained through stiffness field difference in different TMR heads. No additional ferromagnetic resonance (FMR) was observed in accompanying with the hard bias weakness. The resonant frequency as a function of field at different bias angles can be qualitatively accounted for by relevant stiffness field variations. 0

Original language	English (US)
Pages (from-to)	3597-3600
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	44
Issue number	11 PART 2
DOIs	https://doi.org/10.1109/TMAG.2008.2001647
State	Published - Nov 2008
Externally published	Yes

Keywords

FMR
Hard bias
Magnetic noise
TMR heads

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2008.2001647

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title = "Hard bias effect on magnetic noise in different types of tunnel magnetoresistive heads",

abstract = "Hard bias effect on thermally activated magnetic noise has been investigated through changing the biasing direction in three types of tunnel magnetoresistive (TMR) heads with different head structures and sensor widths. It is found that characteristic variation in the noise spectra is different for different TMR heads. The results can be explained through stiffness field difference in different TMR heads. No additional ferromagnetic resonance (FMR) was observed in accompanying with the hard bias weakness. The resonant frequency as a function of field at different bias angles can be qualitatively accounted for by relevant stiffness field variations. 0",

keywords = "FMR, Hard bias, Magnetic noise, TMR heads",

author = "Han, {G. C.} and Zong, {B. Y.} and P. Luo and L. Wang and Guo, {Z. B.} and Mao, {S. N.}",

year = "2008",

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doi = "10.1109/TMAG.2008.2001647",

language = "English (US)",

volume = "44",

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T1 - Hard bias effect on magnetic noise in different types of tunnel magnetoresistive heads

AU - Han, G. C.

AU - Zong, B. Y.

AU - Luo, P.

AU - Wang, L.

AU - Guo, Z. B.

AU - Mao, S. N.

PY - 2008/11

Y1 - 2008/11

N2 - Hard bias effect on thermally activated magnetic noise has been investigated through changing the biasing direction in three types of tunnel magnetoresistive (TMR) heads with different head structures and sensor widths. It is found that characteristic variation in the noise spectra is different for different TMR heads. The results can be explained through stiffness field difference in different TMR heads. No additional ferromagnetic resonance (FMR) was observed in accompanying with the hard bias weakness. The resonant frequency as a function of field at different bias angles can be qualitatively accounted for by relevant stiffness field variations. 0

AB - Hard bias effect on thermally activated magnetic noise has been investigated through changing the biasing direction in three types of tunnel magnetoresistive (TMR) heads with different head structures and sensor widths. It is found that characteristic variation in the noise spectra is different for different TMR heads. The results can be explained through stiffness field difference in different TMR heads. No additional ferromagnetic resonance (FMR) was observed in accompanying with the hard bias weakness. The resonant frequency as a function of field at different bias angles can be qualitatively accounted for by relevant stiffness field variations. 0

KW - FMR

KW - Hard bias

KW - Magnetic noise

KW - TMR heads

UR - http://www.scopus.com/inward/record.url?scp=70350611946&partnerID=8YFLogxK

U2 - 10.1109/TMAG.2008.2001647

DO - 10.1109/TMAG.2008.2001647

M3 - Article

AN - SCOPUS:70350611946

SN - 0018-9464

VL - 44

SP - 3597

EP - 3600

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 11 PART 2

ER -

Hard bias effect on magnetic noise in different types of tunnel magnetoresistive heads

Abstract

Keywords

ASJC Scopus subject areas

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