Characterization of anisotropy field dispersion in perpendicular media

Enhong Yuan; R. H. Victora

doi:10.1109/TMAG.2004.829324

Characterization of anisotropy field dispersion in perpendicular media

Enhong Yuan, R. H. Victora

Electrical and Computer Engineering

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

19 Scopus citations

Abstract

Two of the most publicized methods for anisotropy field dispersion characterization, the M-H loop method and the complex transverse susceptibility (TS) method, are evaluated with micromagnetic simulation. For the M-H loop method, the measured parameter is found to be dependent on grain saturation magnetization and easy axis dispersion, but only weakly dependent on intergranular exchange. It also depends on the dispersion of the anisotropy field as originally proposed. For the complex TS method, the technique is calculated to be most dependent on the intergranular exchange and exhibit little dependence on microstructure.

Original language	English (US)
Pages (from-to)	2452-2454
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	40
Issue number	4 II
DOIs	https://doi.org/10.1109/TMAG.2004.829324
State	Published - Jul 2004

Bibliographical note

Funding Information:
Manuscript received October 16, 2003. This work was supported in part by the Information Storage Industry Consortium Extremely High Density Recording program and in part by the National Science Foundation under Grant ECS0300209.

Keywords

Anisotropy field dispersion
Micromagnetics
Perpendicular recording
Perpendicular recording media

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title = "Characterization of anisotropy field dispersion in perpendicular media",

abstract = "Two of the most publicized methods for anisotropy field dispersion characterization, the M-H loop method and the complex transverse susceptibility (TS) method, are evaluated with micromagnetic simulation. For the M-H loop method, the measured parameter is found to be dependent on grain saturation magnetization and easy axis dispersion, but only weakly dependent on intergranular exchange. It also depends on the dispersion of the anisotropy field as originally proposed. For the complex TS method, the technique is calculated to be most dependent on the intergranular exchange and exhibit little dependence on microstructure.",

keywords = "Anisotropy field dispersion, Micromagnetics, Perpendicular recording, Perpendicular recording media",

author = "Enhong Yuan and Victora, {R. H.}",

note = "Funding Information: Manuscript received October 16, 2003. This work was supported in part by the Information Storage Industry Consortium Extremely High Density Recording program and in part by the National Science Foundation under Grant ECS0300209.",

year = "2004",

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doi = "10.1109/TMAG.2004.829324",

language = "English (US)",

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journal = "IEEE Transactions on Magnetics",

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AU - Yuan, Enhong

AU - Victora, R. H.

N1 - Funding Information: Manuscript received October 16, 2003. This work was supported in part by the Information Storage Industry Consortium Extremely High Density Recording program and in part by the National Science Foundation under Grant ECS0300209.

PY - 2004/7

Y1 - 2004/7

N2 - Two of the most publicized methods for anisotropy field dispersion characterization, the M-H loop method and the complex transverse susceptibility (TS) method, are evaluated with micromagnetic simulation. For the M-H loop method, the measured parameter is found to be dependent on grain saturation magnetization and easy axis dispersion, but only weakly dependent on intergranular exchange. It also depends on the dispersion of the anisotropy field as originally proposed. For the complex TS method, the technique is calculated to be most dependent on the intergranular exchange and exhibit little dependence on microstructure.

AB - Two of the most publicized methods for anisotropy field dispersion characterization, the M-H loop method and the complex transverse susceptibility (TS) method, are evaluated with micromagnetic simulation. For the M-H loop method, the measured parameter is found to be dependent on grain saturation magnetization and easy axis dispersion, but only weakly dependent on intergranular exchange. It also depends on the dispersion of the anisotropy field as originally proposed. For the complex TS method, the technique is calculated to be most dependent on the intergranular exchange and exhibit little dependence on microstructure.

KW - Anisotropy field dispersion

KW - Micromagnetics

KW - Perpendicular recording

KW - Perpendicular recording media

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 4 II

ER -

Characterization of anisotropy field dispersion in perpendicular media

Abstract

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Keywords

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