Micromagnetic modelling of SANS in longitudinal recording media

F. Y. Ogrin; S. L. Lee

doi:10.1016/j.physb.2004.03.057

Micromagnetic modelling of SANS in longitudinal recording media

F. Y. Ogrin^*, S. L. Lee

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

A micromagnetic calculation of the magnetic structure factor is performed for a model sample of longitudinal medium to investigate the dependence of the scattering intensity profile I_m(q) on the intrinsic parameters of the magnetocrystalline anisotropy and intergranular exchange coupling. It is demonstrated that changes in the ratio of the external to the anisotropy field H/H_k lead to significant differences in the profile. The formation of domains, owing to increased coupling, can also change the period and the amplitude of the profile oscillations.

Original language	English
Pages (from-to)	e229-e232
Journal	Physica B: Condensed Matter
Volume	350
Issue number	1-3 SUPPL. 1
DOIs	https://doi.org/10.1016/j.physb.2004.03.057
Publication status	Published - 15 Jul 2004

Keywords

Exchange coupling
Longitudinal magnetic recording media
Magnetocrystalline anisotropy
Small angle neutron scattering

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10.1016/j.physb.2004.03.057

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abstract = "A micromagnetic calculation of the magnetic structure factor is performed for a model sample of longitudinal medium to investigate the dependence of the scattering intensity profile Im(q) on the intrinsic parameters of the magnetocrystalline anisotropy and intergranular exchange coupling. It is demonstrated that changes in the ratio of the external to the anisotropy field H/Hk lead to significant differences in the profile. The formation of domains, owing to increased coupling, can also change the period and the amplitude of the profile oscillations.",

keywords = "Exchange coupling, Longitudinal magnetic recording media, Magnetocrystalline anisotropy, Small angle neutron scattering",

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AU - Lee, S. L.

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N2 - A micromagnetic calculation of the magnetic structure factor is performed for a model sample of longitudinal medium to investigate the dependence of the scattering intensity profile Im(q) on the intrinsic parameters of the magnetocrystalline anisotropy and intergranular exchange coupling. It is demonstrated that changes in the ratio of the external to the anisotropy field H/Hk lead to significant differences in the profile. The formation of domains, owing to increased coupling, can also change the period and the amplitude of the profile oscillations.

AB - A micromagnetic calculation of the magnetic structure factor is performed for a model sample of longitudinal medium to investigate the dependence of the scattering intensity profile Im(q) on the intrinsic parameters of the magnetocrystalline anisotropy and intergranular exchange coupling. It is demonstrated that changes in the ratio of the external to the anisotropy field H/Hk lead to significant differences in the profile. The formation of domains, owing to increased coupling, can also change the period and the amplitude of the profile oscillations.

KW - Exchange coupling

KW - Longitudinal magnetic recording media

KW - Magnetocrystalline anisotropy

KW - Small angle neutron scattering

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M3 - Article

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VL - 350

SP - e229-e232

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-3 SUPPL. 1

ER -

Micromagnetic modelling of SANS in longitudinal recording media

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Keywords

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