Analysing SANS data to determine magnetisation reversal processes in composite perpendicular magnetic recording media using TEM images

Stephen Joseph Shelford Lister; J. Kohlbrecher; Vikash Venkataramana; T. Thomson; Stephen Leslie Lee; K. Takano

doi:10.3139/146.110562

Analysing SANS data to determine magnetisation reversal processes in composite perpendicular magnetic recording media using TEM images

Stephen Joseph Shelford Lister, J. Kohlbrecher, Vikash Venkataramana, T. Thomson, Stephen Leslie Lee, K. Takano

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

Abstract

Perpendicular magnetic recording media based on CoCrPt–SiOx thin-films have been studied with polarised small angle neutron scattering (SANSPOL) to probe the local (sub-10 nm) granular structure and its magnetisation distribution. SANSPOL is sensitive to the direction of the magnetisation vector in the grains over a size range of 1–100 nm. This allows the grain size dependent magnetic reversal process to be probed in the recording layer. SANSPOL data can be analysed both using numerical models and through comparison with the granular structure determined using transmission electron microscopy. In this paper we compare these two methods in detail and demonstrate that both approaches arrive at very similar conclusions

Original language	English
Pages (from-to)	1142-1146
Journal	International Journal of Materials Research
Volume	102
Issue number	9
DOIs	https://doi.org/10.3139/146.110562
Publication status	Published - Sept 2011

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10.3139/146.110562

Advanced Characterisation of Magnetic: Advanced Characterisation of Magnetic Recording Media using Neutron Scattering
Lee, S. (PI)
EPSRC
1/11/07 → 31/03/11
Project: Standard

Cite this

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title = "Analysing SANS data to determine magnetisation reversal processes in composite perpendicular magnetic recording media using TEM images",

abstract = "Perpendicular magnetic recording media based on CoCrPt–SiOx thin-films have been studied with polarised small angle neutron scattering (SANSPOL) to probe the local (sub-10 nm) granular structure and its magnetisation distribution. SANSPOL is sensitive to the direction of the magnetisation vector in the grains over a size range of 1–100 nm. This allows the grain size dependent magnetic reversal process to be probed in the recording layer. SANSPOL data can be analysed both using numerical models and through comparison with the granular structure determined using transmission electron microscopy. In this paper we compare these two methods in detail and demonstrate that both approaches arrive at very similar conclusions",

author = "Lister, {Stephen Joseph Shelford} and J. Kohlbrecher and Vikash Venkataramana and T. Thomson and Lee, {Stephen Leslie} and K. Takano",

year = "2011",

month = sep,

doi = "10.3139/146.110562",

language = "English",

volume = "102",

pages = "1142--1146",

journal = "International Journal of Materials Research",

number = "9",

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Analysing SANS data to determine magnetisation reversal processes in composite perpendicular magnetic recording media using TEM images. / Lister, Stephen Joseph Shelford; Kohlbrecher, J.; Venkataramana, Vikash et al.
In: International Journal of Materials Research, Vol. 102, No. 9, 09.2011, p. 1142-1146.

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

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T1 - Analysing SANS data to determine magnetisation reversal processes in composite perpendicular magnetic recording media using TEM images

AU - Lister, Stephen Joseph Shelford

AU - Kohlbrecher, J.

AU - Venkataramana, Vikash

AU - Thomson, T.

AU - Lee, Stephen Leslie

AU - Takano, K.

PY - 2011/9

Y1 - 2011/9

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AB - Perpendicular magnetic recording media based on CoCrPt–SiOx thin-films have been studied with polarised small angle neutron scattering (SANSPOL) to probe the local (sub-10 nm) granular structure and its magnetisation distribution. SANSPOL is sensitive to the direction of the magnetisation vector in the grains over a size range of 1–100 nm. This allows the grain size dependent magnetic reversal process to be probed in the recording layer. SANSPOL data can be analysed both using numerical models and through comparison with the granular structure determined using transmission electron microscopy. In this paper we compare these two methods in detail and demonstrate that both approaches arrive at very similar conclusions

U2 - 10.3139/146.110562

DO - 10.3139/146.110562

M3 - Article

VL - 102

SP - 1142

EP - 1146

JO - International Journal of Materials Research

JF - International Journal of Materials Research

IS - 9

ER -

Analysing SANS data to determine magnetisation reversal processes in composite perpendicular magnetic recording media using TEM images

Abstract

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Advanced Characterisation of Magnetic: Advanced Characterisation of Magnetic Recording Media using Neutron Scattering

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