Field dependence of magnetic viscosity of CoCrTa in-plane media

Phan Le Kim; Cock Lodder; Theo Popma

doi:10.1016/S0304-8853(98)00437-5

Field dependence of magnetic viscosity of CoCrTa in-plane media

Phan Le Kim^*, Cock Lodder, Theo Popma

^*Corresponding author for this work

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

5 Citations (Scopus)

3 Downloads (Pure)

Abstract

In this paper we will present a study of magnetic viscosity as a function of applied field of CoCrTa/Cr in-plane media. The viscosity versus applied field curves (viscosity curves) of the samples exhibit a sharp peak at remanence coercivity (Hcr). Their activation volume was found to be close to the physical volume of the grains. The experimental viscosity curves are fitted to the simulated curves obtained by using an analytical model of Chantrell et al. [1]. Our simulation results give better understanding of the roles of the distribution function and the energy barrier in the formation of the viscosity curves. Based on the results, the relation between the peak position of the viscosity curves and the values of coercivity and remanence coercivity are explained.

Original language	English
Pages (from-to)	249-252
Number of pages	3
Journal	Journal of magnetism and magnetic materials
Volume	193
Issue number	1-3
DOIs	https://doi.org/10.1016/S0304-8853(98)00437-5
Publication status	Published - 1999
Event	7th International Conference of Magnetic Recording Media, MRM 1998 - Maastricht, Netherlands Duration: 30 Aug 1998 → 2 Sept 1998 Conference number: 7

Keywords

SMI-EXP: EXPERIMENTAL TECHNIQUES
SMI-TST: From 2006 in EWI-TST
In-plane media
Time-dependence
Viscosity
Analytical model
Activation volume

Access to Document

10.1016/S0304-8853(98)00437-5

5 Citations
1 Poster
1 Special issue

Proceedings of the Seventh International Conference on Magnetic Recording Media (MRM'98): August 30- September 2, 1998, Maastricht, the Netherlands
de Haan, P. & Lodder, J. C., Mar 1999, In: Journal of magnetism and magnetic materials. 193, 1-3, 535 p.
Research output: Contribution to journal › Special issue › Academic › peer-review
Field dependence of magnetic viscosity of CoCrTa in-plane media
Kim, P. L., Lodder, C. & Popma, T., 30 Aug 1998. 1 p.
Research output: Contribution to conference › Poster › Other research output

Cite this

@article{bfc12a3593e545f7a290d62e725c119d,

title = "Field dependence of magnetic viscosity of CoCrTa in-plane media",

abstract = "In this paper we will present a study of magnetic viscosity as a function of applied field of CoCrTa/Cr in-plane media. The viscosity versus applied field curves (viscosity curves) of the samples exhibit a sharp peak at remanence coercivity (Hcr). Their activation volume was found to be close to the physical volume of the grains. The experimental viscosity curves are fitted to the simulated curves obtained by using an analytical model of Chantrell et al. [1]. Our simulation results give better understanding of the roles of the distribution function and the energy barrier in the formation of the viscosity curves. Based on the results, the relation between the peak position of the viscosity curves and the values of coercivity and remanence coercivity are explained.",

keywords = "SMI-EXP: EXPERIMENTAL TECHNIQUES, SMI-TST: From 2006 in EWI-TST, In-plane media, Time-dependence, Viscosity, Analytical model, Activation volume",

author = "Kim, {Phan Le} and Cock Lodder and Theo Popma",

year = "1999",

doi = "10.1016/S0304-8853(98)00437-5",

language = "English",

volume = "193",

pages = "249--252",

journal = "Journal of magnetism and magnetic materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

number = "1-3",

note = "7th International Conference of Magnetic Recording Media, MRM 1998, MRM ; Conference date: 30-08-1998 Through 02-09-1998",

}

TY - JOUR

T1 - Field dependence of magnetic viscosity of CoCrTa in-plane media

AU - Kim, Phan Le

AU - Lodder, Cock

AU - Popma, Theo

N1 - Conference code: 7

PY - 1999

Y1 - 1999

N2 - In this paper we will present a study of magnetic viscosity as a function of applied field of CoCrTa/Cr in-plane media. The viscosity versus applied field curves (viscosity curves) of the samples exhibit a sharp peak at remanence coercivity (Hcr). Their activation volume was found to be close to the physical volume of the grains. The experimental viscosity curves are fitted to the simulated curves obtained by using an analytical model of Chantrell et al. [1]. Our simulation results give better understanding of the roles of the distribution function and the energy barrier in the formation of the viscosity curves. Based on the results, the relation between the peak position of the viscosity curves and the values of coercivity and remanence coercivity are explained.

AB - In this paper we will present a study of magnetic viscosity as a function of applied field of CoCrTa/Cr in-plane media. The viscosity versus applied field curves (viscosity curves) of the samples exhibit a sharp peak at remanence coercivity (Hcr). Their activation volume was found to be close to the physical volume of the grains. The experimental viscosity curves are fitted to the simulated curves obtained by using an analytical model of Chantrell et al. [1]. Our simulation results give better understanding of the roles of the distribution function and the energy barrier in the formation of the viscosity curves. Based on the results, the relation between the peak position of the viscosity curves and the values of coercivity and remanence coercivity are explained.

KW - SMI-EXP: EXPERIMENTAL TECHNIQUES

KW - SMI-TST: From 2006 in EWI-TST

KW - In-plane media

KW - Time-dependence

KW - Viscosity

KW - Analytical model

KW - Activation volume

U2 - 10.1016/S0304-8853(98)00437-5

DO - 10.1016/S0304-8853(98)00437-5

M3 - Article

SN - 0304-8853

VL - 193

SP - 249

EP - 252

JO - Journal of magnetism and magnetic materials

JF - Journal of magnetism and magnetic materials

IS - 1-3

T2 - 7th International Conference of Magnetic Recording Media, MRM 1998

Y2 - 30 August 1998 through 2 September 1998

ER -

Field dependence of magnetic viscosity of CoCrTa in-plane media

Abstract

Keywords

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Research output

Proceedings of the Seventh International Conference on Magnetic Recording Media (MRM'98): August 30- September 2, 1998, Maastricht, the Netherlands

Field dependence of magnetic viscosity of CoCrTa in-plane media

Cite this