STUDY OF DOMAIN WALL MOTION OF ROUND MARKS IN AN EXCHANGE-COUPLED CoNi/Pt FILM-Reference-Cited by-同舟云学术

STUDY OF DOMAIN WALL MOTION OF ROUND MARKS IN AN EXCHANGE-COUPLED CoNi/Pt FILM

Published:2009-02 Issue:01 Volume:04 Page:41-45
ISSN:1793-2920
Container-title:Nano
language:en
Short-container-title:NANO

Author:

ZHANG LI¹,PENG JIE-GANG²,ZHONG ZHI-YONG³,ZU XIAO-TAO¹

Affiliation:

1. Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China

2. College of Automation, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China

3. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China

Abstract

We study the motion of domain wall in round marks formed in an exchange-coupled CoNi/Pt film, suitable for perpendicular magnetic recording. Marks were written by probe-based magnetic recording, with an average size of 180 nm. By applying external magnetic field on those marks, they begin to shrink. The minimum field required to move the domain wall of marks, i.e., domain wall coercivity, is 60% the nucleation coercivity of the medium. A model of dynamic domain motion was executed to study the stability of magnetic domains in exchange-coupled perpendicular media. It shows that the domain wall coercivity is a better fit than the nucleation coercivity to calculate the minimum stable domain size of the medium.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,General Materials Science

Link

https://www.worldscientific.com/doi/pdf/10.1142/S1793292009001496

Reference19 articles.

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2. Disk recording beyond 100 Gb/in.2: Hybrid recording? (invited)

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