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Title: In-plane anisotropy of coercive field in permalloy square ring arrays.

Abstract

Magnetic ring arrays are promising candidates for application in magnetic random access memory devices. The magnetic reversal processes and anisotropy of the coercivity in arrays of square-shaped nanorings with different spacings were investigated by vector magneto-optical Kerr effect magnetometry, magnetic force microscopy, and micromagnetic simulations. Two-step magnetization reversal demonstrates fourfold symmetry in the film plane resulting from the shape anisotropy in rings. Our numerical simulations show good agreement with the experiment.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); FOR; National Science Foundation (NSF)
OSTI Identifier:
915320
Report Number(s):
ANL/MSD/CP-117266
Journal ID: ISSN 0021-8979; JAPIAU; TRN: US200817%%457
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Journal Name: J. Appl. Phys.; Journal Volume: 99; Journal Issue: 8 ; Apr. 15, 2006; Conference: 50th Conference on Magnetism and Magnetic Materials (MMM 2005); Oct 30 - Nov 3, 2005; San Jose, CA
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; ANISOTROPY; ATOMIC FORCE MICROSCOPY; KERR EFFECT; MAGNETIC FIELDS; MAGNETIC MATERIALS; MAGNETISM; MAGNETIZATION; MEMORY DEVICES; PERMALLOY; SHAPE; SYMMETRY; VECTORS

Citation Formats

Goncharov, A. V., Zhukov, A. A., Metlushko, V. V., Bordignon, G., Fangohr, H., Karapetrov, G., de Groot, P. A. J., Ilic, B., Materials Science Division, Univ. Southampton, Univ. Illinois at Chicago, and Cornell Univ.. In-plane anisotropy of coercive field in permalloy square ring arrays.. United States: N. p., 2006. Web. doi:10.1063/1.2171949.
Goncharov, A. V., Zhukov, A. A., Metlushko, V. V., Bordignon, G., Fangohr, H., Karapetrov, G., de Groot, P. A. J., Ilic, B., Materials Science Division, Univ. Southampton, Univ. Illinois at Chicago, & Cornell Univ.. In-plane anisotropy of coercive field in permalloy square ring arrays.. United States. doi:10.1063/1.2171949.
Goncharov, A. V., Zhukov, A. A., Metlushko, V. V., Bordignon, G., Fangohr, H., Karapetrov, G., de Groot, P. A. J., Ilic, B., Materials Science Division, Univ. Southampton, Univ. Illinois at Chicago, and Cornell Univ.. Sat . "In-plane anisotropy of coercive field in permalloy square ring arrays.". United States. doi:10.1063/1.2171949.
@article{osti_915320,
title = {In-plane anisotropy of coercive field in permalloy square ring arrays.},
author = {Goncharov, A. V. and Zhukov, A. A. and Metlushko, V. V. and Bordignon, G. and Fangohr, H. and Karapetrov, G. and de Groot, P. A. J. and Ilic, B. and Materials Science Division and Univ. Southampton and Univ. Illinois at Chicago and Cornell Univ.},
abstractNote = {Magnetic ring arrays are promising candidates for application in magnetic random access memory devices. The magnetic reversal processes and anisotropy of the coercivity in arrays of square-shaped nanorings with different spacings were investigated by vector magneto-optical Kerr effect magnetometry, magnetic force microscopy, and micromagnetic simulations. Two-step magnetization reversal demonstrates fourfold symmetry in the film plane resulting from the shape anisotropy in rings. Our numerical simulations show good agreement with the experiment.},
doi = {10.1063/1.2171949},
journal = {J. Appl. Phys.},
number = 8 ; Apr. 15, 2006,
volume = 99,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}

Conference:
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