mirage

Disorder and coercivity in magnetic particle systems

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Disorder and coercivity in magnetic particle systems

Show full item record

Title: Disorder and coercivity in magnetic particle systems
Author: Zhao, Yang; Bertram, H. Neal
Copyright year: 1992
Abstract: Computer simulation has been utilized to understand the hysteretic behavior of magnetic particle systems. Particles are assumed to be single domain, spherical in shape, and possess no intrinsic anisotropy. Neighboring spins are not exchange-coupled. Particles are either randomly packed or displaced from cubic lattice positions in random directions. The gyromagnetic equation of motion with Landau-Lifshitz damping is solved for each spin during a dynamic process. Regular spin arrangements yield no hysteresis or coercivity. For spin configurations randomly displaced from a cubic lattice, hysteretic behavior is observed. Coercivity increases with randomness of particle position. Detailed examination of the magnetization reversals reveals chain formations and transient vortex states in randomly packed arrays. Coercivity versus packing fraction inferred for finite sized particles shows a maximum.
Subject: DRNTU::Engineering::Materials::Magnetic materials.
Type: Journal Article
Series/ Journal Title: Journal of magnetism and magnetic materials
School: School of Materials Science and Engineering
Rights: ©1992 Elsevier This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Magnetism and Magnetic Materials, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/0304-8853(92)90275-S].
Version: Accepted version

Files in this item

Files Size Format View
Disorder and co ... netic particle systems.pdf 322.1Kb PDF View/Open
   

DOI Query

- Get published version (via Digital Object Identifier)
   

This item appears in the following Collection(s)

Show full item record

Statistics

Total views

All Items Views
Disorder and coercivity in magnetic particle systems 514

Total downloads

All Bitstreams Views
Disorder and coercivity in magnetic particle systems.pdf 267

Top country downloads

Country Code Views
China 97
United States of America 72
Singapore 39
France 8
Russian Federation 8

Top city downloads

city Views
Mountain View 58
Beijing 40
Singapore 38
Culiacán 4
Redwood City 4