Shape dependent coercivity simulation of a spherical barium ferrite (S-BaFe) particle with uniaxial anisotropy

Gavin S. Abo, Yang Ki Hong, Jeevan Jalli, Jaejin Lee, Jihoon Park, Seok Bae, Seong Gon Kim, Byoung Chul Choi, Terumitsu Tanaka

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The coercivity of a single 27 nm-spherical barium ferrite (S-BaFe) particle was simulated using three models: 1) Gibbs free energy (GFE), 2) Landau-Lifshitz-Gilbert (LLG), and 3) Stoner-Wohlfarth (S-W). Spherically and hexagonally shaped particles were used in the GFE and LLG simulations to investigate coercivity with the different shape anisotropies. The effect of shape was not included in the S-W model. It was found that the models using a spherical shape resulted in a coercivity higher than the models using the hexagonal shape with both shapes having the same diameter. The coercivity estimated with the S-W model was approximately the same as that for the spherical-shape models, which indicates that spherical shape has no significant effect on the particle's coercivity at nanoscale

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Magnetics
Volume17
Issue number1
DOIs
Publication statusPublished - Mar 1 2012

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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