Magnetization reversal of ferromagnetic nanoparticles under inhomogeneous magnetic field

Joonyeon Chang, Hyunjung Yi, Hyun Cheol Koo, V. L. Mironov, B. A. Gribkov, A. A. Fraerman, S. A. Gusev, S. N. Vdovichev

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We investigated remagnetization processes in ferromagnetic nanoparticles under inhomogeneous magnetic field induced by the tip of magnetic force microscope (MFM) in both theoretical and empirical ways. Systematic MFM observations were carried out on arrays of submicron-sized elliptical ferromagnetic particles of Co and FeCr with different sizes and periods. It clearly reveals the distribution of remanent magnetization and processes of local remagnetization of individual ferromagnetic particles. Modeling of remagnetization processes in ferromagnetic nanoparticles under magnetic field induced by MFM probe was performed on the base of Landau-Lifshitz-Gilbert equation for magnetization. MFM-induced inhomogeneous magnetic field is very effective to control the magnetic state of individual ferromagnetic nanoparticles as well as to create different distribution of magnetic field in array of ferromagnetic nanoparticles.

Original languageEnglish
Pages (from-to)272-277
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume309
Issue number2
DOIs
Publication statusPublished - 2007 Feb 1
Externally publishedYes

Keywords

  • Magnetic force microscopy
  • Magnetization reversal
  • Single magnetic domain
  • Vortex

ASJC Scopus subject areas

  • Condensed Matter Physics

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  • Cite this

    Chang, J., Yi, H., Koo, H. C., Mironov, V. L., Gribkov, B. A., Fraerman, A. A., Gusev, S. A., & Vdovichev, S. N. (2007). Magnetization reversal of ferromagnetic nanoparticles under inhomogeneous magnetic field. Journal of Magnetism and Magnetic Materials, 309(2), 272-277. https://doi.org/10.1016/j.jmmm.2006.07.015