High-resolution observation of magnetization processes in 2 μm × 2 μm × 0.04 μm permalloy particles

K. Runge, Yukio Nozaki, Y. Otani, H. Miyajima, B. Pannetier, T. Matsuda, A. Tonomura

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The magnetization process in an array of 2 μm × 2 μm × 0.04 μm permalloy particles fabricated on a 100 nm carbon membrane was investigated by means of high-resolution Lorentz microscopy and electron holography in magnetic fields parallel and perpendicular to the film surface. For perpendicular fields, the magnetization reversal was found to begin with the nucleation of a vortex which gradually transformed into a closure domain configuration. At the remanent state, the flux closure was achieved with the generation of a new type of doubled domain wall.

Original languageEnglish
Pages (from-to)5075-5077
Number of pages3
JournalJournal of Applied Physics
Volume79
Issue number8 PART 2A
Publication statusPublished - 1996 Apr 15

Fingerprint

Permalloys (trademark)
closures
magnetization
high resolution
holography
domain wall
nucleation
vortices
membranes
microscopy
carbon
configurations
magnetic fields
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Runge, K., Nozaki, Y., Otani, Y., Miyajima, H., Pannetier, B., Matsuda, T., & Tonomura, A. (1996). High-resolution observation of magnetization processes in 2 μm × 2 μm × 0.04 μm permalloy particles. Journal of Applied Physics, 79(8 PART 2A), 5075-5077.

High-resolution observation of magnetization processes in 2 μm × 2 μm × 0.04 μm permalloy particles. / Runge, K.; Nozaki, Yukio; Otani, Y.; Miyajima, H.; Pannetier, B.; Matsuda, T.; Tonomura, A.

In: Journal of Applied Physics, Vol. 79, No. 8 PART 2A, 15.04.1996, p. 5075-5077.

Research output: Contribution to journalArticle

Runge, K, Nozaki, Y, Otani, Y, Miyajima, H, Pannetier, B, Matsuda, T & Tonomura, A 1996, 'High-resolution observation of magnetization processes in 2 μm × 2 μm × 0.04 μm permalloy particles', Journal of Applied Physics, vol. 79, no. 8 PART 2A, pp. 5075-5077.
Runge K, Nozaki Y, Otani Y, Miyajima H, Pannetier B, Matsuda T et al. High-resolution observation of magnetization processes in 2 μm × 2 μm × 0.04 μm permalloy particles. Journal of Applied Physics. 1996 Apr 15;79(8 PART 2A):5075-5077.
Runge, K. ; Nozaki, Yukio ; Otani, Y. ; Miyajima, H. ; Pannetier, B. ; Matsuda, T. ; Tonomura, A. / High-resolution observation of magnetization processes in 2 μm × 2 μm × 0.04 μm permalloy particles. In: Journal of Applied Physics. 1996 ; Vol. 79, No. 8 PART 2A. pp. 5075-5077.
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