Magnetic domain structures governed by granular morphology in La 0:6Sr0:4MnO3 thin films as probed by low-temperature magnetic force microscopy

Shinji Muranaka, Hidetaka Sugaya, Takashi Yamasaki, Tomoteru Fukumura, Masashi Kawasaki, Tetsuya Hasegawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We investigated magnetic domain structures in granular La 0:6Sr0:4MnO3 thin films using magnetic force microscopy (MFM) at 78 K. Scanning-mode atomic force microscopy (AFM) resolved individual grains ̃50nm in diameter, while MFM imaged perpendicular magnetic domains. The magnetic field distribution gradually inverted across the magnetic domain boundaries, and the width of the transition region reached ̃250 nm. We postulate that the grains behave as single domains with either in- or out-of-plane magnetization and that in-plane domains are stabilized near the magnetic domain boundaries.

Original languageEnglish
Article number063002
JournalApplied Physics Express
Volume2
Issue number6
DOIs
Publication statusPublished - 2009 Jun

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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