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

doi:10.1143/APEX.2.063002

Magnetic domain structures governed by granular morphology in La _0:6Sr_0:4MnO₃ 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 journal › Article › peer-review

3 Citations (Scopus)

Abstract

We investigated magnetic domain structures in granular La _0:6Sr_0:4MnO₃ 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 language	English
Article number	063002
Journal	Applied Physics Express
Volume	2
Issue number	6
DOIs	https://doi.org/10.1143/APEX.2.063002
Publication status	Published - 2009 Jun

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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Magnetic domain structures governed by granular morphology in La _0:6Sr_0:4MnO₃ thin films as probed by low-temperature magnetic force microscopy. / Muranaka, Shinji; Sugaya, Hidetaka; Yamasaki, Takashi; Fukumura, Tomoteru; Kawasaki, Masashi; Hasegawa, Tetsuya.

In: Applied Physics Express, Vol. 2, No. 6, 063002, 06.2009.

Research output: Contribution to journal › Article › peer-review

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AU - Kawasaki, Masashi

AU - Hasegawa, Tetsuya

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N2 - 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.

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Magnetic domain structures governed by granular morphology in La _0:6Sr_0:4MnO₃ thin films as probed by low-temperature magnetic force microscopy

Abstract

ASJC Scopus subject areas

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