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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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.",

author = "Shinji Muranaka and Hidetaka Sugaya and Takashi Yamasaki and Tomoteru Fukumura and Masashi Kawasaki and Tetsuya Hasegawa",

note = "Funding Information: The authors thank Ron Cordell for allowing Cystosoma saundersii phonotaxis trials to be carried ol).t on his property, near Port Macquarie, and Deanne Whitworth for assisting with Cyclochila australasiae phonotaxis trials in Melbourne. This work was supported by the Australian Research Council Small Grants Scheme.",

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AU - Yamasaki, Takashi

AU - Fukumura, Tomoteru

AU - Kawasaki, Masashi

AU - Hasegawa, Tetsuya

N1 - Funding Information: The authors thank Ron Cordell for allowing Cystosoma saundersii phonotaxis trials to be carried ol).t on his property, near Port Macquarie, and Deanne Whitworth for assisting with Cyclochila australasiae phonotaxis trials in Melbourne. This work was supported by the Australian Research Council Small Grants Scheme.

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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

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