Title: Magnetic Domain Structures Governed by Granular Morphology in La<sub>0.6</sub>Sr<sub>0.4</sub>MnO<sub>3</sub>Thin Films as Probed by Low-Temperature Magnetic Force Microscopy
Abstract: We investigated magnetic domain structures in granular La0.6Sr0.4MnO3 thin films using magnetic force microscopy (MFM) at 78 K. Scanning-mode atomic force microscopy (AFM) resolved individual grains ∼50 nm 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.
Publication Year: 2009
Publication Date: 2009-05-29
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 3
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