Magnetotransport and magnetic domain structure in compressively strained colossal magnetoresistance films

Yan Wu; Y. Suzuki; U. Rüdiger; J. Yu; A. D. Kent; T. K. Nath; C. B. Eom

doi:10.1063/1.124995

Magnetotransport and magnetic domain structure in compressively strained colossal magnetoresistance films

Yan Wu, Y. Suzuki, U. Rüdiger, J. Yu, A. D. Kent, T. K. Nath, C. B. Eom

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

Abstract

We have studied the magnetoresistance (MR) of compressively strained La_0.7Sr_0.3MnO₃ (LSMO) films in various magnetic states in order to understand the role of magnetic domain structure on magnetotransport. In thin films of LSMO on (100) LaAlO₃, the perpendicular magnetic anisotropy results in perpendicularly magnetized domains with fine scale ∼200 nm domain subdivision, which we image directly at room temperature using magnetic force microscopy. The main MR effects can be understood in terms of bulk colossal MR and anisotropic MR. We also find evidence for a small domain wall contribution to the MR, which is an order of magnitude larger than expected from a double exchange model.

Original language	English (US)
Pages (from-to)	2295-2297
Number of pages	3
Journal	Applied Physics Letters
Volume	75
Issue number	15
DOIs	https://doi.org/10.1063/1.124995
State	Published - Oct 11 1999

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "We have studied the magnetoresistance (MR) of compressively strained La0.7Sr0.3MnO3 (LSMO) films in various magnetic states in order to understand the role of magnetic domain structure on magnetotransport. In thin films of LSMO on (100) LaAlO3, the perpendicular magnetic anisotropy results in perpendicularly magnetized domains with fine scale ∼200 nm domain subdivision, which we image directly at room temperature using magnetic force microscopy. The main MR effects can be understood in terms of bulk colossal MR and anisotropic MR. We also find evidence for a small domain wall contribution to the MR, which is an order of magnitude larger than expected from a double exchange model.",

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AU - Wu, Yan

AU - Suzuki, Y.

AU - Rüdiger, U.

AU - Yu, J.

AU - Kent, A. D.

AU - Nath, T. K.

AU - Eom, C. B.

PY - 1999/10/11

Y1 - 1999/10/11

N2 - We have studied the magnetoresistance (MR) of compressively strained La0.7Sr0.3MnO3 (LSMO) films in various magnetic states in order to understand the role of magnetic domain structure on magnetotransport. In thin films of LSMO on (100) LaAlO3, the perpendicular magnetic anisotropy results in perpendicularly magnetized domains with fine scale ∼200 nm domain subdivision, which we image directly at room temperature using magnetic force microscopy. The main MR effects can be understood in terms of bulk colossal MR and anisotropic MR. We also find evidence for a small domain wall contribution to the MR, which is an order of magnitude larger than expected from a double exchange model.

AB - We have studied the magnetoresistance (MR) of compressively strained La0.7Sr0.3MnO3 (LSMO) films in various magnetic states in order to understand the role of magnetic domain structure on magnetotransport. In thin films of LSMO on (100) LaAlO3, the perpendicular magnetic anisotropy results in perpendicularly magnetized domains with fine scale ∼200 nm domain subdivision, which we image directly at room temperature using magnetic force microscopy. The main MR effects can be understood in terms of bulk colossal MR and anisotropic MR. We also find evidence for a small domain wall contribution to the MR, which is an order of magnitude larger than expected from a double exchange model.

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Magnetotransport and magnetic domain structure in compressively strained colossal magnetoresistance films

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