Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets

Using soft x-ray spectromicroscopy, we investigate the magnetic domain structure in embedded nanomagnets defined in La0.7Sr0.3MnO3 thin films and LaFeO3/La0.7Sr0.3MnO3 bilayers. We find that shape-controlled antiferromagnetic domain states give rise to a significant reduction of the switching field...

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Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2015-09, Vol.92 (9), Article 094421
Main Authors: Folven, E., Linder, J., Gomonay, O. V., Scholl, A., Doran, A., Young, A. T., Retterer, S. T., Malik, V. K., Tybell, T., Takamura, Y., Grepstad, J. K.
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CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
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cited_by cdi_FETCH-LOGICAL-c351t-9edd60f0603398adaf7971c5bd5c02a9feb1e083adad8d63efc5d0d4de5424aa3
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container_issue 9
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container_title Physical review. B, Condensed matter and materials physics
container_volume 92
creator Folven, E.
Linder, J.
Gomonay, O. V.
Scholl, A.
Doran, A.
Young, A. T.
Retterer, S. T.
Malik, V. K.
Tybell, T.
Takamura, Y.
Grepstad, J. K.
description Using soft x-ray spectromicroscopy, we investigate the magnetic domain structure in embedded nanomagnets defined in La0.7Sr0.3MnO3 thin films and LaFeO3/La0.7Sr0.3MnO3 bilayers. We find that shape-controlled antiferromagnetic domain states give rise to a significant reduction of the switching field of the rectangular nanomagnets. This is discussed within the framework of competition between an intrinsic spin-flop coupling and shape anisotropy. The data demonstrates that shape effects in antiferromagnets may be used to control the magnetic properties in nanomagnets.
doi_str_mv 10.1103/PhysRevB.92.094421
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title Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets
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