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

E. Folven; J. Linder; O. V. Gomonay; A. Scholl; A. Doran; A. T. Young; S. T. Retterer; V. K. Malik; T. Tybell; Y. Takamura; J. K. Grepstad

doi:10.1103/PhysRevB.92.094421

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

E. Folven, J. Linder, O. V. Gomonay, A. Scholl, A. Doran, A. T. Young, S. T. Retterer, V. K. Malik, T. Tybell, Y. Takamura, J. K. Grepstad

Center for Nanophase Matls Sciences

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

10 Scopus citations

Abstract

Using soft x-ray spectromicroscopy, we investigate the magnetic domain structure in embedded nanomagnets defined in La_0.7Sr_0.3MnO₃ thin films and LaFeO₃/La_0.7Sr_0.3MnO₃ 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.

Original language	English
Article number	094421
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.92.094421
State	Published - Sep 14 2015

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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. (2015). Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets. Physical Review B - Condensed Matter and Materials Physics, 92(9), Article 094421. https://doi.org/10.1103/PhysRevB.92.094421

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abstract = "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.",

author = "E. Folven and J. Linder and Gomonay, {O. V.} and A. Scholl and A. Doran and Young, {A. T.} and Retterer, {S. T.} and Malik, {V. K.} and T. Tybell and Y. Takamura and Grepstad, {J. K.}",

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AU - Folven, E.

AU - Linder, J.

AU - Gomonay, O. V.

AU - Scholl, A.

AU - Doran, A.

AU - Young, A. T.

AU - Retterer, S. T.

AU - Malik, V. K.

AU - Tybell, T.

AU - Takamura, Y.

AU - Grepstad, J. K.

PY - 2015/9/14

Y1 - 2015/9/14

N2 - 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.

AB - 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.

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JO - Physical Review B - Condensed Matter and Materials Physics

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

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