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

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

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.

Original languageEnglish
Article number094421
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number9
DOIs
StatePublished - Sep 14 2015

Funding

FundersFunder number
U.S. Department of EnergyDE-AC02-05CH11231
National Science Foundation
Directorate for Mathematical and Physical Sciences0747896, 1411250

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