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

  • Folven E
  • Linder J
  • Gomonay O
 et al. 
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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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  • Olena GomonayJohannes Gutenberg Universitat Mainz

  • E. Folven

  • J. Linder

  • A. Scholl

  • A. Doran

  • A. T. Young

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