Electric field control of magnetic exchange coupling

Karin Leistner; Juliane Wunderwald; Norman Lange; Steffen Oswald; Manuel Richter; Hongbin Zhang; Ludwig Schultz; Sebastian Fähler

doi:10.1103/PhysRevB.87.224411

Electric field control of magnetic exchange coupling

Materials Science 2013-06-19 v3

Authors: Karin Leistner , Juliane Wunderwald , Norman Lange , Steffen Oswald , Manuel Richter , Hongbin Zhang , Ludwig Schultz , Sebastian Fähler

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Abstract

Electric control of magnetism is a vision which drives intense research on magnetic semiconductors and multiferroics. Recently, also ultrathin metallic films were reported to show magnetoelectric effects at room temperature. Here we demonstrate much stronger effects by exploiting reduction/oxidation reactions in a naturally grown oxide layer exchange coupled to an underlying ferromagnet. For the exemplarily studied FePt/iron oxide composite in an electrolyte, a large and reversible change of magnetization and anisotropy is obtained. The principle can be transferred to various metal/oxide combinations. It represents a novel approach towards multifunctionality.

Keywords

multiferroic ultrafast magnetization dynamics magnetic anisotropy

Cite

@article{arxiv.1206.2467,
  title  = {Electric field control of magnetic exchange coupling},
  author = {Karin Leistner and Juliane Wunderwald and Norman Lange and Steffen Oswald and Manuel Richter and Hongbin Zhang and Ludwig Schultz and Sebastian Fähler},
  journal= {arXiv preprint arXiv:1206.2467},
  year   = {2013}
}

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17 pages, 7 figures

Electric field control of magnetic exchange coupling

Abstract

Keywords

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