Publications (1)3.3 Total impact

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    ABSTRACT: We manipulate the magnetic states of ferromagnetic nanorings with an azimuthal Oersted field directed along the ring circumference. The circular field is generated by passing current through an atomic force microscope tip positioned at the center of the ring, and can directly control the chirality of the vortex state. We demonstrate switching from an onion state to a vortex state and between two vortex states, using magnetic force microscopy to image the resulting magnetic states. The understanding of the magnetization switching behavior in an azimuthal Oersted field could improve practical magnetic data storage devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3599714]
    Applied Physics Letters 06/2011; 98(24):242505. DOI:10.1063/1.3599714 · 3.30 Impact Factor