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Publication Citation: Microwave assisted magnetization reversal in single domain nanoelements

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Author(s): Hans T. Nembach; Hans Bauer; Justin M. Shaw; Michael Schneider; Thomas J. Silva;
Title: Microwave assisted magnetization reversal in single domain nanoelements
Published: July 06, 2009
Abstract: We studied the microwave assisted magnetic reversal in 65×71 nm2 elliptical Ni80Fe20 nanomagnets with a thickness of 10 nm. Hysteresis curves were measured by magneto-optical Kerr effect for a range of microwave frequencies and amplitudes. We observe a strong reduction in the coercive field when the microwave frequency coincides with the experimentally determined ferromagnetic resonance frequency in the switching region. This process occurs despite a small microwave amplitude relative to the coercive field. The experimental results were compared to numerical simulations and show good agreement.
Citation: Applied Physics Letters
Volume: 95
Pages: pp. 1 - 3
Keywords: nanomagnetics,magnetic recording,microwave assisted magnetic reversal,magnetic switching,energy assisted magnetic reversal
Research Areas: Nanomagnetics
PDF version: PDF Document Click here to retrieve PDF version of paper (204KB)