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Anomalous Nernst Effects of [CoSiB/Pt] Multilayer Films

Journal of Magnetics, Volume 18, Number 3, 30 Sep 2013, Pages 225-229
O. Kelekci (Department of Physics and Graphene Research Institute, Sejong University), H. N. Lee (Department of Advanced Materials Science and Engineering, Sejong University), T. W. Kim (Department of Advanced Materials Science and Engineering, Sejong University), H. Noh * (Department of Physics and Graphene Research Institute, Sejong University)
Abstract

We report a measurement for the anomalous Nernst effects induced by a temperature gradient in [CoSiB/Pt] multilayer films with perpendicular magnetic anisotropy. The Nernst voltage shows a characteristic hysteresis which reflects the magnetization of the film as in the case of the anomalous Hall effects. With a local heating geometry, we also measure the dependence of the anomalous Nernst voltage on the distance d from the heating element. It is roughly proportional to 1/d1.3, which can be conjectured from the expected temperature gradient along the sample from the heat equation.

Keywords: anomalous Nernst effect; ferromagnetic film; perpendicular magnetic anisotropy; heat equation
DOI: http://dx.doi.org/10.4283/JMAG.2013.18.3.225
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