Spin configurations in the absence of an external magnetic field in a magnetic bilayer with in-plane cubic or uniaxial anisotropies |
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| Affiliation: | 1. Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110015, People''s Republic of China;2. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, People''s Republic of China;1. California Institute of Technology, 1200 E California Blvd, MC 9-49, Pasadena, CA 91125, USA;2. California Institute of Technology, 1200 E California Blvd, MC 253-47, Pasadena, CA 91125, USA;1. Orange Poland sp. z o. o., Al. Jerozolimskie 160, 02-326 Warsaw, Poland;2. Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-688 Warsaw, Poland |
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| Abstract: | The spin configurations in the absence of an external magnetic field have been systematically investigated for a magnetic bilayer system consisting of two ferromagnetic layers separated by a non-magnetic layer with interlayer exchange coupling. Based on a phenomenological model, the conditions for the existence of collinear and non-collinear spin structures were derived for three kinds of magnetic bilayers with different combinations of in-plane cubic and uniaxial anisotropies for the two ferromagnetic layers. The phase diagrams of the spin configurations at zero field were drawn, taking into account the lowest-order anisotropy parameters of both the ferromagnetic layers. The values of the canting angle have been derived analytically and then numerically plotted. |
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