Magnetization Configuration in Magnetic Trilayer System with
Out-of-Plane Component Defect |
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Authors: | HU Jing-Guo JIN Guo-Jun MA Yu-Qiang |
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Institution: | 1. Department of Physics, Yangzhou University, Yangzhou 225002,
China
;2. National Laboratory of Solid State Microstructures and
Department of Physics, Nanjing University, Nanjing 210093, China |
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Abstract: | The equilibrium magnetization configuration, the inducing field and the coercive field in trilayer magnetic materials having an out-of-plane
anisotropy defect interlayer between two in-plane anisotropy layers are
discussed by both analytical and numerical calculations based on a
micromagnet approach. It is shown that the above physical parameters
strongly depend on the defect layer such as its thickness and exchange
stiffness etc., as well as on the applied fields. It is found that there is a special thickness of defect layer, in which the inducing effect begin to
occur, and the critical behavior of inducing field in the vicinity of the
special thickness is linearly characterized. Particularly, the magnetic hysteresis shows typical soft hysteresis shape, even though the host
material is composed of hard magnets, and the coercivity increases with
increasing the thickness of the interlayer. |
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Keywords: | magnetic trilayer system micromagnetics magnetization configuration coercive field |
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