On the phenomena occurring at the interface between iron and iron–platinum thin films |
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Authors: | M Carbucicchio R Ciprian G Palombarini |
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Institution: | 1. Department of Physics, University of Parma, Parma, Italy 2. Department of Metals Science, Electrochemistry and Chemical Techniques, University of Bologna, Bologna, Italy
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Abstract: | FePt films were rf sputtered at room temperature and 550?C on MgO monocrystalline substrates. Room temperature films were post-annealed at 550?C. The high temperature growth induces a tetragonal distortion of the structure with the formation of L10-FePt phase. Soft iron layers, with different thickness, were e-beam deposited on these hard films. The phenomena occurring at the interface have been analysed and connected with the final magnetic behaviour of the system. It has been found that a strong exchange coupling between soft and hard layers has been established through the formation of an interfacial layer constituted by FePt small particles. |
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