Atomic ordering and magnetism in L10 ordered FePd alloys |
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Authors: | Chaisak Issro Madjid Abes Wolfgang Püschl Bogdan Sepiol Wolfgang Pfeiler Peter F. Rogl Guy Schmerber William A. Soffa Rafal Kozubski Véronique Pierron-Bohnes |
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Affiliation: | (1) Department of Physics, Faculty of Science, Burapha University, 20131 Chonburi, Thailand;(2) Institut für Materialphysik, University of Vienna, 1090 Vienna, Austria;(3) IPCMS-GEMME, CNRS-ULP, 67034 Stasbourg Cedex 2, France;(4) Institut für Physikalische Chemie, University of Vienna, 1090 Vienna, Austria;(5) Department of Materials Science and Engineering, University of Virginia, 22904 Charlottesville, VA;(6) M. Smoluchovski Institute of Physics, Jagellonian University, 30-059 Cracow, Poland |
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Abstract: | Intermetallic compounds due to their promising corrosion resistance and high-temperature mechanical strength give hope for their application as high-temperature structural materials. Inter-metallics of L10 type structure in recent years in addition have attracted great interest as potential recording media. These alloys are ferromagnetic and display marked mechanical and magnetic anisotropy with the tetragonal c-axis of the ordered domains as the “easy axis” of magnetization High-density magnetic recording may be achieved by a preferential domain orientation with the c-axis perpendicular to the surface, if these materials can be stabilized as low-dimensional magnetic structures. Knowledge of kinetic parameters, that determine alloy stability is essential for alloy design. technical application, and performance of materials. We used FePd as a model system for this class of L10-ordered intermetallics and have studied the changes of long-range order during heat treatments in the bulk and in thin films produced by different techniques. Results of X-ray diffraction (XRD). resistivity measurement. Mößbauer spectroscopy, and measurement of magnetization in both geometries are compared. |
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