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Perpendicular magnetocrystalline anisotropy in tetragonally distorted Fe-Co alloys
Department of Physics, Uppsala Universitet, Box 530, 751-21 Uppsala, Sweden.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
Department of Engineering Sciences, Uppsala Universitet, Box 534, 75121 Uppsala, Sweden.
Björck, M., Department of Physics, Uppsala Universitet, Box 530, 751-21 Uppsala, Sweden.
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2006 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 96, no 3Article in journal (Refereed) Published
Abstract [en]

We report on the experimental realization of tetragonal Fe-Co alloys as a constituent of Fe0.36Co0.64/Pt superlattices with huge perpendicular magnetocrystalline anisotropy energy, reaching 210µeV/atom, and a saturation magnetization of 2.5µB/atom at 40 K, in qualitative agreement with theoretical predictions. At room temperature the corresponding values 150µeV/atom and 2.2µB/atom are achieved. This suggests that Fe-Co alloys with carefully chosen combinations of composition and distortion are good candidates for high-density perpendicular storage materials. © 2006 The American Physical Society.

Place, publisher, year, edition, pages
2006. Vol. 96, no 3
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-50310DOI: 10.1103/PhysRevLett.96.037205OAI: diva2:271206
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-11

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Burkert, Till
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