Perpendicular magnetocrystalline anisotropy in tetragonally distorted Fe-Co alloys
2006 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 96, no 3, 037205- p.Article in journal (Refereed) Published
We report on the experimental realization of tetragonal Fe-Co alloys as a constituent of Fe(0.36)Co(0.64)/Pt superlattices with huge perpendicular magnetocrystalline anisotropy energy, reaching 210 mu eV/atom, and a saturation magnetization of 2.5 mu(B)/atom at 40 K, in qualitative agreement with theoretical predictions. At room temperature the corresponding values 150 mu eV/atom and 2.2 mu(B)/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.
Place, publisher, year, edition, pages
2006. Vol. 96, no 3, 037205- p.
Condensed Matter Physics Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-75248DOI: 10.1103/PhysRevLett.96.037205OAI: oai:DiVA.org:uu-75248DiVA: diva2:103158