Continuously graded anisotropy in single (Fe53Pt47)(100-x)Cu-x films
2010 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 97, no 18, 182504- p.Article in journal (Refereed) Published
We report on continuously graded anisotropy. During deposition, a compositional gradient is achieved by varying the Cu concentration from Cu-rich (Fe53Pt47)(70)Cu-30 to Cu-free Fe53Pt47. The anisotropy gradient is then realized after annealing using the composition dependence of the low-anisotropy (A1) to high-anisotropy (L1(0)) ordering temperature. The critical role of the annealing temperature on the resultant anisotropy gradient is investigated. Magnetic measurements support the creation of an anisotropy gradient in properly annealed films which exhibit both a reduced coercivity and moderate thermal stability. These results demonstrate that an anisotropy gradient can be realized, and tailored, in single continuous films without the need for multilayers.
Place, publisher, year, edition, pages
2010. Vol. 97, no 18, 182504- p.
IdentifiersURN: urn:nbn:se:kth:diva-27099DOI: 10.1063/1.3505521ISI: 000283934100045ScopusID: 2-s2.0-78649276605OAI: oai:DiVA.org:kth-27099DiVA: diva2:375828
QC 201012092010-12-092010-12-062011-05-25Bibliographically approved