First-order reversal curve analysis of graded anisotropy FePtCu films
Artikel i vetenskaplig tidskrift, 2010
The reversal mechanisms of graded anisotropy FePtCu films have been investigated by alternating gradient magnetometer (AGM) and magneto-optical Kerr effect (MOKE) measurements with first-order reversal curve (FORC) techniques. The AGM-FORC analysis, which clearly shows the presence of soft and hard components, is unable to resolve how these phases are distributed throughout the film thickness. MOKE-FORC measurements, which preferentially probe the surface of the film, reveal that the soft components are indeed located toward the top surface. Combining AGM-FORC with the inherent surface sensitivity of MOKE-FORC analysis allows for a comprehensive analysis of heterogeneous systems such as graded materials. © 2010 American Institute of Physics
Författare
Valentina Bonanni
Chalmers, Fysik, Teoretisk fysik
Kungliga Tekniska Högskolan (KTH)
Y. Fang
Kungliga Tekniska Högskolan (KTH)
Randy K. Dumas
Göteborgs universitet
C. Zha
Kungliga Tekniska Högskolan (KTH)
Stefano Bonetti
Kungliga Tekniska Högskolan (KTH)
Josep Nogues
Consejo Superior de Investigaciones Científicas (CSIC)
Kungliga Tekniska Högskolan (KTH)
Johan Åkerman
Göteborgs universitet
Kungliga Tekniska Högskolan (KTH)
Applied Physics Letters
0003-6951 (ISSN) 1077-3118 (eISSN)
Vol. 97 20 202501Ämneskategorier (SSIF 2011)
Annan teknik
DOI
10.1063/1.3515907