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.




Valentina Bonanni

Yeyu Fang

Randy K. Dumas

Göteborgs universitet

C. L. Zha

Stefano Bonetti

Josep Nogués

Johan Åkerman

Göteborgs universitet

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 97 20 202501, 3 pages-


Den kondenserade materiens fysik

Mer information