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 University of Technology

The Royal Institute of Technology (KTH)

Y. Fang

The Royal Institute of Technology (KTH)

Randy K. Dumas

Goteborgs Universitet

C. Zha

The Royal Institute of Technology (KTH)

Stefano Bonetti

The Royal Institute of Technology (KTH)

Josep Nogues

CSIC-ICN Centro de investigacion en nanociencia y nanotecnologia CIN2

The Royal Institute of Technology (KTH)

Johan Åkerman

Goteborgs Universitet

The Royal Institute of Technology (KTH)

Applied Physics Letters

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

Vol. 97

Ämneskategorier

Annan teknik

DOI

10.1063/1.3515907