First-order reversal curve analysis of graded anisotropy FePtCu films
Journal article, 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

Author

Valentina Bonanni

Royal Institute of Technology (KTH)

Chalmers, Physics, Theoretical Physics

Y. Fang

Royal Institute of Technology (KTH)

Randy K. Dumas

University of Gothenburg

C. Zha

Royal Institute of Technology (KTH)

Stefano Bonetti

Royal Institute of Technology (KTH)

Josep Nogues

Royal Institute of Technology (KTH)

CSIC-ICN Centro de investigacion en nanociencia y nanotecnologia CIN2

Johan Åkerman

University of Gothenburg

Royal Institute of Technology (KTH)

Applied Physics Letters

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

Vol. 97 20 202501

Subject Categories

Other Engineering and Technologies

DOI

10.1063/1.3515907

More information

Latest update

4/5/2022 7