AVS 51st International Symposium
    Magnetic Interfaces and Nanostructures Wednesday Sessions
       Session MI-WeM

Invited Paper MI-WeM8
Artifically and Self Organized FePd(001) Nanoparticles: Fabrication, Magnetic and Magneto-Photonic Properties

Wednesday, November 17, 2004, 10:40 am, Room 304A

Session: Magnetic Nanostructures
Presenter: A. Cebollada, IMM (CNM-CSIC), Spain
Authors: A. Cebollada, IMM (CNM-CSIC), Spain
C. Clavero, IMM (CNM-CSIC) Spain
A. Bengoechea, IMM (CNM-CSIC) Spain
J.L. Costa Kramer, IMM (CNM-CSIC), Spain
A. Garcia-Martin, IMM (CNM-CSIC), Spain
J.V. Anguita, IMM (CNM-CSIC), Spain
G. Armelles, IMM (CNM-CSIC), Spain
Y. Huttel, ICMM (CSIC), Spain
L.l. Balcells, ICMAB (CSIC), Spain
V.F. Puntes, Univ. de Barcelona, Spain
Correspondent: Click to Email
The fabrication and investigation of ordered arrays of high anisotropy and magneto-optic activity L10 FePd nanoparticles is reported. These arrays of particles are grown in 2 and 3 dimensions and embedded on single crystalline MgO(001) substrates and matrices. The deposition conditions are optimised to obtain the chemically ordered L10 phase. Several approaches are followed to obtain two dimensional nanostructured arrays: self organization, artificial generation of nucleation centres prior to growth and post growth patterning using e-beam lithography and nano-masks. The deposition of an epitaxial MgO matrix that conformally covers the FePd islands allows the subsequent growth of further FePd nano-particle layers, obtaining a 3D array of single crystalline high anisotropy particles embedded in an insulating matrix. The magnetization reversal, inter-particle magnetic interactions and magnetic anisotropies are studied in both 2D and 3D arrays, with special emphasis on the role that the reduction in dimensionality and the chemical and spatial order play in the magnetic properties. The characterization of the magneto optic and magneto photonic properties of these new materials is also performed in the same context.