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Morphology and capping effects in the magnetic and magneto-optical properties of nanoparticulate Co films

DOI: 10.1103/PhysRevB.77.094417 DOI Help

Authors: C. Clavero (CNM-CSIC) , L. Martinez (Instituto de Ciencia de Materiales de Madrid ICMM-CSIC) , A. Garcia-martin (Instituto de Ciencia de Materiales de Madrid ICMM-CSIC) , J. M. Garcia-martin (Instituto de Ciencia de Materiales de Madrid ICMM-CSIC) , Y. Huttel (CSIC) , A. Cebollada (Univ Modena,Dipartimento Sci Terra,I-41100 Modena) , G. Armelles (Univ Modena,Dipartimento Sci Terra,I-41100 Modena) , N. D. Telling (Keele University) , G. Van Der Laan (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 77 (9) , PAGES 094417-1/12

State: Published (Approved)
Published: March 2008

Abstract: Magnetic and magneto-optical properties of Co films are studied as a function of the morphology and the capping layer. We show that the nanoparticulate structure of the Co films has a clear influence on the magnetic and magneto-optical properties of the system. Kerr measurements combined with x-ray magnetic circular dichroism provide evidence of a strong correlation between the collective magnetic behavior of the system and the individual atomic magnetic response. The influence of the magnetic nature of the capping layer (Al, Au, and Pt) is also analyzed. Polarized capping layers, such as Pt, magnetically couple the nanostructures and not only increase the effective anisotropy of the system but also enhance the atomic magnetic moment of Co and the global magneto-optical activity.

Subject Areas: Physics


Instruments: NONE-No attached Diamond beamline

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