Department of Physics and Astronomy: Publications and Other Research
Date of this Version
November 2001
Abstract
Discontinuous metal–insulator multilayers [Co80Fe20(t)/Al2O3(3 nm)]10 are prepared by ion-beam sputtering and investigated by SQUID magnetometry and previous AC susceptometry. For 1.0less-than-or-equals, slanttless-than-or-equals, slant1.6 nm, two coexisting subsystems of dipolar coupled nanoparticles are encountered. While a spin-glass-like freezing particulate fraction dominates at t=1.0 nm, a percolating dipolar ferromagnetic fraction becomes increasingly important at higher nominal thickness of t.
Comments
Published in the Journal of Magnetism and Magnetic Materials. Available online November 14, 2001. Published in May 2001, Pages 1825-1827.