Author/Authors :
de Juliلn Fernلndez، نويسنده , , C. and Sangregorio، نويسنده , , C. Pailler-mattei، نويسنده , , G. and De، نويسنده , , G. and Saber، نويسنده , , A. and Lo Russo، نويسنده , , S. and Battaglin، نويسنده , , G. and Catalano، نويسنده , , M. S. Cattaruzza، نويسنده , , E. and Gonella، نويسنده , , F. and Gatteschi، نويسنده , , D. and Mazzoldi، نويسنده , , P.، نويسنده ,
Abstract :
Ni–Co nanoparticles embedded in an SiO2 matrix with different Co/Ni atomic ratio have been prepared by ion-implantation and sol–gel techniques. The structural and magnetic characterizations were realized to determine the alloy formation at the nanoparticle level. The magnetic properties of these materials are presented and analyzed considering the metal composition and the nanostructural features.
Keywords :
magnetic nanoparticles , Alloys , Superparamagnetism , Enhanced coercivity
