@article{article4b740716, title = {Superparamagnetism and magnetic properties of Ni nanoparticles embedded in 'SiO IND.2'}, author = {Fonseca, F C and Goya, Gerardo Fabían and Jardim, Renato de Figueiredo and Muccillo, R and Carreño, N L V and Longo, E and Leite, E R}, year = {2002}, doi = {10.1103/physrevb.66.104406}, journal = {Physical Review B} }