TY - JOUR T1 - Synthesis and characterization of magnetic nanoparticles coated with silica through a sol-gel approach JO - CerĂ¢mica A1 - Andrade, A. L. A1 - Souza, D. M. A1 - Pereira, M. C. A1 - Fabris, J. D. A1 - Domingues, R. Z. SN - 0366-6913 UL - 10.1590/S0366-69132009000400013 VL - 55 Y1 - 2009 PB - Brasil ER -