Optical and magnetic nanocomposites containing Fe3O4@SiO2 grafted with Eu3+ and Tb3+ complexes - Khan, Latif Ullah; Muraca, Diego; Brito, Hermi Felinto de; Londono, O. Moscoso; Felinto, Maria Claudia França da Cunha; Pirota, K. R; Teotonio, Ercules Epaminondas de Sousa; Malta, Oscar L (Journal of Alloys and Compounds, 2016)