Binary activated iron oxide/SiO2/NaGdF4:RE (RE = Ce, and Eu; Yb, and Er) nanoparticles: synthesis, characterization and their potential for dual T-1-T-2 weighted imaging

New Journal of Chemistry v. 44, n. 3, p. 832-844, 2020 3.288 10.1039/c9nj03929e Shrivastava, N.; Garcia, J. ; Rocha, U. ; Ospina Ramirez, C. A.; Muraca, D.; Menezes, A. S.; Jacinto, C.; Louie, A. Y. ; Zoppellaro, G. G.; Sharma, S. K. 2020