%0 Journal Article
%@ 0928-0707
%A Vu, Thi Hong Ha
%A Timur, Sh. Atabaev
%A Nguyen, Nang Dinh
%A Hwang, Yoon-Hwae
%A Kim, Hyung-Kook
%D 2014
%F SisLab:1253
%J Journal of Sol-Gel Science and Technology
%N 3
%P 391-395
%T Luminescent core–shell Fe3O4@Gd2O3:Er3+,Li+Composite Particles with Enhanced Optical Properties
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/1253/
%V 71
%X Bifunctional magneto-optical nanocomposites with Fe3O4 nanoparticles as a core and erbium and lithium codoped gadolinium (Gd2O3:Er3+, Li+) as the shell were synthesized successfully using a simple urea homogeneous precipitation method. The fabricated Fe3O4@Gd2O3:Er3+, Li+ particles were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, photoluminescence spectroscopy and quantum design vibrating sample magnetometry. The upconversion emission intensity was enhanced significantly comparing to that without Li+ ions. These bifunctional composites are expected to be potentially applied for drug delivery, cell separation and bioimaging.