Open AccessМонодисперсные сферические наночастицы Gd-=SUB=-x-=/SUB=-Si-=SUB=-y-=/SUB=-O-=SUB=-z-=/SUB=- : Eu-=SUP=-3+-=/SUP=- для магнитно-резонансной томографии и оптической визуализации
Author(s) -
D. A. Eurov,
Д.А. Курдюков,
Elena V. Shornikova,
Qiang Guo,
Д.Р. Яковлев,
М. Bayer,
В. Г. Голубев
Publication year - 2019
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2019.04.47424.323
Subject(s) - luminescence , photoluminescence , materials science , analytical chemistry (journal) , ion , nanoparticle , intensity (physics) , spectral line , nuclear magnetic resonance , nanotechnology , chemistry , optics , physics , optoelectronics , organic chemistry , chromatography , astronomy
AbstractThe melt method is used for synthesizing monodispersed spherical silica nanoparticles Gd_ x -Si_ y O_ z :Eu^3+. The particle diameter is 450 nm, and the standard deviation does not exceed 5%. The nanoparticles have a line luminescence spectrum with a dominant band at 614 nm. The effect of a constant magnetic field up to 15 T on the intensity and shape of the luminescence spectra of Eu^3+ ions is studied. It is shown that the obtained material has a stable photoluminescence, the intensity of which does not depend on the magnetic field in the entire studied range. The synthesized nanoparticles Gd_ x Si_ y O_ z : Eu^3+ are promising for use as a contrast agent for magnetic resonance tomography and luminescent marker.