Abstract
The melt method is used for synthesizing monodispersed spherical silica nanoparticles Gdx-SiyOz:Eu3+. 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 Eu3+ 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 GdxSiyOz : Eu3+ are promising for use as a contrast agent for magnetic resonance tomography and luminescent marker.
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