Low Temperature Physics: 41, 67 (2015); https://doi.org/10.1063/1.4906340
Fizika Nizkikh Temperatur: Volume 41, Number 1 (January 2015), p. 86-89    ( to contents , go back )

NMR of water colloidal solutions of nanosized crystalline particles of LaF3 and LaF3:Gd3+

E.M. Alakshin, B.I. Gizatullin, M.Yu. Zakharov, A.V. Klochkov, T.M. Salikhov, V.D. Skirda, and M.S. Tagirov

Kazan Federal University, 18 Kremlyovska Str., Kazan 420008, Russia
E-mail: mikhailzakharo@yandex.ru
pos Анотація:

Received September 16, 2014

Abstract

The 1H nuclear magnetic relaxation of water col-loidal solutions of nanosized crystalline particles of LaF3 and LaF3:Gd3+(0.5%) has been investigated. The NMR signal of protons was registered by "Proton-20M (Chromatech)" NMR spectrometer. It is found that the longitudinal relaxation rate depends on concentration of nanoparticles in the water solution and their size. It is shown that the relaxation rate of protons in the LaF3:Gd3+ solution increases with concentration of the paramagnetic ions in the solid matrix and decreases with increasing nanoparticle size.

PACS: 76.60.–k Nuclear magnetic resonance and relaxation;
PACS: 81.07.Wx Nanopowders.

Key words: NMR, nanoparticles, LaF3, LaF3:Gd3+.

Published online: November 24, 2014

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