Low Temperature Physics: 41, 39 (2015); https://doi.org/10.1063/1.4906335
Fizika Nizkikh Temperatur: Volume 41, Number 1 (January 2015), p. 52-56    ( to contents , go back )

The influence of restricted geometry of the diamagnetic nanoporous media on the 3He relaxation

E.M. Alakshin1, R.R. Gazizulin1, M.Yu. Zakharov1, A.V. Klochkov1, E.V. Morozov2

T.M. Salikhov1, T.R. Safin1, K.R. Safiullin1, M.S. Tagirov1, and O.V. Shabanova3

1Kazan Federal University, 18 Kremlyovska Str., Kazan 420008, Russia
E-mail: alakshin@gmail.com

2L.V. Kirenskiy Institute of Physics, Siberian Branch of the Russian Academy of Sciences Krasnoyarsk 660036, Russia

3Специальное конструкторско-технологическое бюро «Наука» КНЦ СО РАН просп. Мира, 53, г. Красноярск, 660049, Россия
pos Анотація:

Received September 16, 2014

Abstract

The spin kinetics of 3He in contact with diamagnetic samples of inverse SiO2 opals and LaF3 nanopowders is investigated experimentally. The experimental results testify that the nuclear magnetic relaxation of adsorbed 3He occurs through the modulation of dipole–dipole interactions by quantum movements in a 2D layer while the relaxation of liquid 3He occurs through a spin-diffusion to the adsorbed layer. It is shown that the restricted geometry of diamagnetic nanoporous media influences the 3He relaxation process.

PACS: 67.30.E– Normal phase of 3He;
PACS: 67.30.er Magnetic properties, NMR;
PACS: 67.30.ht Restricted geometries;
PACS: 61.43.Gt Powders, porous materials.

Key words: NMR, nanoparticles, LaF3, inverse opal, 3Не

Published online: November 24, 2014

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