Title: ПРАВИЛА ОФОРМЛЕНИЯ ТЕЗИСОВ КОНФЕРЕНЦИИ ВНКСФ-7
Author: Sergey Trapeznikov
Last saved by: Денис
Company: Saint-Petersburg State University

Specialization: 010700/03  Physics of condensed state of matter
Program: 41 Coherent phonons and NMR in solids
Head of the program: prof. E.V. Charnaya
Department of Solid State Physics
Scientific supervisor: prof. E.V. Charnaya
Reviewer: doctor of sciences Yu.A. Kumzerov

NMR studies of Ga-In eutectic embedded into an opal matrix.
Nefedov Denis

NMR studies of Ga-In eutectic alloy embedded into an opal matrix were carried out. Experimental data were obtained for both gallium isotopes ^71Ga and ^69Ga within the temperature range from 100 to 300 K at a magnetic field of 9.4 T using a Bruker Avance 400 pulse spectrometer. 
Increase of the spin-relaxation rate with increasing temperature was observed for solid gallium-indium alloy formed below 140 K upon cooling. From the analysis of temperature dependence of the spin-relaxation rate the conclusion was made that magnetic relaxation dominates at low temperatures while at temperatures higher than 200 K the contribution of quadrupole relaxation increases. The correlation times of atomic mobility were evaluated and the activation energy was obtained. The reason of a very narrow line for solid Ga was discussed. The correlation time of atomic mobility was also obtained for the liquid bulk eutectic alloy and eutectic alloy embedded into an opal matrix at room temperature.

The list of the publications
1. D. Nefedov. NMR study of spin relaxation // Conference abstracts International Student Conference “Science and Progress”, St. Petersburg – Peterhof, 2011. p.248.

Scientific adviser ________ ( E.V. Charnaya)

Reviewer ________ ( Yu.A. Kumzerov)

Master ________ (D. Nefedov)