This article is cited in 4 papers

Low dimensional systems

Influence of size effects on the Knight shift of NMR lines in the gallium-indium alloy

D. Yu. Podorozhkin^a, E. V. Charnaya^ab, D. Michel^c, J. Haase^c, C. Tien^b, M. K. Lee^b, L. J. Chang^b, Yu. A. Kumzerov<sup>d

a</sup> Saint Petersburg State University
^b Department of Physics, National Cheng Kung University, Tainan, Taiwan
^c Faculty of Physics and Geosciences, University of Leipzig, Leipzig, Germany
^d Ioffe Institute, St. Petersburg

Abstract: A study is reported of the Knight shift of $^{71}$Ga, $^{69}$Ga, and $^{115}$In NMR lines in a liquid gallium-indium alloy with a composition of 90 at% Ga and 10 at% In, introduced into porous glasses with pore sizes of 5 and 200 nm, relative to the corresponding shifts in the bulk alloy. The measurements have been performed at room temperature. The study has revealed a size-dependent decrease in the Knight shift. A sample with a 5-nm pore size has demonstrated a noticeable difference in the magnitudes of the Knight shift of both gallium isotopes measured in magnetic fields of 9.4 and 17.6 T, which implies a dependence of the electronic susceptibility of the melt on the magnetic field under the nanoconfinement conditions.

Received: 25.10.2011

 English version: Physics of the Solid State, 2012, 54:5, 1104–1107

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