Diffusion slowdown in the nanostructured liquid Ga-Sn alloy

Dmitri Y. Podorozhkin, Elena V. Charnaya, Min Kai Lee, Lieh Jeng Chang, Juergen Haase, Dieter Michel, Yurii A. Kumzerov, Alexsandr V. Fokin

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The diffusion of gallium in liquid Ga-Sn alloy embedded into different porous silica matrices was studied by NMR. Spin relaxation was measured for two gallium isotopes, 71Ga and 69Ga, at two magnetic fields. Pronounced rise of quadrupole contribution to relaxation was observed for the nanostructured alloy which increased with decreasing the pore size. The correlation time of atomic mobility was evaluated and found to be much larger than in the relevant bulk melt which evidenced a pronounced diffusion slowdown in the Ga-Sn alloy under nanoconfinement. It is shown that the diffusion was slower by a factor of 30 for the alloy within 7 nm pores. The spectral densities of electric field gradients at zero frequency were found to double for the finest pores. The Knight shift was found to decrease but slightly for the nanostructured alloy.

Original languageEnglish
Pages (from-to)248-253
Number of pages6
JournalAnnalen der Physik
Volume527
Issue number3-4
DOIs
Publication statusPublished - 2015 Apr 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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