Published date: Oct 08 2018

Journal Title: KnE Engineering

Issue title: Breakthrough directions of scientific research at MEPhI: Development prospects within the Strategic Academic Units

Pages: 416–421

DOI: 10.18502/keg.v3i6.3022

M V Likholetovamarinalikholetova@yahoo.com

I E Lezova

E V Shevchenko

E V Charnaya

M K Lee

L-J Chang

Y A Kumzerov

A V Fokin

The dc and ac magnetizations were studied for the eutectic Ga-Ag alloy embedded into a porous glass with 7 nm mean pore size. The measurements were performed within a temperature range of 1.9 to 10 K which covers the superconducting transition for the nanocomposite. The onset of superconductivity at the magnetic field 10 Oe was found at about 7.1 K which is much higher than in bulk gallium. The phase diagram showed a positive curvature at low magnetic fields. The activation energy of vortex mobility was calculated at different magnetic fields using the ac data.

Keywords: Ga-Ag eutectic alloy, superconductivity, nanoconfinement

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