Superconducting Properties of VN-SiO_{2} Sol-Gel Derived Thin Films

• Authors: B. Kościelska , O. Yuzephovich , S. Bengus , A. Winiarski , W. Sadowski , M. Łapiński
• Languages of publication: EN

Abstracts

EN

In this work studies of structure and superconducting properties of VN-SiO_{2} films are reported. The films were obtained through thermal nitridation (ammonolysis) of sol-gel derived V_{2}O_{3}-SiO_{2} coatings (in a proper V_{2}O_{3}/SiO_{2} ratio) at 1200°C. This process leads to the formation of disordered structure with VN metallic grains dispersed in the insulating SiO_{2} matrix. The structural transformations occurring in the films as a result of ammonolysis were studied using X-ray photoelectron spectroscopy (XPS). The critical superconducting parameters are obtained. The magnetoresistance at high magnetic fields has been investigated.

Keywords

EN

81.20.Fw; 74.78.-w

Discipline

• 74.78.-w: Superconducting films and low-dimensional structures
• 81.20.Fw: Sol-gel processing, precipitation(for reactions in sol-gels, see 82.33.Ln; for sol-gels as disperse system, see 82.70.Gg)

• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 4
• Pages: 832-835

Dates

published

2012-04

Contributors

author

B. Kościelska

• WFaculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

author

O. Yuzephovich

• B. Verkin Institute for Low Temperature Physics and Engineering, NAS of Ukraine, Kharkov 61103, Ukraine
• International Laboratory of High Magnetic Fields and Low Temperatures, Gajowicka 95, 53-421 Wrocław, Poland

author

S. Bengus

• B. Verkin Institute for Low Temperature Physics and Engineering, NAS of Ukraine, Kharkov 61103, Ukraine
• International Laboratory of High Magnetic Fields and Low Temperatures, Gajowicka 95, 53-421 Wrocław, Poland

author

A. Winiarski

• A. Chełkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

author

W. Sadowski

• WFaculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

author

M. Łapiński

• WFaculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

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Identifiers

DOI

10.12693/APhysPolA.121.832