Superconducting materials and conductors

We study the manufacturing process and properties of composite wires from superconducting materials (mostly with the MgB2 phase formed by infiltration/diffusion of Mg to boron), considering the possibilities of their practical utilization (electromagnets, power generators, motors). Broad range of experimental methods is used for electro-magnetic and electro-mechanical characterization of samples and model windings at low temperatures 4 K – 30 K in magnetic fields up to 12 T.


MgB2 wire with Ti/Al+Al2O3 sheath


Rutherford cable from MgB2/Ti/Al+Al2O3 wires


Superconducting coil made by wind-and-react process from  MgB2/Ti/Al+Al2O3 wire


Selected publications:

Kováč, P., Hušek, I., Pérez, N., Rosová, A., Berek, D., Gelušiaková, B., Kopera, L., Melišek, T., and Nielsch, K.: Structure and properties of barrier-free MgB2 composite wires made by internal magnesium diffusion process, J. Alloys Comp. 829 (2020) 154543.

Kováč, P., Bonura, M., Santra, S., Kopera, L., Rosová, A., Senatore, C., and Hušek, I.: Thermal conductivities and thermal runaways of superconducting MgB2 wires stabilized by an Al+Al2O3 sheath, Supercond. Sci Technol. 32 (2019) 115007.

Kopera, L., Kováč, P., Kováč, J., Melišek, T., Hušek, I., and Berek, D.: Small diameter wind and react coil made of anodised Al-sheathed MgB2 wire, Supercond. Sci Technol. 32 (2019) 105003.

Kováč, P., Hušek, I., Rosová, A., Kulich, M., Kováč, J., Melišek, T., Kopera, L., Balog, M., and Krížik, P.: Ultra-lightweight superconducting wire based on Mg, B, Ti and Al, Sci Reports 8 (2018) 11229.

Kováč, P., Kopera, L., Kováč, J., Hain, M., Melišek, T., Kulich, M., and Hušek, I.: Rutherford cable made of internal magnesium diffusion MgB2 wires sheathed with Al-Al2O3 particulate metal matrix composite, Supercond. Sci Technol. 31 (2018) 015015.

Kováč, P., Balog, M., Hušek, I., Kopera, Ľ., Krížik, P., Rosová, A., Kováč, J., Kulich, M., and Čaplovičová, M.:Properties of near- and sub-micrometre Al matrix composites strengthened with nano-scale in-situ Al2O3 aimed for low temperature applications, Cryogenics 87 (2017) 58–65.

Hušek, I., Kováč, P., Melišek, T., Kulich, M., Rosová, A., Kopera, Ľ., and Szundiová, B.: Superconducting MgB2 wires with vanadium diffusion barrier, Supercond. Sci Technol. 30 (2017) 105008.