The experiments to synthesize thin MgB2 intermetallic compound with the use of ion implantation and plasma pulse treatment were presented. Mg was implanted with 3 x 1018/cm2 of 80keV and 5 x 1018/cm2 of 100keV B+ ions and next treated with H and Ar plasma pulses of duration of about 1μs and fluences of between 2 and 4J/cm2. Superconducting properties were examined by magnetically modulated microwave absorption (MMMA), magnetic moment and electrical conductivity measurements. The structural properties of the implanted and pulse-treated samples were examined by the X-ray diffraction and Rutherford back-scattering methods. The main result consisted in observation of MMMA hysteresis loop demonstrating the existence of superconducting regions with TC as high as 32K. However, the zero-resistance effect had not been obtained due to incomplete global connectivity between the superconducting regions.

Superconductivity of MgB2 Thin Films Prepared by Ion Implantation and Pulsed Plasma Treatment. J.Piekoszewski, W.Kempinski, B.Andrzejewski, Z.Trybuła, L.Piekara-Sady, J.Kaszyński, J.Stankowski, Z.Werner, E.Richter, F.Prokert, J.Stanisławski, M.Barlak: Vacuum, 2005, 78[2-4], 123-9