The influence of partial substitution of Ca by La on (Bi,Pb)2223 phase purity and intergranular dissipative processes is characterized by XRD and a.c.magnetic susceptibility function of temperature and a.c. field amplitude. The intergranular phase diagram Hp function of temperature and the intragrain contributions of effective volume fraction of the grains fg were estimed.

Epitaxial Bi:2201 thin films were deposited on SrTiO3 (100) substrate using the DC magnetron sputtering method. Optimal deposition conditions for superconducting films with smooth film surface and high epitaxial quality were obtained. The effect of partial oxygen pressure (fO2) in sputtering gas on the electrical resistivity was studied. The phase diagram for transition temperature and localization temperature function of oxygen partial pressure

We report on the synthesis of electron-doped Sr1-xLaxCuO2 thin films by a sputtering technique. Single phase c-axis oriented thin films were epitaxially grown on various oxide substrates, with better results on DyScO3 and KTaO3. Our preliminary results on the structural and electronic properties of the thin films are presented.