The surface morphology, microstructure and transport properties of the thin films are clearly a function of deposition temperature and post-annealing conditions.It is seen from our experimental data that post- annealing is required to obtain a single phase and to form a smooth surface. Also, the critical temperature is increased due to post annealing.The recrystallized films showed a leaf -like grain morphology and a significant improve ment of Tc, strongly suggesting that the process of amorphization by thermal annealing maybe an effective way to obtain a c-axis oriented Bi-2212 films with improved superconducting properties.
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2008: Materials, Fabrication, Particles, and Characterization – Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, Volume 1
Published: June 1, 2008
Pages: 1030 - 1033
Industry sector: Advanced Materials & Manufacturing
Topic: Materials Characterization & Imaging