Large critical currents and improved epitaxy of laser ablated Ag-doped YBa2Cu3O7−δ thin films
Applied Physics Letters1993Vol. 62(26), pp. 3522–3524
Citations Over TimeTop 10% of 1993 papers
Dhananjay Kumar, Madhuri Sharon, R. Pinto, P. R. Apte, S. P. Pai, S. C. Purandare, L. C. Gupta, R. Vijayaraghavan
Abstract
Microstructure and critical current densities of laser ablated YBa2Cu3O7−δ thin films doped with 2–20 wt. % Ag have been studied. A critical current density as high as 1.4×107 A cm−2 at 77 K has been realized on 〈100〉 SrTiO3 substrates with YBaCuO films doped with 5 wt. % Ag which has been found to be the optimum. Evidence indicates that the improved microstructure and epitaxy which is a consequence of grain enlargement and alignment caused by Ag is responsible for the high values of critical currents observed.
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