The Use of BaF2 Buffer Layers for the Sputter-Deposition of Ticabacuo Thin-Film Superconductors Academic Article uri icon

abstract

  • AbstractThin films of the Tlbased superconductors often have relatively poor properties because of film/substrate interdiffusion which occurs during the anneal. We have therefore investigated the use of BaF2 as a diffusion barrier. TICaBaCuO thin films were deposited by dc magnetron sputtering onto MgO <100> substrates, both with and without an evaporationdeposited BaF2 buffer layer, and postannealed in a Tl overpressure. Electrical properties of the films were determined by fourpoint probe analysis, and compositions were measured by ionbackscattering spectroscopy. Structural analysis was performed by Xray diffraction and scanning electron microscopy. The BaF2 buffer layers were found to significantly improve the properties of the TICaBaCuO thin films.

published proceedings

  • MRS Advances

author list (cited authors)

  • Hubbard, K. M., Arendt, P. N., Brown, D. R., Cooke, D. W., Elliott, N. E., Fan, J. D., ... Reeves, G. A.

citation count

  • 0

complete list of authors

  • Hubbard, KM||Arendt, PN||Brown, DR||Cooke, DW||Elliott, NE||Fan, JD||Nastasi, M||Ott, KC||Peterson, EJ||Reeves, GA

publication date

  • January 1989