TITLE

Y-Ba-Cu-O superconducting thin films by simultaneous or sequential evaporation

AUTHOR(S)
Mogro-Campero, A.; Hunt, B. D.; Turner, L. G.; Burrell, M. C.; Balz, W. E.
PUB. DATE
February 1988
SOURCE
Applied Physics Letters;2/15/1988, Vol. 52 Issue 7, p584
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Superconducting thin films of Y-Ba-Cu-O near the 1:2:3 stoichiometry were produced by simultaneous (coevaporation) and sequential (multilayer) evaporation in the same evaporator. The best film obtained on yttria-stabilized zirconia (YSZ) had a superconducting onset temperature of 104 K, a midpoint Tc of 92 K, and zero resistance at T≤74 K. Stoichiometry was deduced by inductively coupled plasma emission spectroscopy, and elemental depth profiles were obtained by x-ray photoelectron spectroscopy. Film stoichiometry changes only near the film/substrate boundary for films on YSZ. Films on Si/SiO2 were not superconducting; depth profiling shows severe changes of film composition with depth. A major theme of this work is process reproducibility, which was found to be poor for coevaporation but improved considerably for sequential evaporation.
ACCESSION #
9825973

 

Related Articles

  • Growth of high quality CHNHPbI thin films prepared by modified dual-source vapor evaporation. Fan, Ping; Gu, Di; Liang, Guang-xing; Chen, Ju-long; Luo, Jing-ting; Xie, Yi-zhu; Zheng, Zhuang-hao; Zhang, Dong-ping // Journal of Materials Science: Materials in Electronics;Mar2016, Vol. 27 Issue 3, p2321 

    In this work, a high quality CHNHPbI thin film prepared by modified dual-source vapor evaporation was proposed. An ultra-thin PbI layer was deposited firstly, and then CHNHI and PbI were evaporated simultaneously to form CHNHPbI thin film. The results show that flat, uniform, smooth, less porous...

  • Electrical and Optical Properties of GexSi1-x:H Thin Films Prepared by Thermal EvaporationMethod. Al-Douri, A. A. J.; Alias, M. F. A.; Alnajjar, A. A.; Makadsi, M. N. // Advances in Condensed Matter Physics;2010, p1 

    Thin a-GexSi1-x:H films were grown successfully by fabrication of designated ingot followed by evaporation onto glass slides. A range of growth conditions, Ge contents, dopant concentration (Al and As), and substrate temperature, were employed. Stoichiometry of the thin films composition was...

  • Influences of evaporation temperature on electronic structures and electrical properties of molybdenum oxide in organic light emitting devices. Lin, Chang-Ting; Yeh, Cheng-Hung; Chen, Mei-Hsin; Hsu, Shu-Han; Wu, Chih-I; Pi, Tun-Wen // Journal of Applied Physics;Mar2010, Vol. 107 Issue 5, p053703 

    The influence of evaporation temperatures on the electronic structures of molybdenum oxide (MoOx) films and the electrical properties of organic light emitting diodes were investigated. MoOx films evaporated at a high temperature and a high deposition rate are close to a stoichiometric phase,...

  • Electronic state characterization of SiOx thin films prepared by evaporation. Barranco, N. A.; Yubero, F.; Espinós, J. P.; Groening, P.; González-Elipe, A. R. // Journal of Applied Physics;6/1/2005, Vol. 97 Issue 11, p113714 

    SiOx thin films with different stoichiometries from SiO1.3 to SiO1.8 have been prepared by evaporation of silicon monoxide in vacuum or under well-controlled partial pressures of oxygen (P<10-6 Torr). These thin films have been characterized by x-ray photoemission and x-ray-absorption...

  • Stoichiometric amorphous MoO3 films: A route to high performance electrochromic devices. Sian, Tarsame S.; Reddy, G. B. // Journal of Applied Physics;7/15/2005, Vol. 98 Issue 2, p026104 

    The effect of stoichiometry on the coloration efficiency (η) and cycling life of MoO3 films has been investigated and underlying reasons discussed in the paper. Optical studies reveal that as-deposited and 150 °C annealed films are nonstoichiometric while films deposited by activated...

  • Influence of the temperature modulation of an incident flux on the properties of films of cadmium selenotellurides synthesized under sharply nonequilibrium conditions. Belyaev, A.; Rubets, V.; Antipov, V.; Eremina, E. // Physics of the Solid State;Jul2011, Vol. 53 Issue 7, p1516 

    Results of structural and electrical investigations of the films of cadmium selenotellurides synthesized by evaporation and condensation in vacuum under sharply nonequilibrium conditions are presented. The modulating effect of a nonuniform thermal field on the vapor phase flux has been revealed....

  • Nonaqueous chemical depth profiling of YBa2Cu3O7-x. Vasquez, R. P.; Foote, M. C.; Hunt, B. D. // Applied Physics Letters;3/13/1989, Vol. 54 Issue 11, p1060 

    A nonaqueous solution of Br in absolute ethanol (EtOH) has recently been reported [R. P. Vasquez, B. D. Hunt, and M. C. Foote, Appl. Phys. Lett. 53, 2692 (1988)] to be effective at removing nonsuperconducting surface species from YBa2 Cu3 O7-x films, leaving the surface close to the ideal...

  • Stoichiometry reversal in the growth of thin oxynitride films on Si(100) surfaces. Sutherland, D. G. J.; Akatsu, H.; Copel, M.; Himpsel, F. J.; Callcott, T. A.; Carlisle, J. A.; Ederer, D. L.; Jia, J. J.; Jimenez, I.; Perera, R.; Shuh, D. K.; Terminello, L. J.; Tong, W. M. // Journal of Applied Physics;12/1/1995, Vol. 78 Issue 11, p6761 

    Studies stoichiometry reversal in the growth of thin oxynitride films on silicon surfaces. Method of the study; Results and discussion; Conclusion.

  • Optimization of annealing parameters for the growth of epitaxial Ba2YCu3O7-x films on LaAlO3(100). Siegal, Michael P.; Phillips, Julia M.; van Dover, R. B.; Tiefel, T. H.; Marshall, J. H. // Journal of Applied Physics;12/15/1990, Vol. 68 Issue 12, p6353 

    Presents a study that proved that the superconducting and structural properties of Ba[sub2] YCu[sub3]O[sub7] films on LaAIO[sub3] (100) substrates can be improved by optimizing the post-deposition annealing parameters. Correct stoichiometric ratio; Annealing parameters in an ex situ furnace;...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics