Superconducting and structural properties of sputtered thin films of YBa2Cu3O7-x

Makous, J. L.; Maritato, L.; Falco, Charles M.; Cronin, J. P.; Rajendran, G. P.; Uhlmann, E. V.; Uhlmann, D. R.
December 1987
Applied Physics Letters;12/21/1987, Vol. 51 Issue 25, p2164
Academic Journal
We have fabricated thin films of YBa2Cu3Ox by dc triode sputtering from two metallic targets. Post-annealing in pure O2 after sputtering resulted in superconducting films with a Tc onset as high as 89 K and a midpoint Tc of 75 K. We report preliminary results of films deposited on sapphire, MgO and sol-gel coatings of ZrO2 on sapphire, with and without buffer layers of Ag. The chemical and physical structures of these films were analyzed by using several x-ray diffraction techniques and Rutherford backscattering spectroscopy.


Related Articles

  • Superconductivity and resputtering effects in rf sputtered YBa2Cu3O7-x thin films. Shah, S. I.; Carcia, P. F. // Applied Physics Letters;12/21/1987, Vol. 51 Issue 25, p2146 

    Superconducting stoichiometric YBa2Cu3O7-x films have been grown by rf sputtering of a single bulk material target in an Ar+10% O2 sputtering atmosphere on a variety of substrates. Films on SrTiO3 substrates exhibited the best post-annealing superconducting properties with the critical onset...

  • Synthesis and properties of high-Tc YBa2Cu3O7-y oriented thin films. Zhao, B. R.; Yuan, C. W.; Zhang, Y. Z.; Gao, J.; Zhao, Y. Y.; Xu, P.; Yang, Y. M.; Li, L. // Journal of Applied Physics;10/1/1990, Vol. 68 Issue 7, p3493 

    Reports on the preparation of the a- and c-axis-oriented YBa[sub2]Cu[sub3]O[sub7-y] thin films by radio-frequency magnetron sputtering technique. Characteristics of the samples; Superconductivity; Details on the critical current density.

  • Preparation of superconducting thin films of bismuth strontium calcium copper oxides by reactive sputtering. Face, D. W.; Neal, M. J.; Matthiesen, M. M.; Kucera, J. T.; Crain, J.; Graybeal, J. M.; Orlando, T. P.; Rudman, D. A. // Applied Physics Letters;7/18/1988, Vol. 53 Issue 3, p246 

    Superconducting thin films of Bi-Sr-Ca-Cu-oxides have been reproducibly prepared by reactive magnetically enhanced triode sputtering using three separate metal targets (Sr, Ca, and Cu-Bi). Oxygen was introduced directly at the substrates during film growth. The films were deposited on ambient...

  • Superconducting (Nd,Ce)2CuO4 thin films grown by rf magnetron sputtering. Adachi, Hideaki; Hayashi, Shigenori; Setsune, Kentaro; Hatta, Shin-ichiro; Mitsuyu, Tsuneo; Wasa, Kiyotaka // Applied Physics Letters;6/26/1989, Vol. 54 Issue 26, p2713 

    Thin films of an electron-doped-type (Nd,Ce)2CuO4 system have been prepared by rf magnetron sputtering and subsequent annealing. The films showed a highly oriented structure with the c axis normal to the film plane. They exhibited superconductivity after the reducing treatment by heating at...

  • Reduction of surface particles on YBa2Cu3O7-∂ thin films through the use of nonstoichiometric sputtering targets and N2O in the sputtering gas. Johnson, C. N. L.; Helmersson, U.; Madsen, L. D.; Rudner, S.; Wernlund, L.-D. // Journal of Applied Physics;6/15/1995, Vol. 77 Issue 12, p6388 

    Presents a study which investigated how the surface particle coverage and superconducting properties of direct current-magnetron sputtered thin films change as a function of target stoichiometry. Relationship between the possible barium desorption and the formulation of secondary phases; Results...

  • Magnetic flux penetration depth study in Nb/Co system. Lee, S. F.; Liou, Y.; Yao, Y. D.; Shih, W. T.; Yu, C. // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p5564 

    A series of Co/Nb bilayers, Nb/Co/Nb and Co/Nb/Co trilayer thin films are made by dc sputtering. Magnetic hysteresis loops are measured to study the interplay between superconductor and ferromagnet. Our results show the influence of large exchange field and small spin-orbit interaction on...

  • Preparation of YBa2Cu3O7-δ thin films by magnetron sputtering with in situ plasma oxidation. Yang, Senzu; Wu, Peiheng; Ji, Zhengming; Sun, Zhijian; Zhang, Ruojian; Li, Yuan; Zhang, Shiyuan; Zhang, Hongchai; Liu, Hanmo // Journal of Applied Physics;9/1/1990, Vol. 68 Issue 5, p2308 

    Presents a study which investigated the preparation of superconducting YBa[sub2]Cu[sub3]O[sub7-6] thin films by magnetron sputtering with in situ plasma oxidation. Details on the experiment; Results of the study; Conclusions.

  • Superconductivity of Y-123/Ba0.1CuOz//Y-123 Thin Film System. Koba, Shinichiro; Hakuraku, Yoshinori // AIP Conference Proceedings;2006, Vol. 850 Issue 1, p457 

    By measuring the ac susceptibility of YBa2Cu3O7-δ/BaxCu-Oz/YBa2Cu3O-δ (Y-123/BaxCuOz/Y-123) thin films, a variation of Tc with time has been observed. The optimal offset transition temperature (Tce) of a simple Y-123 film in this study was 88.7K. However, the superconducting transition of...

  • Photoconductivity of CuInSe[sub 2] films. Rud’, V. Yu.; Rud’, Yu. V. // Semiconductors;Nov97, Vol. 31 Issue 11, p1151 

    CulnSe[sub 2] thin films were grown by vacuum sputtering of presynthesized material from a single source. The room-temperature photoconductivity spectra of the films were obtained. It was determined that the photoconductivity of these films depends strongly on the preparation conditions and,...


Read the Article


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

Try another library?
Sign out of this library

Other Topics