Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-25T15:16:30.423Z Has data issue: false hasContentIssue false
  • English
  • Français

Inclined Substrate Deposition by Evaporation of Magnesium Oxide for Coated Conductors

Published online by Cambridge University Press:  10 February 2011

Markus Bauer ,
Ralf Metzger ,
Robert Semerad ,
Paul Berberich  and
Helmut Kinder
Markus Bauer
Affiliation:
Technische Universität München, Physik Department, D-85747 Garching, Germany
Ralf Metzger
Affiliation:
Technische Universität München, Physik Department, D-85747 Garching, Germany
Robert Semerad
Affiliation:
Technische Universität München, Physik Department, D-85747 Garching, Germany
Paul Berberich
Affiliation:
Technische Universität München, Physik Department, D-85747 Garching, Germany
Helmut Kinder
Affiliation:
Technische Universität München, Physik Department, D-85747 Garching, Germany
Get access

Abstract

Biaxially textured MgO buffer layers were deposited on metal substrates using “inclined substrate deposition” (ISD). The influence of the substrate inclination angle, deposition rate, and film thickness on the texture is shown. Scanning electron microscopy reveals columnar growth. We developed a growth model to explain the texturing. To test this model we have carried out 3D Monte-Carlo simulations. We find that the preferred orientation arises from mutual shadowing of the columns and directional surface diffusion due to their initial momentum.

YBa2Cu3O7 (YBCO) films deposited on the ISD buffer layers are highly textured. The ab-planes of the YBCO are tilted with respect to the surface by typically 25° towards the direction of MgO vapor incidence. Therefore, the critical current density jc is anisotropic with up to 8 × 105 MA/cm2 in one direction and 4 × 105 MA/cm2 in the other. For tape coating the MgO deposition direction can be chosen so that the high jc is along the tape.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 585: Symposium L – Fundamental Mechanisms of Low-Energy-Beam Modified Surface , 1999 , 35
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Hasegawa, K., Yoshica, N., Fujinao, K., Mukai, H., Hayashi, K., Sato, K., Ohkuma, T., Honjo, S., Ishii, H., and Hara, T., Proc. of 16 th ICEC / ICMC (Elsevier Science, Amsterdam, 1997), p. 1413.Google Scholar
2. Bauer, M., Semerad, R., and Kinder, H., IEEE Transactions on Appl. Superconductivity 9, 1502(1999).Google Scholar
3. Kinder, H., Berberich, P., Prusseit, W., S. Rieder-Zecha, Semerad, R., and Utz, B., Physica C 282–287, 107 (1997).Google Scholar
4. lijima, Y., Hosaka, M., Tanabe, N., Sadakata, N., Saitoh, T., Kohno, O., and Yoshitomi, J., Advances in Superconductivity 4 (Springer, Hong Kong, 1997), p. 741.Google Scholar
5. Moodie, A. F. and Warble, C. E., J. Cryst. Growth 10, 26(1971).Google Scholar
6. Abelmann, L. and Lodder, C., Thin Solid Films 305, 1 (1997).Google Scholar
7. Hashimoto, T., Okamoto, K., Fujiwara, H., Itoh, K., Hara, K., and Kamiya, M., Thin Solid Films 192, 335(1990).Google Scholar