Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-15T02:30:58.385Z Has data issue: false hasContentIssue false
  • English
  • Français

Transmission Electron Microscopy Study of YBa2Cu3O7-x Thin Film Multilayer Devices

Published online by Cambridge University Press:  15 February 2011

M. A. Barnett ,
J. S. Abell ,
M. Aindow ,
N. G. Chew ,
P. J. Hirst  and
R. G. Humphreys
M. A. Barnett
Affiliation:
School of Metallurgy and Materials, Superconductivity Research Group, The University of Birmingham, Edgbaston, BIRMINGHAM, UK, B15 2TT
J. S. Abell
Affiliation:
School of Metallurgy and Materials, Superconductivity Research Group, The University of Birmingham, Edgbaston, BIRMINGHAM, UK, B15 2TT
M. Aindow
Affiliation:
School of Metallurgy and Materials, Superconductivity Research Group, The University of Birmingham, Edgbaston, BIRMINGHAM, UK, B15 2TT
N. G. Chew
Affiliation:
School of Metallurgy and Materials, Superconductivity Research Group, The University of Birmingham, Edgbaston, BIRMINGHAM, UK, B15 2TT
P. J. Hirst
Affiliation:
Defence Research Agency, St Andrews Road, MALVERN, Worcs, UK, WR14 3PS
R. G. Humphreys
Affiliation:
Defence Research Agency, St Andrews Road, MALVERN, Worcs, UK, WR14 3PS
Get access

Abstract

Patterned thin film multilayer structures, consisting of superconducting YBa2Cu3O7-x (YBCO) and insulating PrBa2Cu3O7-x (PrBCO), deposited onto (001) MgO substrates by electron beam co-evaporation, have been examined using Transmission Electron Microscopy (TEM). It is shown that PrBCO films grown over 30° steps in YBCO layers are free of tilt-grain boundaries. The PrBCO is c-oriented everywhere and shows pronounced faceting on the steps. Strain contrast features are present where the PrBCO has to adapt to large variations in the slope angle of the underlying YBCO layer. However, tilt-grain boundaries in YBCO or PrBCO layers are nucleated when depositing over small MgO steps formed by unintentional milling into the substrate. It is shown that grain boundaries associated with milled steps on MgO can be eliminated by the use of a PrBCO buffer layer beneath the superconducting base layer.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 474: Symposium L – Epitaxial Oxide Thin Films III , 1997 , 107
Copyright
Copyright © Materials Research Society 1997

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

REFERENCES

1. Jia, C.L., Kabius, B., Urban, K., Hermann, K., Cui, G.J., Schubert, J., Zander, W., Braginski, A.I. and Heiden, C., Physica C 175, 545(1991)Google Scholar
2. Tanaka, S., Kado, H., Matsuia, T. and Itozaki, H., IEEE Trans. Appl. Supercond 3, 2365 (1993)Google Scholar
3. Verhoeven, M.A.J., Moerman, R., Bijlsma, M.E., Rijnders, A.J.H.M., Blank, D.H.A.. Gerritsma, G.J. and Rogalla, H., Appl. Phys. Lett. 68, 1276 (1996)Google Scholar
4. Verbist, K., Lebedev, O.I., Vantendeloo, G., Verhoeven, M.A.J., Rijndersand, A.J.H.M. Blank, D.H.A., Supercond. Sci & Tech 9, 978(1996)Google Scholar
5. Liang, J.K., Xu, X.T., Xie, S.S., Rao, G.H., Shao, X. Y. and Duan, Z.G., Z. Phys. B. (Cond Mat), 69, 137 (1987)Google Scholar
6. Peng, J.L., Klavins, P., Shelton, R.N., Radousky, H.B., Hahn, P.A. and Bernardez, L., Phys. Rev. B 40, 4517, (1989)Google Scholar
7. Boguslavskij, Y.M., Gao, J., Rijnders, A.J.H.M., Terpstra, D., Gerritsma, G.J. and Rogalla, H., Physica C 194, 268 (1992)Google Scholar
8. Chew, N.G., Edwards, J.A., Humphreys, R.G., Satchell, J.S., Goodyear, S.W., Dew, B. and Exon, N.J., IEEE Trans. Appl. Supercond. 5, 1167(1995)Google Scholar
9. Humphreys, R.G., Chew, N.G., Morgan, S.F., Satchell, J.S., Cullis, A.G. and Smith, P.W., Appl. Phys. Lett. 61, 228 (1992)Google Scholar
10. Chew, N.G., Goodyear, S.W., Edwards, J.A., Satchell, J.S., Blenkinsop, S.E. and Humphreys, R.G., Appl. Phys. Lett. 57, 2016(1990)Google Scholar
11. Chew, N.G. and Cullis, A.G., Ultramicroscopy 23, 175 (1987)Google Scholar
12. Barnett, M.A., Aindow, M., Abell, J.S., Hirst, P.J., Chew, N.G. and Humphreys, R.G., In preparation, (1997)Google Scholar
13. Tanaka, S., Kado, H., Matsuura, T. and Itozaki, H., IEEE Trans. Appl. Supercond. 3, 2365 (1993)Google Scholar
14. Dimos, D., Chaudhari, P., Marmhart, J. and Legoues, F.K., Phys. Rev. Lett. 61, 219 (1988)Google Scholar
15. Hollin, C.A., Goodyear, S.W., Chew, N.G., Humphreys, R.G. and Abell, J.S., Physica C 235, 721 (1994)Google Scholar