Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-24T19:50:59.337Z Has data issue: false hasContentIssue false
  • English
  • Français

The Phase Diagram of Hydrogen in Ultra Thin Films

Published online by Cambridge University Press:  15 February 2011

N. M. Jisrawi ,
W. Ruckman ,
G. Reisfeld ,
H. Wiesmann ,
F. Loeb ,
E. Gallego ,
Y. Gorelik ,
T. R. Thurston  and
Myron Strongin
N. M. Jisrawi
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
W. Ruckman
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
G. Reisfeld
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
H. Wiesmann
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
F. Loeb
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
E. Gallego
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
Y. Gorelik
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
T. R. Thurston
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
Myron Strongin
Affiliation:
Department of Physics, Brookhaven National Laboratory, Upton, NY 11973
Get access

Abstract

In this paper, we discuss changes in the phase diagram of hydrogen in both bilayer (i.e. 200–2000 Å Nb/ 100 Å Pd on glass) and multilayer configurations. In fact, it is the changes in this phase diagram, in addition to the Pd coating, that makes theses bilayer systems useful for hydrogen gas sensors. Comparison of x-ray diffraction, electrical resistivity and volumetric measurements of the films before and after hydrogen charging indicate that the phase equilibria between a correlated (high concentration) and a dilute phase of hydrogen in Nb is not sensitive to the number of layers in the films. On the other hand, the experimental methods show different behavior for 200 Å thick Nb films and thicker (>400 Å) Nb layers. Diffraction results showing unisotropic lattice expansion will also be discussed..

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 403: Symposium I – Polycrystalline Thin Films: Structure, Texture, Properties and Applications II , 1995 , 571
Copyright
Copyright © Materials Research Society 1996

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] Blasser, S., Steiger, J., and Weidinger, A.. Nuclear Instruments and Methods in Physics Research B 85, 24 (1994).Google Scholar
[2] Steiger, J., Blasser, A. S., Boebel, O., Erxmeyer, J., Mertesacker, B. and Weidinger, A.. Zeitchrift fur Physikalische Chemie, Bd. 181, S. 367 (1993).Google Scholar
[3] Steiger, J., Blasser, A. S., and Weidinger, A.. Phys Rev. B 49, 5570 (1994).Google Scholar
[4] Moehlecke, S., Majkrzak, C. F., and Strongin, Myron. Phys. Rev. B 31, 6804 (1985).Google Scholar
[5] Zabel, H. and Peisl, H.. Phys. Rev. Lett. 42, 511 (1979).Google Scholar
[6] Reisfeld, G., Jisrawi, Najeh M., Ruckman, M. W. and Strongin, Myron. Accepted to Phys. Rev. B.Google Scholar
[7] Pick, M. A., Davenport, J. W., Strongin, Myron, and Dienes., G. J. Phys Rev. Lett. 43, 286 (1979).Google Scholar
[8] Miceli, P. F., Zabel, H., and Cunningham., J. E. Phys. Rev. Lett. 54, 917 (1985).Google Scholar
[9] Reimer, P. M., Zabel, H., Flynn, C. P., Matheny, J. A., Ritley, K., Steiger, J., Blasser, S. and Weidinger, A.. Zeitchrift fur Phsikalische Chemie, Bd. 181, S. 367 (1993).Google Scholar