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The Core Structure of Dislocations in GaAs

Published online by Cambridge University Press:  25 February 2011

B. C. De Cooman ,
K.-H. Kuesters  and
C. B. Carter
B. C. De Cooman
Affiliation:
Department of Materials Science and Engineering, Bard Hall, Cornell University, Ithaca NY 14853
K.-H. Kuesters
Affiliation:
Siemens AG, Zentral Bereich Technik ZFE ME43, D-8000-Munich, FRG
C. B. Carter
Affiliation:
Department of Materials Science and Engineering, Bard Hall, Cornell University, Ithaca NY 14853
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Abstract

The structural aspects of dislocations in GaAs which had been plastically deformed at high stress were studied by TEM. The glide of well-defined dislocations in their slip-plane was observed during the recombination-enchanced relaxation of the dislocations from their high-stress configuration. The strong asymmetry of dislocation velocity previously observed by other techniques is confirmed. High-resolution, electron micrographs of dissociated end-on screw dislocations were compared to computer simulated micrographs of model structures of the dislocation core. No definite conclusion regarding the exact core structure could be made due to the movement of the defects during the observation.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 62: Symposium Q – Materials Problem Solving with the Transmission Electron Microscope , 1985 , 37
Copyright
Copyright © Materials Research Society 1986

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References

1. Ourmazd, A. Contemp.Phys.,25,No.3,(1984),p.251 CrossRefGoogle Scholar
2. Wessel, K., Alexander, H. Phil.Mag.,35,No.6,(1977),p. 1523 Google Scholar
3. Hirth, J.P., J.Lothe Theory of Dislocations 2nd ed.,John Wiley & Sons Publ.,(1982)Google Scholar
4. Haussermann, F., Schaumburg, H. Phil.Mag.,27,(1973),p.745 CrossRefGoogle Scholar
5. Gomez, A., Cockayne, D.J.H., Hirsch, P.B., Vitek, V. Phil.Mag.,31,(1975),p.105 CrossRefGoogle Scholar
6. Gomez, A., Hirsch, P.B. Phil.Mag.,38,(1978),p.733 Google Scholar
7. Takeuchi, S., Maeda, K. Jpn.J.Appl.Phys.,20,(1981),L165 CrossRefGoogle Scholar
8. J.Klaer Diplomarbeit Universitat Koln FRG,(1983)Google Scholar
9. Maeda, K., Takeuchi, S. Compte Rendu du Colloque International du CNRS, Eds.CNRS,(1984),p.331 Google Scholar
10. Feuillet, G. M.S. Dissertation University of Oxford,(1982)Google Scholar
11. Olsen, A., J.C.H.Spence Phil.Mag, 43,(1981),p.945 CrossRefGoogle Scholar
12. Anstis, G.R., Hirsch, P.B., Humphreys, C.J., Hutchinson, J.L., Ourmazd, A. Inst.Phys.Conf.Ser.No.60, Cullis, A.G. and Joy, D.C. eds.,(1981),p.15Google Scholar
13. Tanaka, M., Jouffrey, B. Phil.Mag.,50,No.6,(1984),p.733 Google Scholar
14. Gottschalk, H. Journal de Physique Colloque C4, suppl.to No.9,44,(1983),p.C4–69 Google Scholar
15. Kuesters, K.-H., De Cooman, B.C., C.B.Carter accepted for publication in Phil.Mag.Google Scholar
16. Ourmazd, A., Anstis, G.R., Hirsch, P.B. Phil.Mag.,48,No. l,(1983),p.139 CrossRefGoogle Scholar
17. Weber, E., Ennen, H., Kaufmann, U., Windscheif, J., Schneide, J., Wosinski, T. J.Appl.Phys.,53,(1982),p.6140 Google Scholar