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High-resolution electron microscopy of dislocations of MgO

Published online by Cambridge University Press:  03 March 2011

J. Ohta ,
K. Suzuki  and
T. Suzuki
J. Ohta
Affiliation:
Institute of Industrial Science, Univers ity of Tokyo, Roppongi, Minato-ku, Tokyo 106, Japan
K. Suzuki
Affiliation:
Institute for Solid State Physics, University of Tokyo, Roppongi, Minato-ku, Tokyo 106, Japan
T. Suzuki
Affiliation:
Institute of Industrial Science, University of Tokyo, Roppongi, Minato-ku, Tokyo 106, Japan
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Abstract

Dislocations in MgO introduced by ion irradiation and by plastic deformation are observed by HREM. Depending on the Burgers vector and the dislocation character, various types of lattice images are obtained. Image simulations are performed for the inclination of dislocations, as well as for dissociated dislocations. A comparison of observed and simulated images shows that inclination of nondissociated dislocations makes them appear as if they were dissociated; in reality a/2(110) dislocations in MgO are not dissociated.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 11 , November 1994 , pp. 2953 - 2958
Copyright
Copyright © Materials Research Society 1994

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