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High resolution electron microscopy study of the cationic disorder in Al2TiO5

Published online by Cambridge University Press:  31 January 2011

T. Epicier ,
G. Thomas ,
H. Wohlfromm  and
J.S. Moya
T. Epicier*
Affiliation:
National Center for Electron Microscopy, Materials Science Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720
G. Thomas
Affiliation:
National Center for Electron Microscopy, Materials Science Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720
H. Wohlfromm*
Affiliation:
National Center for Electron Microscopy, Materials Science Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720
J.S. Moya*
Affiliation:
National Center for Electron Microscopy, Materials Science Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720
*
a)Permanent address: INSA, GEMPPM, Bât. 502, u.a. CNRS 341, 69621 Villeurbanne Cedex, France.
b)Permanent address: Institutes de Ceramica y Vidrio (CSIC), Arganda del Rey, Madrid, Spain.
b)Permanent address: Institutes de Ceramica y Vidrio (CSIC), Arganda del Rey, Madrid, Spain.
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Abstract

As part of a research program devoted to the microstructural characterization of Al2TiO5-based compounds, high resolution electron microscopy (HREM) has been undertaken in order to study the crystallographic arrangement, especially ordering possibilities, of Al and Ti cations in the metallic sublattice of aluminum titanate. It is seen that adequate experimental conditions, mainly defocus setting, for a resolution of at least 2.5 Å point-to-point, enable the disordered model to be directly and unambiguously proved on 100-oriented micrographs.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 1 , January 1991 , pp. 138 - 145
Copyright
Copyright © Materials Research Society 1991

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