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Structural Phase Transition in Tetrafluoroaluminates

Published online by Cambridge University Press:  21 February 2011

J.M. Launay ,
J.Y. Laval ,
A. Gibaud ,
A. Bulou  and
J. Nouet
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Abstract

It is shown that the detailed investigation of an irreversible SPT implies the combination of X-ray, neutron and electron diffraction data. This diffraction analysis is applied to K Al F4 and Rb Al F4. There is a good agreement between the three diffraction techniques in the case of Rb Al F4 where the SPT is reversible. On the other hand, for K Al F4 room temperature quadratic phase, electron diffraction exhibits exta spots which are not evidenced by X-ray and neutron diffraction. Finally the assumption of an orthorombic lattice from neutron scattering for the low temperature phase is consistant with electron diffraction results.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 21: Symposium GREECE – Phase Transformations in Solids , 1983 , 167
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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