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X-Ray Diffraction Study of Shock-Modified Tetragonal Phases of SnO2 and MnO2

Published online by Cambridge University Press:  06 March 2019

P. Newcomer ,
B. Morosin  and
R. A. Graham
P. Newcomer
Affiliation:
Sandia National Laboratories Albuquerque, New Mexico 87185
B. Morosin
Affiliation:
Sandia National Laboratories Albuquerque, New Mexico 87185
R. A. Graham
Affiliation:
Sandia National Laboratories Albuquerque, New Mexico 87185
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Abstract

X-ray diffraction line-profile analysis on tetragonal forms of SnO2 (cassiterite), MnO2 (pyrolusite), and previously studied TiO2 (rutile), which were subjected to high pressure shock loading, show that residual lattice strain and coherent “crystal” size are a function of shock parameters. An interesting observation on a sample of MnO2 concerns the recovery of cubic Mn2O3 (bixbyite) in the material subjected to 22 GPa, indicating a shock-induced chemical synthesis.

Type
IX. Stress and Strain Determination by Diffraction Methods, Peak Broadening Analysis
Information
Advances in X-Ray Analysis , Volume 36: Forty-First Annual Conference on Applications of X-ray Analysis, August 3-7, 1992 , 1992 , pp. 595 - 601
Copyright
Copyright © International Centre for Diffraction Data 1992

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References

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