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Determination Of Aluminum Coordination Environments In Amorphous AI2O3 By Solid State NmrSpectroscopy

Published online by Cambridge University Press:  15 February 2011

William S. Rees Jr  and
Lamy J. Chopin
William S. Rees Jr
Affiliation:
Department of Chemistry, Materials Research and Technology Center, and The National High Magnetic Field Laboratory, The Rorida State University, Tallahassee, FL 32306–3006
Lamy J. Chopin
Affiliation:
Department of Chemistry, Materials Research and Technology Center, and The National High Magnetic Field Laboratory, The Rorida State University, Tallahassee, FL 32306–3006
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Abstract

It previously has been difficult to probe the localized coordinationenvironment of aluminum atoms in amorphous alumina samples by solid stateNMR spectroscopy. Such an in situ technique has benefits inprobing the structure of the material and monitoring the evolution of themicrostructural development during thermal processing. The recentdevelopments of more sophisticated NMR techniques by Pines, et al., specifically devised for treatment of problems unique tothe solid state spectroscopy of quadrupolar nuclei, have permitted a glimpseinto these Materials. As a result of applying these experimental techniquesto new materials systems, a better understanding of the solid statestructure of amorphous aluminas derived from polymer pyrolysis has emerged.Correlations between the onset and completion of crystallization and thelocalized structure may now be possible.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 321: Symposium E – Crystallization and Related Phenomena in Amorphous Materials—Ceramics, Metals, Polymers, and Semiconductors , 1993 , 123
Copyright
Copyright © Materials Research Society 1994

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References

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