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31P Dipolar NMR Approaches Towards the Development of Structural Principles in Non-Oxidic Glasses.

Published online by Cambridge University Press:  21 February 2011

Hellmut Eckert ,
Deanna Franke ,
David Lathrop ,
Robert Maxwell  and
Michael Tullius
Hellmut Eckert
Affiliation:
Department of Chemistry, University of California, Santa Barbara, Goleta, CA 93106.
Deanna Franke
Affiliation:
Department of Chemistry, University of California, Santa Barbara, Goleta, CA 93106.
David Lathrop
Affiliation:
Department of Chemistry, University of California, Santa Barbara, Goleta, CA 93106.
Robert Maxwell
Affiliation:
Department of Chemistry, University of California, Santa Barbara, Goleta, CA 93106.
Michael Tullius
Affiliation:
Department of Chemistry, University of California, Santa Barbara, Goleta, CA 93106.
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Abstract

While the utility of solid state NMR to provide structural information in amorphous systems is well established in silicate and borate glasses, the systematic application of modern NMR techniques to non-oxidic systems has just begun. One of the central issues in these types of glasses is the question of the chemical bond distribution and the existence of short range order. The present study utilizes the selective measurement of homonuclear 31p.31P dipole-dipole couplings via spin echo decay to address this issue in the glass systems P-Se, PSe- Ge and CdGeAs2-xPx. The results indicate that the first two systems are characterized by a high degree of chemical ordering. The chemical bond distribution in CdGeAs2-xPx glasses is found to deviate considerably from that in the stoichiometry-analog crystalline materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 172: Symposium P – Optical Fiber Materials and Processing , 1989 , 193
Copyright
Copyright © Materials Research Society 1990

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