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Structural evolution of the amorphous solids produced by heating crystalline MgHPO4 · 3H2O

Published online by Cambridge University Press:  31 January 2011

B.C. Sales ,
B.C. Chakoumakos ,
L.A. Boatner  and
J.O. Ramey
B.C. Sales
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
B.C. Chakoumakos
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
L.A. Boatner
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
J.O. Ramey
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
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Abstract

The precise structural characteristics of the amorphous solids that are generated during the dehydration of crystalline MgHPO4 · 3H2O (newberyite) are reported. The results show that a dramatic change in the distribution of phosphate anions (i.e., chains of corner-linked PO4 tetrahedra) occurs during the process of dehydration and that anions up to 13 PO4 tetrahedra in length are formed. The distribution of phosphate anions formed at intermediate stages of the dehydration process was found to be in quantitative agreement with the theory of Parks and Van Wazer.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 7 , Issue 10 , October 1992 , pp. 2646 - 2649
Copyright
Copyright © Materials Research Society 1992

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References

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