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Nonstoichiometry and Point Defect Structure of Olivines, (FexMg1-x)2SiO4

Published online by Cambridge University Press:  16 February 2011

Tse-Lun Tsai  and
R. Dieckmann
Tse-Lun Tsai
Affiliation:
Cornell University, Department of Materials Science and Engineering, Ithaca, NY 14853
R. Dieckmann
Affiliation:
Cornell University, Department of Materials Science and Engineering, Ithaca, NY 14853
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Abstract

A thermogravimetric study was conducted on synthetic olivines (FexMg1-x)2SiO4' prepared either by a conventional ceramic methodor a sol-gel method, to determine the nonstoichiometry and the point defect structure. Measurements were carried out as a function of oxygen activity and cationic composition at elevated temperatures. To avoid the dissolution of transition metal components of the silicate into noble metal containers, commonly used in previous investigations, quartz containers were used. The analysis of the point defect structure of olivines based on the new experimental results is presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 369: Symposium U – Solid State Ionics IV , 1994 , 313
Copyright
Copyright © Materials Research Society 1995

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References

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