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New Routes To Nitrides: Synthesis Of A Highly Colored Lithium Tantalum Oxynitride

Published online by Cambridge University Press:  10 February 2011

Joel D. Houmes  and
Hans-Conrad Zur Loye
Joel D. Houmes
Affiliation:
Department of Chemistry, Massachusetts Institute of Technology Cambridge, MA 02139
Hans-Conrad Zur Loye
Affiliation:
Department of Chemistry, Massachusetts Institute of Technology Cambridge, MA 02139
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Abstract

The synthesis of a new lithium tantalum oxynitride is described. The compound, LiTaO3-3xN2x was synthesized by reacting LiTaO3 with anhydrous ammonia at temperatures ranging from 773 K to 1173 K. Depending on the reaction temperature the sample color changes from white to tan (773 K) to bright orange (973 K) to red (1123 K). The color appears to be the result of a p-d transition consistent with a charge transfer from localized nitrogen states to a band of predominately metal character. Electrical and magnetic measurements indicate that the material is a diamagnetic insulator.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 410: Symposium S – Covalent Ceramics III-Science and Technology of Non-Oxides , 1995 , 141
Copyright
Copyright © Materials Research Society 1996

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References

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