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High Pressure Studies of Sm2+-Doped Sol-Gel Glasses

Published online by Cambridge University Press:  21 March 2011

Vilma C. Costa ,
Yongrong Shen ,
Kevin L. Bray  and
Ana M. M. Santos
Vilma C. Costa
Affiliation:
Department of Chemistry, Washington State University, Pullman, WA 99164
Yongrong Shen
Affiliation:
Department of Chemistry, Washington State University, Pullman, WA 99164
Kevin L. Bray
Affiliation:
Department of Chemistry, Washington State University, Pullman, WA 99164
Ana M. M. Santos
Affiliation:
Center of Nuclear Technology Development / CDTN, CP 941, Pampulha, Belo Horizonte, MG, Brazil, 30123-970
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Abstract

Glasses containing nominally 1, 2, 5, and 10 wt% Sm2O3 in Na2O-Al2O3-SiO2 and Al2O3-SiO2 were prepared from metal alkoxide solution using the sol-gel process. After low temperature heat treatment in air, the glasses were heated up to 800 °C under a flowing H2 atmosphere to reduce Sm3+ into Sm2+. Samarium ions in the divalent and trivalent states were identified by fluorescence measurements. The fluorescence properties of Sm2+ions are discussed in relation to concentration of Sm2O3 and the glass matrix composition. Preliminary results of pressure studies on the luminescence spectra and lifetime of Sm2+ in the glasses are presented as well.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 667: Symposium G – Luminescence and Luminescent Materials , 2001 , G2.5
Copyright
Copyright © Materials Research Society 2001

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References

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