Oxygen equilibrium and its detection in Bi2TeO5 crystals by Raman spectroscopy

I. Földvári, R. S. Klein, G. E. Kugel, A. Péter

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The 1/1 binary oxide of TeO2 and Bi2O3 exists in different oxidation forms. The composition stable at room temperature is Bi2TeO5, while at higher temperatures (600-700 °C) the fully oxidized form, Bi2TeO6, is stable. The single crystal of Bi2TeO5 shows interesting photorefractive properties. The oxidation state of the melt grown Bi2TeO5 crystal is a crucial question in controlling its physical parameters for applications. Specific Raman lines were shown to be sensitive to the oxidation/reduction history of the crystal. Especially, the intensity of the 762 cm-1 Raman line, in given orientation and polarization geometries, is recommended as a non-destructive test for the actual oxidation status of the Bi2TeO5 crystals.

Original languageEnglish
Pages (from-to)145-149
Number of pages5
JournalRadiation Effects and Defects in Solids
Volume151
Issue number1
Publication statusPublished - 1999

Fingerprint

Raman spectroscopy
Oxygen
Oxidation
Crystals
oxidation
oxygen
crystals
nondestructive tests
Oxides
Single crystals
Polarization
Temperature
Geometry
histories
Chemical analysis
oxides
single crystals
room temperature
polarization
geometry

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Radiation

Cite this

Oxygen equilibrium and its detection in Bi2TeO5 crystals by Raman spectroscopy. / Földvári, I.; Klein, R. S.; Kugel, G. E.; Péter, A.

In: Radiation Effects and Defects in Solids, Vol. 151, No. 1, 1999, p. 145-149.

Research output: Contribution to journalArticle

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