Solubility and substitution of Fe2O3 in LiNbO3

Claudia J. Rawn, Dunbar P Birnie

Research output: Contribution to journalArticle

Abstract

Iron impurities play an important role in photorefractive optical damage in lithium niobate crystals. Yet, in spite of its importance, the plentiful studies of iron incorporation into the lattice still leave no quantitative model of the substitution site or the appropriate chemical incorporation reaction. X-ray powder diffraction studies have been used to examine the solid solution changes in the lattice constants. Both the a-lattice constant and volume were found to decrease with increasing Fe2O3 content while the c-lattice constant increased with increasing Fe2O3 content. These changes were associated specifically with an iron oxide solution mechanism where iron substitutes onto both lithium and niobium lattice sites. The defect chemical reactions used to describe this solid solution process are discussed.

Original languageEnglish
Pages (from-to)291-296
Number of pages6
JournalFerroelectrics
Volume153
Issue number1 -4 pt 3
Publication statusPublished - 1994

Fingerprint

Lattice constants
Substitution reactions
Iron
solubility
Solubility
substitutes
Chemical reactions
Solid solutions
Lithium
Niobium
iron
chemical reactions
Iron oxides
solid solutions
X ray powder diffraction
Impurities
Defects
Crystals
lithium niobates
iron oxides

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Engineering(all)

Cite this

Solubility and substitution of Fe2O3 in LiNbO3 . / Rawn, Claudia J.; Birnie, Dunbar P.

In: Ferroelectrics, Vol. 153, No. 1 -4 pt 3, 1994, p. 291-296.

Research output: Contribution to journalArticle

Rawn, CJ & Birnie, DP 1994, 'Solubility and substitution of Fe2O3 in LiNbO3 ', Ferroelectrics, vol. 153, no. 1 -4 pt 3, pp. 291-296.
Rawn, Claudia J. ; Birnie, Dunbar P. / Solubility and substitution of Fe2O3 in LiNbO3 . In: Ferroelectrics. 1994 ; Vol. 153, No. 1 -4 pt 3. pp. 291-296.
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