COMBINED X-RAY AND NEUTRON POWDER DIFFRACTION STUDY OF MAGNESIUM-DOPED LITHIUM-NIOBATE

J B THOMSON, C SMALL, P LIGHTFOOT, P G BRUCE

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5 Citations (Scopus)

Abstract

The nature of cation doping in the important optical material lithium niobate has been studied using a combination of X-ray and neutron powder diffraction methods. Samples of nominal composition Li1-xMgxNbO3 (x = 0.1, 0.2, 0.3) were studied. Magnesium was found to substitute exclusively at the Li site, with concommitant Li vacancies, and with no deviation from stoichiometry at the Nb position, i.e. [Li1-xMgx/2][Nb]O-3. This is the first detailed structural study of doped lithium niobate by diffraction methods and supports previous models obtained by local structural techniques and computational methods.

Original languageEnglish
Pages (from-to)1039-1041
Number of pages3
JournalJournal of Materials Chemistry
Volume5
Issue number7
Publication statusPublished - Jul 1995

Keywords

  • COMPUTER-SIMULATION
  • DEFECT STRUCTURE
  • LINBO3
  • SITES

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