Interfacial structure of disordered-ordered domain boundaries in lanthanum-doped barium magnesium niobate

Hwack Joo Lee, Hyun Min Park, Hyun Ryu, Jong Hoo Paik, Sahn Nahm, Jae Dong Byun

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Microstructural studies on the interfacial boundaries of disordered and 1:2 ordered domains in lanthanum-doped (Ba0.975La0.025)(Mg0.34Nb0.66)O 3 were performed using high-resolution transmission electron microscopy and synchrotron powder X-ray diffractometry. Disordered and 1:2 ordered domains both coexisted in a single grain. Each domain occupied its own region, and the interfaces were atomically sharp and coherent. The wavelength of the superlattice modulation in the 1:2 ordered domain was ∼0.71 nm. The transition from the 1:2 ordered region to the disordered one could be differentiated at the interface by using the superlattice modulations in the 1:2 ordered domain. From these observations, a deducible interfacial model also was presented.

Original languageEnglish
Pages (from-to)3337-3340
Number of pages4
JournalJournal of the American Ceramic Society
Volume81
Issue number12
DOIs
Publication statusPublished - 1998 Dec

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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