The structures of inversion domain boundaries in AIN ceramics

Yanfa Yan, Masami Terauchi, Michiyoshi Tanaka

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9 Citations (Scopus)

Abstract

The structures of inversion domain boundaries in sintered AIN ceramics were studied by convergent-beam electron diffraction and high-resolution electron microscopy. The displacement vectors at a flat and a curved inversion domain boundary were determined to be RF= (0.11 ±0.02)(0001)+ɛFwhere ɛF= (0.02± 0.05)(ll00) and Rc= (0.17 ± 0.02)(0001) + ɛcwhere ɛC= (0.03 ± 0.01)(1100) respectively. An interfacial model was derived for the flat inversion domain boundary. The model contains a single Al-O(N) octahedron layer at the interface and has a stacking sequence of …cAaC-cAb- BaAb…, where -cAb- indicates the single A1-O(N) octahedron layer. A highresolution electron microscopy study supported the present model.

Original languageEnglish
Pages (from-to)1005-1022
Number of pages18
JournalPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Volume75
Issue number4
DOIs
Publication statusPublished - 1997 Apr

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)
  • Metals and Alloys

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