Premium
Characterization of Solid‐State Reaction of Barium Carbonate and Titanium Dioxide by Spatially Resolved Electron Energy Loss Spectroscopy
Author(s) -
Matsumoto Hiroaki,
Kakibayashi Hiroshi,
Taniguchi Yoshihumi,
Cheng IKuan,
Lee TingTai,
Hu ChingLi,
Lee ChunTe,
Fujimoto Masayuki
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12381
Subject(s) - materials science , rutile , electron energy loss spectroscopy , barium titanate , crystallinity , calcination , analytical chemistry (journal) , titanium dioxide , titanate , spectroscopy , titanium , mineralogy , barium , chemical engineering , transmission electron microscopy , ceramic , nanotechnology , chemistry , metallurgy , composite material , biochemistry , physics , chromatography , quantum mechanics , engineering , catalysis
A mixture of ultrafine submicrometer‐sized BaCO 3 powder and TiO 2 (rutile) powder was calcined in air at 700°C, 800°C, and 900°C, and then quenched to liquid nitrogen temperature in each case. The cross‐sectional quenched specimens were characterized by spatially resolved electron energy‐loss spectroscopy ( SR ‐ EELS ). The energy‐loss near‐edge structures ( ELNES ) were sequentially extracted at 1.3 to 5.3 nm in width from SR ‐ EELS image obtained from the rectangularly cut SR ‐ EELS slit aperture put on the synthesized BaTiO 3 layer and TiO 2 rutile powder. The ELNES of Ti‐L 2,3 edges and Ba‐M 4,5 edges clearly show fine structure changes from the surface of BaTiO 3 layer to the TiO 2 bulk region reflected from crystallinity of synthesized BaTiO 3 , lattice distortion of TiO 2 caused by Ba diffusion, and lattice misfit between BaTiO 3 and TiO 2 without formation of Ba 2 TiO 4 and other titanate phases.