Analysis of Composite Structures on Barium Titanate Fine Particles Using Synchrotron Radiation

Takuya Hoshina; Hirofumi Kakemoto; Takaaki Tsurumi; Satoshi Wada; Masatomo Yashima; Kenichi Kato; Masaki Takata

doi:10.4028/www.scientific.net/KEM.301.239

Paper Titles

Crystallization of Spherical Dielectric Oxide Particles in a Melting-Spheroidization Process Using Chemical Flame
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Self-Assembly of Perovskite Nanosheet Colloid at Room Temperature
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Synthesis of Nitride Compounds Using Fluidized Bed
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Synthesis of (Ba,Ca)(Zr,Ti)O₃ Ceramics from Ultra-Fine Precursors
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Analysis of Composite Structures on Barium Titanate Fine Particles Using Synchrotron Radiation
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Micropatterning of Monodisperse Spherical Particles by Electrophoretic Deposition Process Using Interdigitated Microarray Electrode
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Barium Titanate Micropatterns Prepared by Electron Beam Lithography and Electrophoretic Deposition
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Dielectric Measurement of BaTiO₃ Powder and Its Statistical Analysis
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Diffusion Behavior at the Interface of (Ba,Sr)TiO₃(BST)/Electrode/Buffer Layer/Si Epitaxial Multi-Layer Thin Film
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Analysis of Composite Structures on Barium Titanate Fine Particles Using Synchrotron Radiation

Abstract:

The crystal structures of barium titanate (BaTiO3) fine particles with a size around 140 nm were investigated using a synchrotron radiation X-ray diffraction method. The observed diffraction pattern was analyzed by Rietveld method assuming several models. As a result, it is found that the BaTiO3 fine particles have composite structures include (a) a tetragonal region with a constant c/a ratio, (b) a tetragonal region with gradient c/a ratios and (c) a cubic region. In order to estimate these structures, the partial profile relaxation technique was applied in the Rietveld refinement. It is considered that the composite structure is important for the size effect on BaTiO3 fine particles.