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:10.4028/0-87849-982-2.239

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

SRIS - SR Core Research Division

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13 Citations (Scopus)

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.

Original language	English
Pages (from-to)	239-242
Number of pages	4
Journal	Key Engineering Materials
Volume	301
DOIs	https://doi.org/10.4028/0-87849-982-2.239
Publication status	Published - 2006

Keywords

Barium Titanate
Nanoparticle
Partial Profile Relaxation Technique
Rietveld method
Size Effect
Surface relaxation model
Synchrotron Radiation XRD

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10.4028/0-87849-982-2.239

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title = "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.",

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T1 - Analysis of Composite Structures on Barium Titanate Fine Particles using Synchrotron Radiation

AU - Hoshina, Takuya

AU - Kakemoto, Hirofumi

AU - Tsurumi, Takaaki

AU - Wada, Satoshi

AU - Yashima, Masatomo

AU - Kato, Kenichi

AU - Takata, Masaki

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

KW - Barium Titanate

KW - Nanoparticle

KW - Partial Profile Relaxation Technique

KW - Rietveld method

KW - Size Effect

KW - Surface relaxation model

KW - Synchrotron Radiation XRD

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JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

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

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Keywords

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