Preparation of BaZrO3 Nanocrystals at Low Temperature

Kouichi Nakashima; Ichiro Fujii; Satoshi Wada

doi:10.4028/www.scientific.net/KEM.582.165

Paper Titles

Structure and Properties of Thin Films Consisting of Single Crystalline BaTiO₃ Nanocubes
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Crystal Structures and Surface Morphologies of LaGaO₃-Based Epitaxial Thin Films Grown by a Pulse Laser Deposition Method
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Characterization of Cu₂O Thin Film Grown by Molecular Beam Epitaxy
p.157

Temperature Dependence of Resistivity of MoSi₂-Si Composite Thin Films
p.161

Preparation of BaZrO₃ Nanocrystals at Low Temperature
p.165

Preparation of Barium Titanate/Strontium Titanate Nanocube Accumulation Ceramics and their Dielectric Property
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Improvement of the Stability of X-Ray Emission by Thermal Excitation of a Pyroelectric Single Crystal
p.174

Analysis of Grain-Boundary in SrCoO_3–Doped ZnO Varistors and its Electrical Characteristics
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TEM Study for Self-Orientated LaNiO₃ Film along [100]
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 582Preparation of BaZrO3 Nanocrystals at Low...

Preparation of BaZrO₃ Nanocrystals at Low Temperature

Abstract:

Barium zirconate (BaZrO₃) was prepared by the composite-hydroxide-mediated (CHM) approach at low temperature. The CHM method is based on chemical reactions of materials in the eutectic hydroxide melt. In this method, the eutectic point at an sodium hydroxide (NaOH) : potassium hydroxide (KOH) molar ratio of 51.5 : 48.5 is about 165°C. In the present work, the low-temperature preparation and morphology of BaZrO₃ nanocrystals were investigated. Zirconium tetra-n-butoxide ((CH₃CH₂CH₂CH₂O)₄Zr) and/or zirconium dioxide (ZrO₂) were used as a zirconium source. X-ray diffraction measurements confirmed that the BaZrO₃ had a perovskite structure. Barium hydroxide (Ba (OH)₂) was used as a barium source. BaZrO₃ nanoparticles were obtained when (CH₃CH₂CH₂CH₂O)₄Zr was used as a raw material. On the other hand, BaZrO₃ nanocubes were formed when ZrO₂ was used as a raw material. Scanning electron microscopy and transmission electron microscopy observations indicated that BaZrO₃ nanocrystals were formed.

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Key Engineering Materials (Volume 582)

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165-168

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https://doi.org/10.4028/www.scientific.net/KEM.582.165

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September 2013

Authors:

Kouichi Nakashima, Ichiro Fujii, Satoshi Wada

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BaZrO₃, CHM Approach, Nanocrystal, Nanocube, Perovskite Oxide

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