Investigation of the Phase and Microstructural Transformation on BaTiO<sub>3</sub> Powder by Solid-State Reaction

doi:10.12442/j.issn.1002-185X.QH20190055

Home > Archive>Volume 49, Issue 2, 2020 >476-481. DOI:10.12442/j.issn.1002-185X.QH20190055

Investigation of the Phase and Microstructural Transformation on BaTiO3 Powder by Solid-State Reaction
DOI:
                        10.12442/j.issn.1002-185X.QH20190055
                    
Author:
                        HU Qiaoyu1HU Qiaoyu
Shenzhen Key Laboratory of the Third Generation Semi-conductor,the Department of Electrical and Electronic Engineering,Southern University of Science and Technology
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HUANG Hao1HUANG Hao
Shenzhen Key Laboratory of the Third Generation Semi-conductor,the Department of Electrical and Electronic Engineering,Southern University of Science and Technology
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WEN Jiaxin1WEN Jiaxin
Shenzhen Key Laboratory of the Third Generation Semi-conductor,the Department of Electrical and Electronic Engineering,Southern University of Science and Technology
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ZHANG Lei2ZHANG Lei
Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology
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YU Hongyu1YU Hongyu
Shenzhen Key Laboratory of the Third Generation Semi-conductor,the Department of Electrical and Electronic Engineering,Southern University of Science and Technology
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Affiliation:1.Shenzhen Key Laboratory of the Third Generation Semi-conductor,the Department of Electrical and Electronic Engineering,Southern University of Science and Technology;2.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology
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Abstract:

As the miniaturization of multilayer ceramic capacitors (MLCCs) is a major trend, well-fabricated ferroelectric materials such as barium titanate (BaTiO₃, BTO) with small grain and well crystallinity are increasingly in demand. Compared with other synthetic routes, solid-state reaction (SSR) is a more feasible route to prepare BaTiO₃ nanoparticles without lattice imperfections. In contrast to other researches about SSR that mainly focus on exploring improved processes to obtain BaTiO₃ nanoparticles with high tetragonality, investigations on the phase, microstructural transformation and reaction mechanism of BaTiO₃ nanoparticles were made in this study. Experiments results reveal that the reaction mechanism of forming tetragonal BaTiO₃ via SSR can be ascribed to two main reaction stages, including the formation of cubic BaTiO₃ and the cubic-tetragonal transformation of BaTiO₃. Finally, BaTiO₃ powders with a tetragonality of 1.0086 (c/a) and average particle size of 180 nm was acquired after optimizing the calcination parameters.

Key words:Barium titanate; Solid state reaction; Phase transformation; Microstructure

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[HU Qiaoyu, HUANG Hao, WEN Jiaxin, ZHANG Lei, YU Hongyu. Investigation of the Phase and Microstructural Transformation on BaTiO₃ Powder by Solid-State Reaction[J]. Rare Metal Materials and Engineering,2020,49(2):476~481.]
DOI：10.12442/j. issn.1002-185X. QH20190055

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Received:April 09,2019
Revised:May 26,2019
Adopted:October 23,2019
Online: March 12,2020
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