The effect of pH control on synthesis of Sr doped barium titanate nanopowder by oxalate precipitation method

Jae Eun Jeon; Hyuk Su Han; Kyeong Ryeol Park; Yu Rim Hong; Kwang Bo Shim; Sungwook Mhin

doi:10.1016/j.ceramint.2017.09.231

The effect of pH control on synthesis of Sr doped barium titanate nanopowder by oxalate precipitation method

Jae Eun Jeon, Hyuk Su Han, Kyeong Ryeol Park, Yu Rim Hong, Kwang Bo Shim, Sungwook Mhin

Department of Energy and Materials Engineering

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Sr substituted BaTiO₃ (BST) nanopowders were prepared using oxalate co-precipitation methods. During synthesis, oxygen was applied to the oxalate solution in order to control the oxidation states of Ti. Control of pH in the solution results in different crystalline phases of the powders after calcination; pure perovskite BST was obtained in the powder prepared at pH 3 solution, while perovskite BaTiO₃ (BTO) and impurities were observed in powders prepared at pH 1 solution. Phase transformation from amorphous to crystalline BST during heat treatment was discussed by different analysis technique. Also, morphology and elemental distribution of the pure BST was investigated.

Original language	English
Pages (from-to)	1420-1424
Number of pages	5
Journal	Ceramics International
Volume	44
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2017.09.231
State	Published - 1 Feb 2018

Keywords

Nanopowder
Oxalate precipitation
Positive temperature coefficient
Sr-doped barium titanate

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10.1016/j.ceramint.2017.09.231

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title = "The effect of pH control on synthesis of Sr doped barium titanate nanopowder by oxalate precipitation method",

abstract = "Sr substituted BaTiO3 (BST) nanopowders were prepared using oxalate co-precipitation methods. During synthesis, oxygen was applied to the oxalate solution in order to control the oxidation states of Ti. Control of pH in the solution results in different crystalline phases of the powders after calcination; pure perovskite BST was obtained in the powder prepared at pH 3 solution, while perovskite BaTiO3 (BTO) and impurities were observed in powders prepared at pH 1 solution. Phase transformation from amorphous to crystalline BST during heat treatment was discussed by different analysis technique. Also, morphology and elemental distribution of the pure BST was investigated.",

keywords = "Nanopowder, Oxalate precipitation, Positive temperature coefficient, Sr-doped barium titanate",

author = "{Eun Jeon}, Jae and Han, {Hyuk Su} and {Ryeol Park}, Kyeong and Hong, {Yu Rim} and {Bo Shim}, Kwang and Sungwook Mhin",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd and Techna Group S.r.l.",

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TY - JOUR

T1 - The effect of pH control on synthesis of Sr doped barium titanate nanopowder by oxalate precipitation method

AU - Eun Jeon, Jae

AU - Han, Hyuk Su

AU - Ryeol Park, Kyeong

AU - Hong, Yu Rim

AU - Bo Shim, Kwang

AU - Mhin, Sungwook

PY - 2018/2/1

Y1 - 2018/2/1

N2 - Sr substituted BaTiO3 (BST) nanopowders were prepared using oxalate co-precipitation methods. During synthesis, oxygen was applied to the oxalate solution in order to control the oxidation states of Ti. Control of pH in the solution results in different crystalline phases of the powders after calcination; pure perovskite BST was obtained in the powder prepared at pH 3 solution, while perovskite BaTiO3 (BTO) and impurities were observed in powders prepared at pH 1 solution. Phase transformation from amorphous to crystalline BST during heat treatment was discussed by different analysis technique. Also, morphology and elemental distribution of the pure BST was investigated.

AB - Sr substituted BaTiO3 (BST) nanopowders were prepared using oxalate co-precipitation methods. During synthesis, oxygen was applied to the oxalate solution in order to control the oxidation states of Ti. Control of pH in the solution results in different crystalline phases of the powders after calcination; pure perovskite BST was obtained in the powder prepared at pH 3 solution, while perovskite BaTiO3 (BTO) and impurities were observed in powders prepared at pH 1 solution. Phase transformation from amorphous to crystalline BST during heat treatment was discussed by different analysis technique. Also, morphology and elemental distribution of the pure BST was investigated.

KW - Nanopowder

KW - Oxalate precipitation

KW - Positive temperature coefficient

KW - Sr-doped barium titanate

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DO - 10.1016/j.ceramint.2017.09.231

M3 - Article

AN - SCOPUS:85031825924

SN - 0272-8842

VL - 44

SP - 1420

EP - 1424

JO - Ceramics International

JF - Ceramics International

IS - 2

ER -

The effect of pH control on synthesis of Sr doped barium titanate nanopowder by oxalate precipitation method

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