Effect of temperature and time on solvothermal synthesis of tetragonal BaTiO3

被引：23

作者：

Habib, Amir ^{[1
,2
]}

Stelzer, Nils ^{[2
]}

Angerer, Paul ^{[3
]}

Haubner, Roland ^{[4
]}

机构：

[1] Natl Univ Sci & Technol, Sch Chem & Mat Engn, Islamabad, Pakistan

[2] Austrian Inst Technol GmbH, Adv Mat & Aerosp Technol, A-2444 Seibersdorf, Austria

[3] Ctr Electrochem Surface Technol, A-2700 Wiener Neustadt, Austria

[4] Vienna Univ Technol, A-1060 Vienna, Austria

来源：

BULLETIN OF MATERIALS SCIENCE | 2011年 / 34卷 / 01期

关键词：

Powders-chemical preparation; X-ray methods; electron microscopy; BaTiO3; tetragonal phase; BARIUM-TITANATE POWDER; HYDROTHERMAL SYNTHESIS; PARTICLE-SIZE; DIELECTRIC-PROPERTIES; CRYSTAL-STRUCTURE; GRAIN-SIZE; PERMITTIVITY;

D O I：

10.1007/s12034-011-0043-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tetragonal BaTiO3 nanoparticles are synthesized via solvothermal route in an ethanol water mixture. Ba(OH)(2)center dot 8H(2)O is used as Ba precursor and TiO2 (P25 Degussa similar to 25 nm, 30% anatase, 70% rutile) is used as Ti precursor in the Ba : Ti molar ratio 2 : 1. Effect of temperature and time study on solvothermal synthesis of BaTiO3 revealed that a moderate reaction temperature i.e. 185 degrees C and longer reaction time favour tetragonal phase stabilization. Dissolution-precipitation appears to be the transformation mechanism for the crystallization of BaTiO3 from particulate TiO2 precursor.

引用

页码：19 / 23

页数：5

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