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
收藏
页码：19 / 23
页数：5
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