Preparation of tetragonal barium titanate nanopowders by microwave solid-state synthesis

Tetragonal-phase BaTiO 3 powders of particle size 370 nm were synthesized by microwave sintering at 850 °C. The raw materials were BaCO 3 , TiO 2 , and alanine. SiC microspheres were used as microwave conductors. The effects of the holding time, sintering aids, and SiC addition on the preparation of...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2020-04, Vol.126 (4), Article 294
Main Authors: Qian, Haoyu, Zhu, Guisheng, Xu, Huarui, Zhang, Xiuyun, Zhao, Yunyun, Yan, Dongliang, Hong, Xianyong, Han, Yin, Fu, Zhenxiao, Ta, Shiwo, Yu, Aibing
Format: Article
Language:English
Subjects:
Alanine
Applied physics
Barium titanates
Characterization and Evaluation of Materials
Condensed Matter Physics
Conductors
Machines
Manufacturing
Materials science
Microspheres
Microwave sintering
Nanotechnology
Nucleation
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Raw materials
Silicon carbide
Sintering aids
Solid state
Surfaces and Interfaces
Synthesis
Thin Films
Titanium dioxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Tetragonal-phase BaTiO 3 powders of particle size 370 nm were synthesized by microwave sintering at 850 °C. The raw materials were BaCO 3 , TiO 2 , and alanine. SiC microspheres were used as microwave conductors. The effects of the holding time, sintering aids, and SiC addition on the preparation of BaTiO 3 were investigated. The results indicate that the addition of SiC as a microwave acceptor leads to formation of microwave micro-regions. This enables uniform heating of the raw materials and decreases the calcination temperature needed to obtain BaTiO 3 . Alanine coordinates with Ba, and this loosens the metal–CO 3 bond and promotes separation of CO 2 , decreases the BaCO 3 decomposition temperature, and provides a higher nucleation site density. It gives an idea about the microwave solid-state synthesis of BaTiO 3 powder.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-020-03472-y