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Synthesis of Ba2Ti9O20 via ethylenediaminetetraacetic acid precursor

Published online by Cambridge University Press:  31 January 2011

Yebin Xu ,
Yanyan He  and
Liangbin Wang
Yebin Xu
Affiliation:
The State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
Yanyan He
Affiliation:
The State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People's Republic of China
Liangbin Wang
Affiliation:
Structure Research Laboratory, University of Science and Technology, Hefei, Anhui, 230026, People's Republic of China
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Abstract

The modified Pechini method using ethylenediaminetetraacetic acid as a chelating agent to prepare Ba2Ti9O20 is reported. The resin precursors were prepared and heated at 700 to 1200 °C in air, and x-ray diffraction was used to determine the phase transformations as a function of temperature. Single-phase Ba2Ti9O20 was obtained at 1200 °C for 2–6 h, without the need of prolonged heat treatment time. The process was simple and easy to control: low-temperature conditions or a protective atmosphere was not needed. Differential thermal analysis, thermogravimetric analysis, and Raman spectroscopy were used to characterize the precursors and derived oxide powders. Details of the synthesis and characterization of the resultant products were given.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 4 , April 2001 , pp. 1195 - 1199
Copyright
Copyright © Materials Research Society 2001

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