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Preparation and characterization of Co3O4 films prepared via Pechini method*

Published online by Cambridge University Press:  12 June 2003

Y. J. Wei ,
Z. F. Huang ,
C. Wang ,
W. Liu  and
G. Chen
Y. J. Wei
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education, China and College of Materials Science and Engineering, Jilin University, Changchun 130023, PR China
Z. F. Huang
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education, China and College of Materials Science and Engineering, Jilin University, Changchun 130023, PR China
C. Wang
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education, China and College of Materials Science and Engineering, Jilin University, Changchun 130023, PR China
W. Liu
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education, China and College of Materials Science and Engineering, Jilin University, Changchun 130023, PR China
G. Chen*
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education, China and College of Materials Science and Engineering, Jilin University, Changchun 130023, PR China
*
mat@mail.jlu.edu.cn
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Abstract

Co3O4 thin films were prepared via the Pechini method using spin-coating and sintering processes. X-ray diffraction (XRD), atomic force microscopy (AFM), and Raman spectroscopy were employed to characterize the films. The XRD pattern from the prepared films can be indexed based on a spinel structure. Ordered crystalline columns and high quality surfaces are observed via the AFM images. It is found out that the grain size increases with the sintering temperature. Minimum roughness of the film can be obtained at PEG content 60 mg/ml. Raman spectroscopy confirms that the films are crystallized in the spinel structure. A red shift observed in all bands shows that the cohesive energy is lower in the film than in the bulk crystal.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 23 , Issue 2 , August 2003 , pp. 111 - 115
Copyright
© EDP Sciences, 2003

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Footnotes

*

Work sponsored by Chinese National Natural Science Foundation, under Grant # 50272023 and the Special Funds for Major State Basic research Project of China under Grant 2002CB211802.

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