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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 5: 891 - 896

DOI: https://doi.org/10.3724/SP.J.1077.2008.00891

Research Paper

Preparation and Microwave Absorption Properties of Ce-doped BaTiO3

  • LIU Yan-Kun ,
  • TIAN YAN ,
  • FENG Yu-Jie ,
  • WU Xiao-Wei ,
  • HAN Xia-Guang
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  • 1. Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, China; 2. Institute of Petrochemical of Heilongjiang Province, Harbin 150076, China

Received date: 2007-10-18

  Revised date: 2007-12-28

  Online published: 2008-09-20

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Abstract

Nano-particles of Ce-doped BaTiO3 were prepared by sol-gel method. The structure, micrograph and microwave absorption properties of the materials were characterized by using X-ray diffraction (XRD), Raman spectroscope, Scanning Electron Microscope (SEM) and vector network analyzer. The BaTiO3 powders doped with different Ce contents have the same crystalline tetragonal structure. With the increase of Ce content, the crystal sizes of the BaTiO3 powders decrease with lattice constants a enlarges and c decreases. Within the bandwidth of 2--18GHz, the reflection loss of 0.2% Ce-doped BaTiO3 powders is increased and reflection peak has blue shift compared with pure BaTiO3 powders. Reflection losses of 0.2% Ce-doped BaTiO3
powders are increased by 15dB and 30dB at 5.8GHz and 7GHz, respectively, and the bandwidth is widened two times. The above shows that Ce-doping can greatly improve the microwave absorption properties of the BaTiO3 powders.

Key words： Ce-doping; BaTiO3; microwave absorption properties

Cite this article

LIU Yan-Kun , TIAN YAN , FENG Yu-Jie , WU Xiao-Wei , HAN Xia-Guang . Preparation and Microwave Absorption Properties of Ce-doped BaTiO3[J]. Journal of Inorganic Materials, 2008 , 23(5) : 891 -896 . DOI: 10.3724/SP.J.1077.2008.00891

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