Investigation on microstructure and electrical properties of Bi doping Ca3Co4O9 nanoparticles synthesized by solgel process
In this study, nanoparticles of Bi doped Ca3-xCo4O9 [Ca3-xBixCo4O9 where x=0, 0.2, 0.4 and 0.6] were prepared by sol gel combustion method. The phase structures and microstructures of Bi doped Ca3-xCo4O9 powders preparation were investigated. The microstructural observations of different Bi doped Ca...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Science Publishing Corporation Inc
2018
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/79903/1/IzmanSudin2018_InvestigationonMicrostructureandElectricalProperties.pdf http://eprints.utm.my/id/eprint/79903/ http://dx.doi.org/10.14419/ijet.v7i2.29.13121 |
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| Summary: | In this study, nanoparticles of Bi doped Ca3-xCo4O9 [Ca3-xBixCo4O9 where x=0, 0.2, 0.4 and 0.6] were prepared by sol gel combustion method. The phase structures and microstructures of Bi doped Ca3-xCo4O9 powders preparation were investigated. The microstructural observations of different Bi doped Ca3-xCo4O9 powders were evaluated using X-ray diffraction analysis (XRD) and Variable Pressure Scanning Electron Microscope (VPSEM). The bulk Ca3-xBixCo4O9 samples were fabricated using uniaxial cold pressing technique. Electrical resistivity of bulk Ca3-xBixCo4O9 samples with different doping was measured using fourprobe method from 300 to 700°K. The electrical resistivity was found to decrease with increasing temperature for the bulk Ca3-xBixCo4O9 samples. The electrical properties of Ca3-xBixCo4O9 are non-monotonic functions of x. |
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