Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route
Polycrystalline samples with the chemical formula CaCu3 Ti 4 - x Zrx O12 (x = 0, 0.02, 0.1, 0.2, 0.5, and 0.1) CCTZO were synthesized from metal nitrate solutions by the sol-gel method, followed by conventional and microwave heat treatments. The X-ray diffraction pattern of powder calcined at 800°C...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Hindawi Publishing Corporation
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/52177/1/52177.pdf |
| _version_ | 1825930674449678336 |
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| author | Jesurani, Sinnappan Kanagesan, Samikannu Hashim, Mansor Ismail, Ismayadi Ibrahim, Idza Riati |
| author_facet | Jesurani, Sinnappan Kanagesan, Samikannu Hashim, Mansor Ismail, Ismayadi Ibrahim, Idza Riati |
| author_sort | Jesurani, Sinnappan |
| collection | UPM |
| description | Polycrystalline samples with the chemical formula CaCu3 Ti 4 - x Zrx O12 (x = 0, 0.02, 0.1, 0.2, 0.5, and 0.1) CCTZO were synthesized from metal nitrate solutions by the sol-gel method, followed by conventional and microwave heat treatments. The X-ray diffraction pattern of powder calcined at 800°C in conventional furnace for 3 h showed formation of a single phase. The crystal structure did not change on doping with zirconium and it remained cubic in the five studied compositions. The surface morphology of samples sintered at 1000°C in microwave furnace for 10 min was observed using a high resolution scanning electron microscope (HR-SEM). The grain sizes were in the range of 250 nm-5 m for these samples. HRSEM results show that doping with Zr enhanced grain growth or densification. Energy dispersive X-ray spectroscopy (EDX) confirmed the presence of Zr. The dielectric characteristics of Zr doped CCTO were studied with an LCR meter in the frequency range of 50 Hz-1 MHz. A very high dielectric constant 21,500 was observed for the sample doped with Zr (0.02 mol%) at 50 Hz. |
| first_indexed | 2024-03-06T09:15:08Z |
| format | Article |
| id | upm.eprints-52177 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:15:08Z |
| publishDate | 2014 |
| publisher | Hindawi Publishing Corporation |
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| spelling | upm.eprints-521772017-06-05T04:23:39Z http://psasir.upm.edu.my/id/eprint/52177/ Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route Jesurani, Sinnappan Kanagesan, Samikannu Hashim, Mansor Ismail, Ismayadi Ibrahim, Idza Riati Polycrystalline samples with the chemical formula CaCu3 Ti 4 - x Zrx O12 (x = 0, 0.02, 0.1, 0.2, 0.5, and 0.1) CCTZO were synthesized from metal nitrate solutions by the sol-gel method, followed by conventional and microwave heat treatments. The X-ray diffraction pattern of powder calcined at 800°C in conventional furnace for 3 h showed formation of a single phase. The crystal structure did not change on doping with zirconium and it remained cubic in the five studied compositions. The surface morphology of samples sintered at 1000°C in microwave furnace for 10 min was observed using a high resolution scanning electron microscope (HR-SEM). The grain sizes were in the range of 250 nm-5 m for these samples. HRSEM results show that doping with Zr enhanced grain growth or densification. Energy dispersive X-ray spectroscopy (EDX) confirmed the presence of Zr. The dielectric characteristics of Zr doped CCTO were studied with an LCR meter in the frequency range of 50 Hz-1 MHz. A very high dielectric constant 21,500 was observed for the sample doped with Zr (0.02 mol%) at 50 Hz. Hindawi Publishing Corporation 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/52177/1/52177.pdf Jesurani, Sinnappan and Kanagesan, Samikannu and Hashim, Mansor and Ismail, Ismayadi and Ibrahim, Idza Riati (2014) Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route. Advances in Materials Science and Engineering, 2014. art. no. 187420. pp. 1-6. ISSN 1687-8434; ESSN: 1687-8442 https://www.hindawi.com/journals/amse/2014/187420/abs/ 10.1155/2014/187420 |
| spellingShingle | Jesurani, Sinnappan Kanagesan, Samikannu Hashim, Mansor Ismail, Ismayadi Ibrahim, Idza Riati Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route |
| title | Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route |
| title_full | Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route |
| title_fullStr | Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route |
| title_full_unstemmed | Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route |
| title_short | Microstructural and dielectric properties of Zr doped microwave sintered CaCu3Ti4O12 synthesized by sol-gel route |
| title_sort | microstructural and dielectric properties of zr doped microwave sintered cacu3ti4o12 synthesized by sol gel route |
| url | http://psasir.upm.edu.my/id/eprint/52177/1/52177.pdf |
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