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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2074/1370
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| DC Field | Value | Language |
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| contributor.author | Roy, Somnath C | - |
| contributor.author | Bhatnagar, M C | - |
| contributor.author | Sharma, G L | - |
| contributor.author | Manchanda, R | - |
| contributor.author | Balakrishnan, V R | - |
| date.accessioned | 2006-02-22T03:43:22Z | - |
| date.available | 2006-02-22T03:43:22Z | - |
| date.issued | 2004 | - |
| identifier.citation | Ceramics International, 30(8), 2283-2287 | en |
| identifier.uri | http://eprint.iitd.ac.in/dspace/handle/2074/1370 | - |
| description.abstract | (Ba0.5Sr0.5)TiO3 thin films have been deposited by sol–gel technique and the effect of pre-sintering temperature on the structural and dielectric properties has been studied. The sol was prepared from barium acetate and strontium acetate powders by dissolving them in acetic acid; while titanium isopropoxide was used as titanium source. Acetyl acetone, 2-methoxyethanol, and formamide were used as chelating agent, diluting reagent, and for getting crack free films, respectively. Two sets of films were prepared; one set pre-sintered at 400 °C while the other one at 600 °C. In all the cases, the final sintering temperature was kept fixed at 700 °C for 2 h. These films were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), dielectric constant, and loss measurements and AC conductivity studies. It has been found that with an increase in the pre-sintering temperature from 400 to 600 °C, the dielectric constant increases from 225 to 383 (measured at 100 kHz); whereas, the loss tangent remains nearly constant at 0.03–0.05. The XRD results show better crystallinity and enhanced grain growth in case of films pre-sintered at 600 °C. The FTIR spectra reveals that there is significant removal of organic materials in films with higher pre-sintering temperature as compared to that with lower pre-sintering temperature. The AC conductivity studies show a decrease in the frequency exponent ‘s’ with an increase in the pre-sintering temperature which has been correlated with the reduction in oxygen vacancy densities in the sample with higher pre-sintering temperature. | en |
| format.extent | 567722 bytes | - |
| format.mimetype | application/pdf | - |
| language.iso | en | en |
| subject | Dielectric properties | en |
| subject | Sol–gel | en |
| subject | Barium strontium titanate | en |
| subject | AC conductivity | en |
| title | Effect of pre-sintering temperature on the structural and dielectric properties of (Ba0.5Sr0.5)TiO3 thin films deposited by sol–gel technique | en |
| type | Article | en |
| Appears in Collections: | Physics
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| royeff2004.pdf | | 554Kb | Adobe PDF | View/Open |
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