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Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method

SrTiO3 sample has been successfully prepared by mechanical alloying (MA) method. The effect of milling time on microstructure, crystallite size and dielectric properties of SrTiO3 were studied. The results revealed that the mean crystallite size of milled powders decreased from 84.56 to 12.87 nm wit...

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Main Authors: Wong, Yick Jeng, Hassan, Jumiah, Hashim, Mansor, Wong, Swee Yin, Leow, Chun Yan
Format: Article
Language:English
Published: Trans Tech Publications 2012
Online Access:http://psasir.upm.edu.my/id/eprint/25139/1/Effect%20of%20milling%20time%20on%20microstructure.pdf
http://psasir.upm.edu.my/id/eprint/25139/
http://www.scientific.net/AMR.364.388
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spelling my.upm.eprints.251392015-12-02T01:48:24Z http://psasir.upm.edu.my/id/eprint/25139/ Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method Wong, Yick Jeng Hassan, Jumiah Hashim, Mansor Wong, Swee Yin Leow, Chun Yan SrTiO3 sample has been successfully prepared by mechanical alloying (MA) method. The effect of milling time on microstructure, crystallite size and dielectric properties of SrTiO3 were studied. The results revealed that the mean crystallite size of milled powders decreased from 84.56 to 12.87 nm with increasing milling time. However, the average lattice strain of milled powders increased from 0.2 to 0.93% with increasing milling time. A single phase SrTiO3 could not be formed with milling alone and required annealing process. A transformation of anatase-TiO2 to rutile-TiO2 was observed at 16 h of milling. After the milled powders were subjected to sintering process at 1200°C, formation of single-phase SrTiO3-type cubic (Pm-3m) perovskite structure was observed. The peak intensities of the sintered SrTiO3 samples decreased as the milling time was increased. For microstructural observations, the average grain size of the sintered SrTiO3 sample milled for 8 h showed the largest. For dielectric measurements, the dielectric constant of the sintered SrTiO3 sample milled for 8 h showed the highest among others. This could be due to the largest grain size obtained for sintered SrTiO3 sample milled for 8 h. The decrease in the grain size with increasing milling time resulted to the decrease in dielectric constant. Trans Tech Publications 2012 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25139/1/Effect%20of%20milling%20time%20on%20microstructure.pdf Wong, Yick Jeng and Hassan, Jumiah and Hashim, Mansor and Wong, Swee Yin and Leow, Chun Yan (2012) Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method. Advanced Materials Research, 364. pp. 388-392. ISSN 1022-6680; ESSN: 1662-8985 http://www.scientific.net/AMR.364.388 10.4028/www.scientific.net/AMR.364.388
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description SrTiO3 sample has been successfully prepared by mechanical alloying (MA) method. The effect of milling time on microstructure, crystallite size and dielectric properties of SrTiO3 were studied. The results revealed that the mean crystallite size of milled powders decreased from 84.56 to 12.87 nm with increasing milling time. However, the average lattice strain of milled powders increased from 0.2 to 0.93% with increasing milling time. A single phase SrTiO3 could not be formed with milling alone and required annealing process. A transformation of anatase-TiO2 to rutile-TiO2 was observed at 16 h of milling. After the milled powders were subjected to sintering process at 1200°C, formation of single-phase SrTiO3-type cubic (Pm-3m) perovskite structure was observed. The peak intensities of the sintered SrTiO3 samples decreased as the milling time was increased. For microstructural observations, the average grain size of the sintered SrTiO3 sample milled for 8 h showed the largest. For dielectric measurements, the dielectric constant of the sintered SrTiO3 sample milled for 8 h showed the highest among others. This could be due to the largest grain size obtained for sintered SrTiO3 sample milled for 8 h. The decrease in the grain size with increasing milling time resulted to the decrease in dielectric constant.
format Article
author Wong, Yick Jeng
Hassan, Jumiah
Hashim, Mansor
Wong, Swee Yin
Leow, Chun Yan
spellingShingle Wong, Yick Jeng
Hassan, Jumiah
Hashim, Mansor
Wong, Swee Yin
Leow, Chun Yan
Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method
author_facet Wong, Yick Jeng
Hassan, Jumiah
Hashim, Mansor
Wong, Swee Yin
Leow, Chun Yan
author_sort Wong, Yick Jeng
title Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method
title_short Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method
title_full Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method
title_fullStr Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method
title_full_unstemmed Effect of milling time on microstructure, crystallite size and dielectric properties of Srtio3 ceramic synthesized via mechanical alloying method
title_sort effect of milling time on microstructure, crystallite size and dielectric properties of srtio3 ceramic synthesized via mechanical alloying method
publisher Trans Tech Publications
publishDate 2012
url http://psasir.upm.edu.my/id/eprint/25139/1/Effect%20of%20milling%20time%20on%20microstructure.pdf
http://psasir.upm.edu.my/id/eprint/25139/
http://www.scientific.net/AMR.364.388
_version_ 1643828571720908800
score 13.211869

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