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Physico-chemical and electrical properties of bismuth chromate solid solutions

Bismuth chromium solid solutions, with a general formula Bi6-xCr2Oδ, where -1 ≤ x ≤ 2, were successfully synthesized via the conventional solid state method. The phases of the synthesized samples were determined by X-ray diffraction (XRD) analysis. The properties of single-phase compounds were chara...

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Main Authors: Wong, Y. C., Tan, Yen Ping
Format: Article
Language:English
Published: Universiti Putra Malaysia Press 2013
Online Access:http://psasir.upm.edu.my/id/eprint/40491/1/29.%20Physico-Chemical%20and%20Electrical%20Properties%20of%20Bismuth%20Chromate.pdf
http://psasir.upm.edu.my/id/eprint/40491/
http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JST%20Vol.%2021%20%281%29%20Jan.%202013/08.%20%20Page%2097-110.pdf
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spelling my.upm.eprints.404912015-11-04T06:48:43Z http://psasir.upm.edu.my/id/eprint/40491/ Physico-chemical and electrical properties of bismuth chromate solid solutions Wong, Y. C. Tan, Yen Ping Bismuth chromium solid solutions, with a general formula Bi6-xCr2Oδ, where -1 ≤ x ≤ 2, were successfully synthesized via the conventional solid state method. The phases of the synthesized samples were determined by X-ray diffraction (XRD) analysis. The properties of single-phase compounds were characterized by using differential thermal analysis (DTA), thermal gravimetric analysis (TGA), AC impedance spectroscopy, and inductively coupled plasma-atomic emission spectroscopy (ICP-AES). The occurrence of phase transitions was confirmed by DTA and TGA, where a thermal event was observed by DTA at around 800°C. In addition, TGA studies also showed that there was a weight loss at around 800°C. Elemental analysis of Bi6Cr2O15and its solid solutions by ICP-AES showed a good agreement between the expected value and the experimental value on the compositions, with no evidence of any systematic deviation from stoichiometric. Electrical properties of Bi6Cr2O15and its solid solutions were investigated by using AC impedance spectroscopy from 300°C to 650°C. Ionic conductivity increased with the increasing temperature and bismuth content, and the best ionic conductivity was observed for Bi7Cr2O16.5. The activation energy (Ea) of Bi6Cr2O15and its solid solutions were in the range of 1.22-1.32 eV. Universiti Putra Malaysia Press 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/40491/1/29.%20Physico-Chemical%20and%20Electrical%20Properties%20of%20Bismuth%20Chromate.pdf Wong, Y. C. and Tan, Yen Ping (2013) Physico-chemical and electrical properties of bismuth chromate solid solutions. Pertanika Journal of Science & Technology, 21 (1). pp. 97-110. ISSN 0128-7680; ESSN: 2231-8526 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JST%20Vol.%2021%20%281%29%20Jan.%202013/08.%20%20Page%2097-110.pdf
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 Bismuth chromium solid solutions, with a general formula Bi6-xCr2Oδ, where -1 ≤ x ≤ 2, were successfully synthesized via the conventional solid state method. The phases of the synthesized samples were determined by X-ray diffraction (XRD) analysis. The properties of single-phase compounds were characterized by using differential thermal analysis (DTA), thermal gravimetric analysis (TGA), AC impedance spectroscopy, and inductively coupled plasma-atomic emission spectroscopy (ICP-AES). The occurrence of phase transitions was confirmed by DTA and TGA, where a thermal event was observed by DTA at around 800°C. In addition, TGA studies also showed that there was a weight loss at around 800°C. Elemental analysis of Bi6Cr2O15and its solid solutions by ICP-AES showed a good agreement between the expected value and the experimental value on the compositions, with no evidence of any systematic deviation from stoichiometric. Electrical properties of Bi6Cr2O15and its solid solutions were investigated by using AC impedance spectroscopy from 300°C to 650°C. Ionic conductivity increased with the increasing temperature and bismuth content, and the best ionic conductivity was observed for Bi7Cr2O16.5. The activation energy (Ea) of Bi6Cr2O15and its solid solutions were in the range of 1.22-1.32 eV.
format Article
author Wong, Y. C.
Tan, Yen Ping
spellingShingle Wong, Y. C.
Tan, Yen Ping
Physico-chemical and electrical properties of bismuth chromate solid solutions
author_facet Wong, Y. C.
Tan, Yen Ping
author_sort Wong, Y. C.
title Physico-chemical and electrical properties of bismuth chromate solid solutions
title_short Physico-chemical and electrical properties of bismuth chromate solid solutions
title_full Physico-chemical and electrical properties of bismuth chromate solid solutions
title_fullStr Physico-chemical and electrical properties of bismuth chromate solid solutions
title_full_unstemmed Physico-chemical and electrical properties of bismuth chromate solid solutions
title_sort physico-chemical and electrical properties of bismuth chromate solid solutions
publisher Universiti Putra Malaysia Press
publishDate 2013
url http://psasir.upm.edu.my/id/eprint/40491/1/29.%20Physico-Chemical%20and%20Electrical%20Properties%20of%20Bismuth%20Chromate.pdf
http://psasir.upm.edu.my/id/eprint/40491/
http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JST%20Vol.%2021%20%281%29%20Jan.%202013/08.%20%20Page%2097-110.pdf
_version_ 1643832731615887360
score 13.211869

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