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High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore.

Single phase non-stoichiometric bismuth zinc niobate, Bi3Zn1.84Nb3O13.84, was fabricated by a conventional solid state method. The sample was refined and fully indexed on the cubic system, space group Fd3m (No. 227), Z = 4 with a = 10.5579(4) �. Electrical characterisation was performed using an a...

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Main Authors: Tan, Kar Ban, Khaw, C. C., Lee, C. K., Zainal, Z., Tan, Y. P., Shaari, Hasnizam
Format: Article
Language:English
English
Published: Springer Publishing Company 2009
Online Access:http://psasir.upm.edu.my/id/eprint/15008/1/High%20temperature%20impedance%20spectroscopy%20study%20of%20non.pdf
http://psasir.upm.edu.my/id/eprint/15008/
http://www.materialsscience.pwr.wroc.pl/
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spelling my.upm.eprints.150082016-01-20T02:21:05Z http://psasir.upm.edu.my/id/eprint/15008/ High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore. Tan, Kar Ban Khaw, C. C. Lee, C. K. Zainal, Z. Tan, Y. P. Shaari, Hasnizam Single phase non-stoichiometric bismuth zinc niobate, Bi3Zn1.84Nb3O13.84, was fabricated by a conventional solid state method. The sample was refined and fully indexed on the cubic system, space group Fd3m (No. 227), Z = 4 with a = 10.5579(4) �. Electrical characterisation was performed using an ac impedance analyser over the temperature range of 25-850 �C and frequency range of 5 Hz-13 MHz. Typical dielectric response is observed in Bi3 Zn1.84Nb3O13.84 with a high relative permittivity, low dielectric loss and a negative temperature coefficient of capacitance, with the values of 147, 0.002 and -396 ppm/�C, at 100 kHz at ambient temperature, respectively. This material is highly resistive, with a conductivity of 1�10-21 O-1�cm-1 and a high activation energy of ca. 1.59 eV. Springer Publishing Company 2009 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/15008/1/High%20temperature%20impedance%20spectroscopy%20study%20of%20non.pdf Tan, Kar Ban and Khaw, C. C. and Lee, C. K. and Zainal, Z. and Tan, Y. P. and Shaari, Hasnizam (2009) High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore. Materials Science-Poland, 27 (3). pp. 825-837. ISSN 2083-1331; ESSN: 2083-134X http://www.materialsscience.pwr.wroc.pl/ English
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
English
description Single phase non-stoichiometric bismuth zinc niobate, Bi3Zn1.84Nb3O13.84, was fabricated by a conventional solid state method. The sample was refined and fully indexed on the cubic system, space group Fd3m (No. 227), Z = 4 with a = 10.5579(4) �. Electrical characterisation was performed using an ac impedance analyser over the temperature range of 25-850 �C and frequency range of 5 Hz-13 MHz. Typical dielectric response is observed in Bi3 Zn1.84Nb3O13.84 with a high relative permittivity, low dielectric loss and a negative temperature coefficient of capacitance, with the values of 147, 0.002 and -396 ppm/�C, at 100 kHz at ambient temperature, respectively. This material is highly resistive, with a conductivity of 1�10-21 O-1�cm-1 and a high activation energy of ca. 1.59 eV.
format Article
author Tan, Kar Ban
Khaw, C. C.
Lee, C. K.
Zainal, Z.
Tan, Y. P.
Shaari, Hasnizam
spellingShingle Tan, Kar Ban
Khaw, C. C.
Lee, C. K.
Zainal, Z.
Tan, Y. P.
Shaari, Hasnizam
High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore.
author_facet Tan, Kar Ban
Khaw, C. C.
Lee, C. K.
Zainal, Z.
Tan, Y. P.
Shaari, Hasnizam
author_sort Tan, Kar Ban
title High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore.
title_short High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore.
title_full High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore.
title_fullStr High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore.
title_full_unstemmed High temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore.
title_sort high temperature impedance spectroscopy study of non-stoichiometric bismuth zinc niobate pyrochlore.
publisher Springer Publishing Company
publishDate 2009
url http://psasir.upm.edu.my/id/eprint/15008/1/High%20temperature%20impedance%20spectroscopy%20study%20of%20non.pdf
http://psasir.upm.edu.my/id/eprint/15008/
http://www.materialsscience.pwr.wroc.pl/
_version_ 1643825804689276928
score 13.211869

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