Barium strontium titanate humidity sensor: impact of doping on the structural and electrical properties

Citation

Wagiran, Rahman and Farahani, Hamid and Yurchenko, Olena and Urban, Gerald A. (2018) Barium strontium titanate humidity sensor: impact of doping on the structural and electrical properties. Proceedings, 2 (13). art. no. 1007. pp. 1-5. ISSN 2504-3900

Abstract

The influence of Mg2+ doping (3 mol %) on structural and humidity sensing properties of (Ba0.5,Sr0.5)TiO3 (BST) perovskite nanocomposite were studied in details. Microstructural properties revealed the particle size, surface area, and average pore volume diminished for doped sample. For the MgO doped BST sensor, the film resistance and total impedance are changed more than four orders of magnitude in the 20–95% RH range, while BST sensor shows three orders change. The 3 mol % MgO doped sample with maximum hysteresis of 6.1 RH% and response/recovery time of about 30/80 s exhibits faster characteristics compare to pure BST sample with 6.8 RH% hysteresis and response/recovery of 41 s and 98 s, respectively. Transduction mechanism was found based on the proton transfer and further confirmed by a Bode plot and Nyquist complex impedance plane plot.

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Official URL or Download Paper: https://www.mdpi.com/2504-3900/2/13/1007

Additional Metadata

Item Type:	Article
Divisions:	Faculty of Engineering
DOI Number:	https://doi.org/10.3390/proceedings2131007
Publisher:	Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:	Humidity sensor; Perovskite nanocomposite; MgO; Strontium titanate; Proton transfer
Depositing User:	Ms. Nuraida Ibrahim
Date Deposited:	30 Nov 2020 07:53
Last Modified:	30 Nov 2020 07:53
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/proceedings2131007
URI:	http://psasir.upm.edu.my/id/eprint/73256
Statistic Details:	View Download Statistic

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