Kotnala, R. K. and Shah, Jyoti and Mathpal, M. C. and Gupta, Devinder and Purohit, L. P. and Kishan, Hari (2009) Study of Humidity Sensing Property of LiCe Substituted Magnesium Ferrite. Sensor Letters, 7 (6). pp. 1051-1056. ISSN 1546-198X

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Abstract

A drop in electrical resistance with relative humidity of LiCe substituted magnesium ferrite series has been investigated. The drop in resistance is 2 to 2.6 order of magnitude for the range 20-80% RH for different compositions. The LiCe substitution in magnesium ferrite decreased the grain size and the pore size distribution of magnesium ferrite increased as evident by SEM micrographs. The bulk porosity is increased with LiCe substitution calculated by linear intercept method. The adsorption humidity response time is within 180 s recorded for a step change of 40% RH for different samples. The humidity hysteresis curves are plotted for all the samples, an area enclosed is with in 1%-6% RH. In Raman spectra five characteristics spinel peaks along with small peaks observed for different compositions.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s American Scientific Publishers.
Subjects:	Chemistry Electrochemistry Instruments/ Instrumentation Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	05 Oct 2012 08:04
Last Modified:	05 Oct 2012 08:04
URI:	http://npl.csircentral.net/id/eprint/661

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