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Effect of Laser Irradiation on the PTCR Behavior of Semiconducting Barium Strontium Titanate Ceramics

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Abstract

This paper examines the effect of pulsed laser irradiation on the electrical properties of n-type semiconductor ferroelectric ceramics (based on a (Ba,Sr)TiO3 solid solution) with a planar contact configuration. The elemental compositions and surface morphologies of the material before and after laser irradiation are compared using scanning electron microscopy data. In the framework of the well-known Heywang model for the positive temperature coefficient of resistance effect, we calculate the resistance of the material as a function of temperature for the paraelectric phase and determine parameters of grain boundaries that ensure good agreement between the experimental data and theoretical curves.

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Correspondence to A. M. Solodukha.

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Original Russian Text © A.M. Solodukha, G.S. Grigoryan, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 3, pp. 327–331.

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Solodukha, A.M., Grigoryan, G.S. Effect of Laser Irradiation on the PTCR Behavior of Semiconducting Barium Strontium Titanate Ceramics. Inorg Mater 54, 301–304 (2018). https://doi.org/10.1134/S0020168518030147

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  • DOI: https://doi.org/10.1134/S0020168518030147

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