Thakur, Vikas N and Zafer, Afaqul and Yadav, Sanjay and Kumar, Ashok (2019) Ferroelectric-dielectric composite pressure sensor. Journal of Electronic Materials, 297 (111536). ISSN 0924-4247

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Abstract

The Polar Pb0.6Bi0.27(Zr0.52Ti0.48)O-3 (PBiZT) - nonpolar ZrO2 composite with average volume ratio 60:40 shows well saturated ferroelectric properties and large pressure sensitivity (0) over tilde .11 MPa-1 in the range of 25-200 MPa. Even in the presence of 40% centrosymmetric non-ferroelectric ZrO2, the composite provides large polarization and behaves like normal ferroelectrics. A well-saturated ferroelectric hysteresis with large polarization, low tangent loss, second-order ferroelectric phase transition near 350 degrees C (high temperature) and large relative change in capacitive reactance under various pressure are observed in the composite that supports its suitability as a pressure sensor. Impedance analysis and ac conductivity have been studied as a function of pressure and temperature to understand the microstructure-property relation. The composite indicates nearly 6% change in capacitive reactance as well in dielectric constant with varying pressure from 25 to 200 MPa. The theoretical analysis suggests that stress and deformation linearly follow the applied pressure. However, the energy density follows a nonlinear relation with pressure.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Journal of Electronic Materials.
Subjects:	Engineering > Electronics and Electrical Engineering Instruments/ Instrumentation
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	19 Aug 2026 11:44
Last Modified:	19 Aug 2026 11:44
URI:	https://npl.csircentral.net/id/eprint/4212

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