Article: Structural, thermal and dielectric properties of ferroelectric Pb1-xCaxTiO3 ceramics Journal: International Journal of Nanoparticles (IJNP) 2012 Vol.5 No.2 pp.149 - 158 Abstract: Perovskite (ABO3) type ferroelectric materials are most promising materials for multifunctional ferroelectric and other electronic devices. Lead titanate (PbTiO3) ferroelectric ceramic is one of them. It is a very good ferroelectric material but the drawback of this material is that it is highly brittle due to very high tetragonal distortion and hence creates problems during device fabrication. To remove this drawback different types of substitution on A and B-cation site makes this material suitable for different devices. We have prepared Ca-doped PbTiO3 of general formula Pb1-xCaxTiO3 with x = 0.00, 0.1 and 0.3. The polycrystalline ceramic samples of these materials have been prepared by standard solid state reaction method using high purity oxides and carbonates. The formation of compounds has been checked by X-ray diffraction followed by scanning electron microscopy (SEM) and particle size analysis. Phase transition in these compounds has been studied using dielectric and thermal analysis (DSC) technique. It has been observed that the phase transition temperature decreases with the increase of substitution concentration. The results are discussed in detail. Inderscience Publishers - linking academia, business and industry through research

Title: Structural, thermal and dielectric properties of ferroelectric Pb_1-xCa_xTiO₃ ceramics

Authors: Praniti Dave; Shiv Kumar Barbar; M. Roy

Addresses: Department of Physics, M.L. Sukhadia University, Udaipur-313002, Rajasthan, India. ' Department of Physics, M.L. Sukhadia University, Udaipur-313002, Rajasthan, India. ' Department of Physics, M.L. Sukhadia University, Udaipur-313002, Rajasthan, India

Abstract: Perovskite (ABO₃) type ferroelectric materials are most promising materials for multifunctional ferroelectric and other electronic devices. Lead titanate (PbTiO₃) ferroelectric ceramic is one of them. It is a very good ferroelectric material but the drawback of this material is that it is highly brittle due to very high tetragonal distortion and hence creates problems during device fabrication. To remove this drawback different types of substitution on A and B-cation site makes this material suitable for different devices. We have prepared Ca-doped PbTiO₃ of general formula Pb_1-xCa_xTiO₃ with x = 0.00, 0.1 and 0.3. The polycrystalline ceramic samples of these materials have been prepared by standard solid state reaction method using high purity oxides and carbonates. The formation of compounds has been checked by X-ray diffraction followed by scanning electron microscopy (SEM) and particle size analysis. Phase transition in these compounds has been studied using dielectric and thermal analysis (DSC) technique. It has been observed that the phase transition temperature decreases with the increase of substitution concentration. The results are discussed in detail.

Keywords: ceramics; X-ray diffraction; scanning electron microscopy; SEM; modulated differential scanning calorimetric; MDSC; structural properties; thermal properties; dielectric properties; ferroelectric materials; lead titanate.

DOI: 10.1504/IJNP.2012.046248

International Journal of Nanoparticles, 2012 Vol.5 No.2, pp.149 - 158

Received: 24 Jan 2011
Accepted: 03 Sep 2011
Published online: 20 Aug 2014 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article

Title: Structural, thermal and dielectric properties of ferroelectric Pb1-xCaxTiO3 ceramics

Keep up-to-date

Title: Structural, thermal and dielectric properties of ferroelectric Pb_1-xCa_xTiO₃ ceramics