Synthesis and electrical characterization of Ca2Nd4Ti6O20 ceramics-Reference-Cited by-同舟云学术

Synthesis and electrical characterization of Ca2Nd4Ti6O20 ceramics

Published:2016-03-01 Issue:1 Volume:34 Page:164-168
ISSN:2083-134X
Container-title:Materials Science-Poland
language:en
Short-container-title:

Author:

Muhammad Raz¹²,Uzair Muhammad³,Javid Iqbal M.³,Jawad Khan M.³,Iqbal Yaseen³,Rambo Carlos R.²

Affiliation:

1. Department of Physics, Islamia College Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan

2. Laboratory of Electrical Materials, Federal University of Santa Catarina, Florianopolis, Brazil

3. Department of Physics, University of Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan

Abstract

Abstract Ca2Nd4Ti6O20, a layered perov skite structured material was synthesized via a chemical (citrate sol-gel) route for the first time using nitrates and alkoxide precursors. Phase analysis of a sample sintered at 1625 °C revealed the formation of an orthorhombic (Pbn21) symmetry. The microstructure of the sample after sintering comprised rod-shaped grains of a size of 1.5 to 6.5µm. The room temperature dielectric constant of the sintered sample was 38 at 100 kHz. The remnant polarization (Pr) and the coercive field (Ec) were about 400 μC/cm2 and 8.4 kV/cm, respectively. Impedance spectroscopy revealed that the capacitance (13.7 pF) and activation energy (1.39 eV) of the grain boundary was greater than the capacitance (5.7 pF) and activation energy (1.13 eV) of the grain.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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