July 2014
Intermediate to advanced
552 pages
16h 9m
English
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Chapter 14
Synthesis, Characterization and Rietveld Studies of Sr-modified PZT Ceramics
Abstract
Presented in this chapter is a 6% Sr2+ substituted PZT ceramic composition with lead manganese antimony as an additional hardener dopant [Pb0.94Sr0.06] [(Mn1/3Sb2/3)0.05 (Zr0.495Ti0.505)0.95]O3, which is synthesized in perovskite phase by ceramic route. The precursor [Pb0.94Sr0.06]CO3 is prepared by coprecipitation method to ensure homogeneous distribution of Sr2+ ions at A-site, while the other columbite precursor MnSb2O6 is prepared by conventional solid-state reaction method to prevent the formation of the unwanted pyrochlore phase. The dielectric permittivity and the loss tangent of the sample are measured in a frequency range from 100 Hz to 1 MHz and in a temperature range from 303 K to 773 K. The frequency dependence of the loss peak is found to obey an Arrhenius law with activation energy of 0.09eV. An analysis of the loss factor with frequency is performed by using the scaling behavior of the dielectric loss spectra. The scaling behavior of the dielectric loss spectra shows its temperature-independent nature. The relaxation mechanism is discussed in the framework of conductivity and impedance spectroscopy. The variation of dielectric constant with temperature ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.