Volume : IV, Issue : III, March - 2015
Sol-Gel Derived Barium Strontium Zirconate Titanate (Ba0.8Sr0.2)(Zr0.2Ti0.8)O3 Powder and Ceramics
Manisha Chawla, Monika Rawat, Seema Rawat, M. Fahim
Abstract :
<p>&lt;p&gt;&amp;nbsp;Barium strontium zirconate titanate (Ba0.8Sr0.2)(Zr0.2Ti0.8)O3 [(Ba+Sr):(Zr+Ti) = 1:1] powder and ceramics were&amp;nbsp;&lt;/p&gt; &lt;div&gt;prepared using a sol&amp;ndash;gel chemical route. BSZT ceramics prepared from the sol&amp;ndash;gel derived powder were characterized for&amp;nbsp;&lt;/div&gt; &lt;div&gt;their structural, morphological, dielectric and ferroelectric properties. Temperature and frequency dependent dielectric&amp;nbsp;&lt;/div&gt; &lt;div&gt;properties were measured for these ceramics in the temperature range 30 to 200oC and at different frequencies of 100 Hz, 120 Hz, 1 kHz, 10 kHz,&amp;nbsp;&lt;/div&gt; &lt;div&gt;20 kHz and 100 kHz. It was observed that ferroelectric to paraelectric transition temperature (Tc) reduced from ~120oC for pure Barium titanate&amp;nbsp;&lt;/div&gt; &lt;div&gt;(BaTiO3) to around 20&amp;ndash;30oC with the addition of strontium. Furthermore the addition of zirconium helped in increasing the dielectric constant&amp;nbsp;&lt;/div&gt; &lt;div&gt;at all frequencies. A well defined ferroelectric loop was observed for the ceramic. Remanent polarization (Pr) value of 0.5121&amp;micro;C/m2 was obtained&amp;nbsp;&lt;/div&gt; &lt;div&gt;for the sample at room temperature.&lt;/div&gt;</p>
Keywords :
Article:
Download PDF
DOI : https://www.doi.org/10.36106/gjra
Cite This Article:
Manisha Chawla, Monika Rawat, Seema Rawat and M. Fahim Sol-Gel Derived Barium Strontium Zirconate Titanate (Ba0.8Sr0.2)(Zr0.2Ti0.8)O3 Powder and Ceramics Global Journal For Research Analysis, Vol: 4, Issue: 3 March 2015
Number of Downloads : 604
References :
Manisha Chawla, Monika Rawat, Seema Rawat and M. Fahim Sol-Gel Derived Barium Strontium Zirconate Titanate (Ba0.8Sr0.2)(Zr0.2Ti0.8)O3 Powder and Ceramics Global Journal For Research Analysis, Vol: 4, Issue: 3 March 2015