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Integrated Ferroelectrics
An International Journal
Volume 122, 2010 - Issue 1
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Original Articles

Effects of Samarium Doping on the Ferroelectric Properties of Modified Lead Zirconate Titanate Ceramics

Pratibha Singh Electroceramics Research Laboratory, Department of Physics, GVM Girls College, Sonepat, 131001, India; School of Physics & Materials Science, Thapar University, Patiala, 147004, India
,
Sangeeta Singh Electroceramics Research Laboratory, Department of Physics, GVM Girls College, Sonepat, 131001, India
,
J. K. Juneja Department of Physics, Hindu College, Sonepat, 131001, India
,
K. K. Raina School of Physics & Materials Science, Thapar University, Patiala, 147004, India
,
R. P. Pant National Physical Laboratory, New Delhi, 110012, India
&
Chandra Prakash Directorate of ER&IPR, DRDO, DRDO Bhawan, New Delhi, 110105, India
Pages 23-30 | Received 13 Dec 2009, Accepted 03 May 2010, Published online: 20 Nov 2010
 
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Abstract

Polycrystalline ceramics samples having compositional formula PbZr0.588Ti0.392Fe0.01Nb0.01O3 and Pb0.98Sm0.02Zr0.588Ti0.392Fe0.01Nb0.01O3 were prepared by traditional solid state route. Sintering was carried out at 1250°C in closed alumina crucibles in lead rich atmosphere. XRD analysis confirmed formation of tetragonal perovskite structure and tetragonality was found to decrease with Sm substitution. In order to study microstructure, SEM micrographs were recorded on freshly broken pieces. The grain size was observed to decrease with Sm addition. P-E hysteresis loops were recorded at different temperatures for investigating ferroelectric properties. Sm substitution improves squareness and remanence.

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