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Ferroelectrics Volume 323, 2005 - Issue 1
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SECTION B: STRUCTURE AND PROPERTIES

Structural, Dielectric and Electron Transport Properties of LaFeO3 Substituted (PbBa)TiO3 Ferroelectrics

N. T. Padal Department of Physics (Applied Electronics), Centre for P. G. Studies, Shivaji University, Solapur, 413 003, India
,
S. A. Pawar Department of Physics (Applied Electronics), Centre for P. G. Studies, Shivaji University, Solapur, 413 003, India
,
Y. D. Kolekar Department of Physics (Applied Electronics), Centre for P. G. Studies, Shivaji University, Solapur, 413 003, India
,
S. V. Kulkarni Department of Physics (Applied Electronics), Centre for P. G. Studies, Shivaji University, Solapur, 413 003, India
&
P. B. Joshi Department of Physics (Applied Electronics), Centre for P. G. Studies, Shivaji University, Solapur, 413 003, India
Pages 123-129 | Accepted 10 Apr 2005, Published online: 09 Mar 2011
 
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The paper reports investigations of structural properties, IR absorption, relative permittivity, pyroelectric coefficient and electrical conductivity of LaFeO3 substituted (Pb0.5Ba0.5)TiO3 ceramics.

The observations of XRD, show that the crystal structure is tetragonal. The variation of ϵ with T show a characteristic behavior of ferroelectric systems. Here the Curie point Tc decreases with increasing level of substitution. Further, the Curie Point does not change with frequency indicating absence of any significant relaxor contribution to the dielectric constant of the material. The substitution is observed to modify the electronic state of material significantly.

Acknowledgments

Paper originally presented at AMF-4, Bangalore, India, December 12-15, 2003.

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