Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
5
From page
466
To page
470
Abstract
Piezoelectric single crystals of 0.58Pb(Sc1/2Nb1/2)–0.42PbTiO3 and Nb5+-doped PSN–PT have been grown using flux technique. It is believed that the addition of Nb5+ creates lead vacancy ( V Pb ) in order to compensate charge neutrality. The structural distortion that occured in the doped crystals has been revealed through broadening of some peaks in X-ray diffraction studies. Niobium content that increased from 0.50 to 1.00 mol% might have induced more defect dipoles associated with V pb . This plays a significant role in improving the ferroelectric, dielectric and piezoelectric properties. Our observations clearly show an increase in the spontaneous polarization ( P r ) , dielectric constant at room temperature, degree of diffuseness and transition temperature ( T c ) and also a decrease in coercive field. The reasons behind these enhanced electrical properties are discussed in detail.
Journal title
Acta Tropica
Serial Year
2007
Journal title
Acta Tropica
Record number
1750100
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