INFLUENCE OF LA IN xPBBIN OF TERNARY NANOCERAMIC COMPOSITE (1-x)0.5PMN-0.5PZT-xPBBiN SYSTEM BY MECHANICAL ACTIVATION TECHNIQUE FOR DIELECTRIC AND PIEZOELECTRIC PROPERTIES

作者：Ramam Koduri^*; Chandramouli K

来源：Ceramics-Silikaty, 2011, 55(2): 134-139.

• Ferroelectrics
• X-ray diffraction
• Dielectric response
• Mechanical Activation, Piezoelectricity

(1-x)[0.5Pb(Mg(0.33)Nb(0.67))O(3)-0.5Pb(Zr(0.53)Ti(0.47))O(3)]-x[Pb(0.557)Ba(0.38)La(0.022)Bi(0.02)Nb(2)O(6)] with both perovskite and tungsten bronze structured composite have been synthesized through mechanical activation technique. The strong influence of lanthanum addition to the lead-barium-bismuth-niobate (xPBLBiN) ceramics in perovskite structured (1-x)PMN-PZT on structural and functional properties is confirmed. X-ray diffraction patterns studies showed that these complex composites consisted of perovskite Cubic with tungsten bronze Orthorhombic phases. La modification in PBBiN of a ternary system (1-x)PMN-PZT-xPBBiN revealed intensified orthorhombicity. As La increased the dielectric and piezoelectric properties tremendously increased in (1-x)PMN-PZT-xPBLBiN nanoceramic composite. The optimum dielectric and piezoelectric properties (epsilon(RT) = 2931, k(p) = 0.461 and d(33) = 428 pC/N) were found in x = 0.4 composite. We achieved novel nanocomposites synthesized by high energy ball milling method and having binary structures in a single composite with excellent functional properties that can be used for energy harvesting applications.

• 出版日期2011