%0 Journal Article %T Effect of Y3+ and Nb5+ co-doping on dielectric and piezoelectric properties of PZT ceramics %A علی خرسند زاک %A A. JALALIAN %A Hosseini, Mohammad %A Kompany, Ahmad %A T. SHEKOFTEH NARM %J Materials Science-Poland %@ 2083-1331 %D 2010