Contribution to the comprehension of dissipation phenomena in lead zirconate titanate: aliovalent doping effect

✍ Scribed by A. Bouzid; M. Gabbay; G. Fantozzi

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 138 KB
• Volume: 370
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2003.08.122

✦ Synopsis

By the solid reaction method, undoped, potassium doped and niobium doped lead zirconate titanate (PZT) are elaborated. The mechanical losses measured in the range of the Hz as a function of temperature shows two peaks R 1 and R 2 , and a ferroelectric transition peak P 1 between ferroelectric and para-electric states on the undoped PZT-Pb(Zr 0.54 Ti 0.46 )O 3 -noted PZT54/46. Potassium doped PZT-Pb 1-x K x (Zr 0.54 Ti 0.46 )O 3 -shortly called PKZT 100x/54/46 shows an increase in the height of both the peaks at a doping content, x, less than 0.5 at.% but an opposite effect is observed above this value. Niobium doped PZT-Pb[(Zr 0.54 Ti 0.46 ) 1-y Nb y ]O 3 -shortly called PNZT 100y/54/46, shows the vanish of the R 2 peak and the decrease of the height of the R 1 peak when the doping content increases.