Piezoceramics based on lead zirconate titanate for creating highly sensitive ultrasonic equipment

Abstract

Solid solutions of (1-x)Pb(Ti_0.5Zr_0.5)O₃–xCdNb₂O₆ system with x = 0.0125 ÷ 0.0500, Δx = 0.0125 were obtained by two-stage solid phase synthesis followed by sintering using conventional ceramic technology and experimental studies of crystal structure, dielectric, piezoelectric, and ferroelastic properties. At 0.0250 ≤ x the studied samples belonged to the region with a tetragonal unit cell, at 0.0250 < x ≤ 0.0375 they consisted of tetragonal phases with close cell parameters, and at x > 0.0375 a heterogeneous region was formed with clusters of phases with non-tetragonal symmetry. A twofold increase in the piezoelectric parameters was achieved compared to the PZT-Pb(W,Cd)O₃ composition.

Keywords:

• Ferro-piezoceramics
• PZT
• CdNb₂O₆
• solid-state synthesis
• piezoelectric properties
• dielectric spectroscopy

Additional information

Funding

The study was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation (State task in the field of scientific activity, scientific project No. (0852-2020-0032)/(BAZ0110/20-3-07IF). The equipment of the Center of Research Institute of Physics SFedU was used.