Dielectric Properties of Lead Zirconate and Barium‐Lead Zirconate

Methods are described for preparing lead zirconate and mixtures of lead and barium zirconate in ceramic form. These compositions are shown to constitute a new class of ferroelectric materials having dielectric constants as high as 11,000. Dielectric constants are measured at 1 mc. per second in a temperature range 25° to 350° C. Nonlinear dielectric properties and piezoelectric effects are demonstrated.