Crystal Structure and Dielectric Properties of PZT Ferroelectric Ceramic Fibers

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The crystal structures of PZT ceramic fibers with continuum spinning process were identified, showing a pure tetragonal phase of perovskite for the samples treated at around 900°C. The microstructures of the PZT fibers were observed, displaying relatively complex evolution with the increasing of temperature during heat treatment. With the increasing of frequency, the dielectric constants and loss tangents became smaller for all of the samples. Meanwhile, the dielectric constant was larger and the loss tangent smaller for the samples treated at higher temperature. Optimal properties were obtained for the fibers treated at 1000°C for 1 h.