Pyroelectric and Electrostrictive Properties of (1 –x–y) PZN ·xBT ·yPT Ceramic Solid Solutions |
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| Authors: | Umesh Kumar L Eric Cross Arvind Halliyal |
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| Affiliation: | Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802;Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India |
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| Abstract: | The pyroelectric and electrostrictive properties of lead zinc niobate–lead titanate–barium titanate (PZN–BT–PT) ceramic solid solution were investigated. These properties of the (1 – x )PZN · x BT series were qualitatively explained with a composition fluctuation model. The pyroelectric depolarization temperatures of (1 – x – y )PZN · x BT · y PT ceramics were utilized to select compositions for room-temperature electrostrictive applications. Among them, 0.85PZN · 0.10BT · 0.05PT ceramic with Q 11= 0.018 m4/ C2, Q 12=?0.0085 m4/C2, s 2 at 25 kV/cm =?6.1 × 10?4, T max= 75°C at 1kHz, and T t= 27°C shows optimum properties for micropositioner applications. |
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