Ion emission from ferroelectrics

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Abstract
Ion emission from lead–zirconium–titanate ferroelectrics under the application of voltage pulses has been observed and analyzed by a time-of-flight mass spectrometer. Mass spectra and relative timing of negative and positive ions and electron emission processes have been determined. The ion spectra are compared with time-of-flight secondary ion mass spectroscopy data obtained in situ. Based on the experimental results, possible microscopic mechanisms of ion formation are discussed.