TrC1O: Electron emission from ferroelectrics and its applications

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Abstract
Electron emission (FEE) is observed from ferroelectric crystals under diverse external perturbations, such as the pyroelectric and piezoelectric effects, polar axis switching, etc. Observation of FEE due to a small variation of temperature or reversal of the polar axis shows that FEE occurs due to the changes in the dipole moment of the crystal lattice. FEE represents a screening current that flows into the vacuum. It makes it possible to use this effect for novel devices such as IR position sensitive detector, neutron flux imaging as well as ferroelectric cold cathodes with high emission current density.