FIBRE CONSISTING OF FERROELECTRIC MATERIAL, ASSEMBLY COMPRISING FIBRES OF THIS TYPE AND METHOD FOR PRODUCING SAID FIBRES AND ASSEMBLY

摘要

The invention relates to a fibre (1) consisting of a ferroelectric material with a perovskite structure, characterised in that said fibre is essentially a monocrystalline body. To produce the fibre, a polycrystalline fibre comprising fine primary particles of the ferroelectric material is prepared, said particles being converted into the monocrystalline body consisting of ferroelectric material by means of secondary re-crystallisation. The monocrystalline fibre exhibits a higher ferroelectric and piezoelectric effect in comparison to the polycrystalline fibre. It is beneficial if several fibres are combined to form components (4,9) in the form of actuators, sensors and composite transformers. The fibres are bonded, for example, by means of secondary re-crystallisation, sintering or plastic embedding.