Properties of PMN–PT fibres fabricated using powder of PMN–PT single crystals

Lead magnesium niobate–lead titanate (PMN–PT) ceramic fibres with the nominal composition of 0.65Pb(Mg1/3Nb2/3)O3–0.35PbTiO3 were synthesised using PMN–PT single crystal powder and poly(acrylic acid). The fibres were extruded directly by pressing the mixture through a spinneret. The fibres were well crystallised after sintering at 1250 °C and the final diameter was around 300 μm. The microstructural properties of the fibres were investigated using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The electrical characteristics of the fibre were determined by measuring the hysteresis D–E loop, relative permittivity and impedance spectrum. The measured results showed that this method can be used to fabricate PMN–PT fibres with good performance.