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BaTiO_3 nanofibers of about 400 nm in diameter were synthesized via electrospinning.The evolution of the morphology and phase composition of the BaTiO_3 nanofibers was studied by scanning electron microscopy and X-ray diffraction within the annealing temperature of 750-1050 ℃.Higher annealing temperature led to rougher surface and better crystallization of the BaTiO_3 nanofibers.Below 1050 ℃,the BaTiO_3 nanofibers maintained its large aspect ratios and could still be regarded as individual nanofiber.The dielectric permittivities of the BaTiO_3 nanofibers(ε_r ~ 820) were calculated with the MG equation by considering the porous bulk specimens as composites of BaTiO_3 nanofibers and air.The ferroelectric properties of the BaTiO_3nanofibers were measured by using a ferroelectric analyzer coupled with an atomic force microscope.P-E loop measured for the BaTiO_3 nanofiber exhibits small hysteresis.
BaTiO_3 nanofibers of about 400 nm in diameter were synthesized via electrospinning. Evolution of the morphology and phase composition of the BaTiO_3 nanofibers was studied by scanning electron microscopy and X-ray diffraction within the annealing temperature of 750-1050 ° C.Higher annealing temperature led to rougher surface and better crystallization of the BaTiO_3 nanofibers.Below 1050 ° C, the BaTiO_3 nanofibers maintained its large aspect ratios and could still be viewed as individual nanofibers. dielectric permittivities of the BaTiO_3 nanofibers (ε_r ~ 820) were calculated with the MG equation by considering the porous bulk specimens as composites of BaTiO_3 nanofibers and air. the ferroelectric properties of the BaTiO_3nanofibers were measured by using a ferroelectric analyzer coupled with an atomic force microscope. PE loop measured for the BaTiO_3 nanofiber exhibits small hysteresis.