CHARACTERIZATION OF ELECTROSPUN BaTiO3/POLYVINYLPYRROLIDON E(PVP) NANOFIBERS

Barium titanate (BaTiO3, BTO) ferroelectrics are polar material that exhibits net spontaneous polarization without external applied field [1,2]. The polarization can be reoriented by applying the electric field. BTO with perovskite structure is widely used due to their ferroelectric, pyroelectric and piezoelectric properties in various electronic applications such as multi-layer ceramic capacitors (MLCCs), transducers, sensors and actuators, solid oxide fuel cell, and ferroelectric random access memories (FRAMs) [1,2]. BTO nanofibers were fabricated by drying electrospun BTO/polyvinylpyrrolidone(PVP) nanofibers for 1 h at 80oC in vacuum and subsequent annealing for 1 h at 750oC in air. During the annealing, PVP was removed and the crystallization was completed. The properties of electrospun BTO nanofibers were evaluated by using a TG/DSC, an XRD, a scanning SEM, a TEM, a Cannon-Fenske viscometer, a pycnometer, a dynamic tensiometer, and a FT-IR.