Ferroelectric, piezoelectric properties and magnetoelectric coupling behavior in aurivillius Bi5Ti3FeO15 multiferroic nanofibers by electrospinning

摘要

Aurivillius Bi(5)Ti(3)FeCt(15) (BTF) multiferroic (MF) nanofibers (NFs) of about 400 nm were fabricated by electrospinning and calcination. The BTF NFs exhibit an effective micro-piezoelectric coefficient of 35 pm/V and benign micro-ferroelectricity. Macro-ferroelectric and magnetoelectric coupling behavior were investigated in detail by non -sintering and pressing for the first time, which is smaller than that of the BTF ceramic or film due to the adverse effects of filled air. A magnetoelectric (ME) voltage coefficient as large as 14 mVcm(-1) Oe(-1) can be achieved. Weak ferromagnetism was also realized at RT. Although the sintering temperature was only 600 degrees C, MF BTF NFs as multiferroic materials were successfully obtained, which offers new insights into the design and application of promising lead-free MF materials for novel devices. (C) 2016 Elsevier B.V. All rights reserved.