摘要
(1-x)Bi0.5(Na0.82K0.18)0.5Ti0.96(Al0.5Nb0.5)0.04O3-xBi0.46Na0.46Ba0.5La0.02Ti0.97Zr0.03O3 lead-free ceramics(abbreviated as BNKTAN-100x BNBLTZ)was prepared by the conventional solid reaction.XRD patterns and EDS spectrums revealed that a stable solid solution had been formed between BNBLTZ and BNKTAN.With the introduction of BNBLTZ anti-ferroelectric content,BNKTAN relaxor ferroelectrics exhibited the excellent field-induced-strain for x=0.04 corresponding to electric field-induced strain S^0.505%and normal strain d33*~777 pm/V at 65 kV/cm.The large strain response was attributed to the emergence of PNRs in the relaxation process.Additionally,an excellent fatigue resistance performance was obtained within 105cycles(S=0.505%–0.495%and d33*=777–758 pm/V,65 kV/cm).It suggested that prepared ceramics had the great potential to strain sensor and actuators.
基金
the National Nature Science Foundation of China(No.51672220)
the Fundamental Research Funds for the Central Universities of NPU(No.3102019GHXM002)
the SKLSP Project(No.2019-TZ-04).
