TY - JOUR
T1 - Enhanced piezoelectricity in 0.7BiFeO3-0.3BaTiO3 lead-free ceramics
T2 - Distinct effect of poling engineering
AU - Song, Aizhen
AU - Tang, Yu Cheng
AU - Li, Hezhang
AU - Wang, Ning
AU - Zhao, Lei
AU - Pei, Jun
AU - Zhang, Bo Ping
N1 - Publisher Copyright:
© 2023 The Authors
PY - 2023/9
Y1 - 2023/9
N2 - BiFeO3-BaTiO3 based ceramics are considered to be the most promising lead-free piezoelectric ceramics due to their large piezoelectric response and high Curie temperature. Since the piezoelectric response of piezoelectric ceramics just appears after poling engineering, in this work, the domain evolution and microscopic piezoresponse were observed in-situ using piezoresponse force microscopy (PFM) and switching spectroscopy piezoresponse force microscopy (SS-PFM), which can effectively study the local switching characteristics of ferroelectric materials especially at the nanoscale. The new domain nucleation preferentially forms at the boundary of the relative polarization region and expands laterally with the increase of bias voltage and temperature. The maximum piezoresponse (Rs), remnant piezoresponse (Rrem), maximum displacement (Dmax) and negative displacement (Dneg) at 45 V and 120 °C reach 122, 69, 127 pm and 75 pm, respectively. Due to the distinct effect of poling engineering in full domain switching, the corresponding d33 at 50 kV/cm and 120 °C reaches a maximum of 205 pC/N, which is nearly twice as high as that at room temperature. Studying the evolution of ferroelectric domains in the poling engineering of BiFeO3-BaTiO3 ceramics provides an insight into the relationship between domain structure and piezoelectric response, which has implications for other piezoelectric ceramics as well.
AB - BiFeO3-BaTiO3 based ceramics are considered to be the most promising lead-free piezoelectric ceramics due to their large piezoelectric response and high Curie temperature. Since the piezoelectric response of piezoelectric ceramics just appears after poling engineering, in this work, the domain evolution and microscopic piezoresponse were observed in-situ using piezoresponse force microscopy (PFM) and switching spectroscopy piezoresponse force microscopy (SS-PFM), which can effectively study the local switching characteristics of ferroelectric materials especially at the nanoscale. The new domain nucleation preferentially forms at the boundary of the relative polarization region and expands laterally with the increase of bias voltage and temperature. The maximum piezoresponse (Rs), remnant piezoresponse (Rrem), maximum displacement (Dmax) and negative displacement (Dneg) at 45 V and 120 °C reach 122, 69, 127 pm and 75 pm, respectively. Due to the distinct effect of poling engineering in full domain switching, the corresponding d33 at 50 kV/cm and 120 °C reaches a maximum of 205 pC/N, which is nearly twice as high as that at room temperature. Studying the evolution of ferroelectric domains in the poling engineering of BiFeO3-BaTiO3 ceramics provides an insight into the relationship between domain structure and piezoelectric response, which has implications for other piezoelectric ceramics as well.
KW - 0.7BiFeO-0.3BaTiO
KW - Domain evolution
KW - Microscopic piezoresponse
KW - Piezoelectricity
KW - Poling engineering
UR - http://www.scopus.com/inward/record.url?scp=85153859656&partnerID=8YFLogxK
U2 - 10.1016/j.jmat.2023.03.002
DO - 10.1016/j.jmat.2023.03.002
M3 - Article
AN - SCOPUS:85153859656
SN - 2352-8478
VL - 9
SP - 971
EP - 979
JO - Journal of Materiomics
JF - Journal of Materiomics
IS - 5
ER -