TY - JOUR
T1 - Polarization Rotation at Morphotropic Phase Boundary in New Lead-Free Na1/2Bi1/2V1-xTi xO3 Piezoceramics
AU - Pan, Zhao
AU - Zhang, Mao Hua
AU - Nishikubo, Takumi
AU - Sakai, Yuki
AU - Yamamoto, Hajime
AU - Hojo, Hajime
AU - Fukuda, Masayuki
AU - Hu, Lei
AU - Ishizaki, Hayato
AU - Kaneko, Satoru
AU - Kawaguchi, Shogo
AU - Koruza, Jurij
AU - Rödel, Jürgen
AU - Azuma, Masaki
N1 - Funding Information:
This work was partially supported by Grants-in-Aids for Scientific Research JP18H05208 and JP19H05625 from the Japan Society for the Promotion of Science (JSPS), the Kanagawa Institute of Industrial Science and Technology, and the Hessian State Ministry for Higher Education, Research and the Arts under the LOEWE collaborative project "FLAME". The synchrotron radiation experiments were performed at SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (2018B1860, 2019A1045, and 2020A0589).
Funding Information:
This work was partially supported by Grants-in-Aids for Scientific Research JP18H05208 and JP19H05625 from the Japan Society for the Promotion of Science (JSPS), the Kanagawa Institute of Industrial Science and Technology, and the Hessian State Ministry for Higher Education, Research and the Arts under the LOEWE collaborative project “FLAME”. The synchrotron radiation experiments were performed at SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (2018B1860, 2019A1045, and 2020A0589).
Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/2/3
Y1 - 2021/2/3
N2 - In this work, we show that polarization rotation enhances the piezoresponse in a high-performance lead-free piezoelectric material, Na1/2Bi1/2V1-xTixO3, a solid solution between tetragonal Na1/2Bi1/2VO3 and rhombohedral Na1/2Bi1/2TiO3, obtained by high-pressure synthesis. The system forms a pure perovskite structure with a favorable morphotropic phase boundary (MPB) located around x = 0.90, which separates the tetragonal and rhombohedral phases. In addition, a distinct monoclinic phase with polarization rotation as functions of composition and temperature is observed. XRD measurements revealed the moderately high Curie temperature of 523 K at x = 0.95 in the MPB. The piezoelectric coefficient d33 of the monoclinic x = 0.95 sample, 42 pC/N, is higher than those of the tetragonal and rhombohedral phases. Even though the present lead-free Na1/2Bi1/2V1-xTixO3 ceramics feature smaller d33 values compared to many currently available lead-free piezoelectric materials as a result of insufficient poling and low density, we expect our findings open up opportunities for exploring promising lead-free piezoelectric materials in Na1/2Bi1/2VO3-based perovskites.
AB - In this work, we show that polarization rotation enhances the piezoresponse in a high-performance lead-free piezoelectric material, Na1/2Bi1/2V1-xTixO3, a solid solution between tetragonal Na1/2Bi1/2VO3 and rhombohedral Na1/2Bi1/2TiO3, obtained by high-pressure synthesis. The system forms a pure perovskite structure with a favorable morphotropic phase boundary (MPB) located around x = 0.90, which separates the tetragonal and rhombohedral phases. In addition, a distinct monoclinic phase with polarization rotation as functions of composition and temperature is observed. XRD measurements revealed the moderately high Curie temperature of 523 K at x = 0.95 in the MPB. The piezoelectric coefficient d33 of the monoclinic x = 0.95 sample, 42 pC/N, is higher than those of the tetragonal and rhombohedral phases. Even though the present lead-free Na1/2Bi1/2V1-xTixO3 ceramics feature smaller d33 values compared to many currently available lead-free piezoelectric materials as a result of insufficient poling and low density, we expect our findings open up opportunities for exploring promising lead-free piezoelectric materials in Na1/2Bi1/2VO3-based perovskites.
UR - http://www.scopus.com/inward/record.url?scp=85100258699&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85100258699&partnerID=8YFLogxK
U2 - 10.1021/acsami.0c18482
DO - 10.1021/acsami.0c18482
M3 - Article
C2 - 33475346
AN - SCOPUS:85100258699
SN - 1944-8244
VL - 13
SP - 5208
EP - 5215
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 4
ER -