Rotational intersite displacement of disordered lead atoms in a relaxor ferroelectric during piezoelectric lattice straining and ferroelectric domain switching

Shinobu Aoyagi, Ayumi Aoyagi, Hitoshi Osawa, Kunihisa Sugimoto, Yuki Nakahira, Chikako Moriyoshi, Yoshihiro Kuroiwa, and Makoto Iwata
Phys. Rev. B 101, 064104 – Published 18 February 2020

Abstract

We report results of the time-resolved x-ray structure analysis of a relaxor ferroelectric single crystal under an alternating electric field. The time dependence of the lattice strain, atomic displacements, and ferroelectric domain volumes in a 0.955Pb(Zn1/3Nb2/3)O30.045PbTiO3 (PZN-4.5PT) single crystal during piezoelectric lattice straining and ferroelectric domain switching is revealed. The lattice strain induced by an electric field is consistent with that expected from the piezoelectric constants. The crystal mosaicity is momentarily increased by a nucleation of nanosized ferroelectric domains when the polarization switching starts. The nucleated ferroelectric domains grow with the time constant of τ=14μs. An intersite displacement of the disordered Pb atoms observed in those site occupancies suggests that a rotational intersite displacement of Pb atoms is easily induced by an electric field and causes continuous rotation of the spontaneous polarization. The rotational intersite displacement of Pb atoms is essential for the large piezoelectric lattice strain and fatigue-free ferroelectric domain switching.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 22 November 2019
  • Revised 24 January 2020
  • Accepted 24 January 2020

DOI:https://doi.org/10.1103/PhysRevB.101.064104

©2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Shinobu Aoyagi1,*, Ayumi Aoyagi1, Hitoshi Osawa2, Kunihisa Sugimoto2,3, Yuki Nakahira4, Chikako Moriyoshi4, Yoshihiro Kuroiwa4, and Makoto Iwata5

  • 1Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
  • 2Research and Utilization Division, Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
  • 3Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan
  • 4Graduate School of Science, Hiroshima University, Higashihiroshima, Hiroshima 739-8526, Japan
  • 5Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan

  • *aoyagi@nsc.nagoya-cu.ac.jp

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 101, Iss. 6 — 1 February 2020

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×