Synchrotron radiation analyses of lattice strain behaviors for rhombohedral Pb(Zn1/3Nb2/3)O3–PbTiO3 single crystals under electric fields

Yuuki KITANAKA; Yuji NOGUCHI; Masaru MIYAYAMA; Yutaka KAGAWA; Chikako MORIYOSHI; Yoshihiro KUROIWA; Hironori FUJISAWA; Masaru SHIMIZU

doi:10.2109/jcersj2.121.632

Feature: Evolution of Dielectric Materials II: Papers

Synchrotron radiation analyses of lattice strain behaviors for rhombohedral Pb(Zn_1/3Nb_2/3)O₃–PbTiO₃ single crystals under electric fields

Yuuki KITANAKA, Yuji NOGUCHI, Masaru MIYAYAMA, Yutaka KAGAWA, Chikako MORIYOSHI, Yoshihiro KUROIWA, Hironori FUJISAWA, Masaru SHIMIZU

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Keywords: Ferroelectricity, Piezoelectric strain property, Single-crystal X-ray diffraction, Domain structure, PZN–PT

JOURNAL FREE ACCESS

2013 Volume 121 Issue 1416 Pages 632-637

DOI https://doi.org/10.2109/jcersj2.121.632

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Abstract

The behaviors of intrinsic unit-cell strains under applied electric fields (E) along the ⟨100⟩ direction were investigated for rhombohedral Pb(Zn_1/3Nb_2/3)O₃–(6–7%)PbTiO₃ (PZN–PT) single crystals by in-situ high-energy synchrotron radiation X-ray diffraction study. The E-induced unit-cell strains accompanied with a reversible phase transition from rhombohedral to tetragonal via two monoclinic phases agree well with the macroscopic strain properties observed for the crystals. The structural analyses using the single-crystal X-ray diffraction and domain observations with piezoresponse force microscopy lead to a conclusion that the E-induced unit-cell strains are mainly responsible for the high piezoelectric performance of the PZN–(6–7%)PT single crystals.

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