Ferroelectric domain structures in <001>-oriented K0.15Na0.85NbO3lead-free single crystal

Yan Chen, Chi Man Wong, Hao Deng, Hei Man Yau, Danyang Wang, Zhibo Yan, Haosu Luo, Helen L.W. Chan, Jiyan Dai

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5 Citations (Scopus)

Abstract

In this work, ferroelectric domain structures of <001 >-oriented K0.15Na0.85NbO3single crystal are characterized. Transmission electron microscopy (TEM) observation revealed high-density of laminate domain structures in the crystal and the lattices of the neighboring domains are found to be twisted in a small angle. Superlattice diffraction spots of 1/2 {eeo } and 1/2 {ooe} in electron diffraction patterns are observed in the crystal, revealing the a+a+c-tilting of oxygen octahedral in the perovskite structure. The piezoresponse of domains and in-situ poling responses of K0.15Na0.85NbO3crystal are observed by piezoresponse force microscopy (PFM), and the results assure its good ferroelectric properties.
Original languageEnglish
Article number037117
JournalAIP Advances
Volume5
Issue number3
DOIs
Publication statusPublished - 1 Mar 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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