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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


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
Issue number3
Publication statusPublished - 1 Mar 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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