Mechanical switching of nanoscale multiferroic phase boundaries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

22 Scopus Citations
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Author(s)

  • Yong-Jun Li
  • Jian-Jun Wang
  • Jian-Chao Ye
  • Xiao-Xing Ke
  • Gao-Yang Gou
  • Yan Wei
  • Fei Xue
  • Jing Wang
  • Chuan-Shou Wang
  • Ren-Ci Peng
  • Xu-Liang Deng
  • Xiao-Bing Ren
  • Long-Qing Chen
  • Ce-Wen Nan
  • Jin-Xing Zhang

Detail(s)

Original languageEnglish
Pages (from-to)3405-3413
Journal / PublicationAdvanced Functional Materials
Volume25
Issue number22
Publication statusPublished - 1 Jun 2015

Abstract

Tuning the lattice degree of freedom in nanoscale functional crystals is critical to exploit the emerging functionalities such as piezoelectricity, shape-memory effect, or piezomagnetism, which are attributed to the intrinsic lattice-polar or lattice-spin coupling. Here it is reported that a mechanical probe can be a dynamic tool to switch the ferroic orders at the nanoscale multiferroic phase boundaries in BiFeO3 with a phase mixture, where the material can be reversibly transformed between the "soft" tetragonal-like and the "hard" rhombohedral-like structures. The microscopic origin of the nonvolatile mechanical switching of the multiferroic phase boundaries, coupled with a reversible 180 rotation of the in-plane ferroelectric polarization, is the nanoscale pressure-induced elastic deformation and reconstruction of the spontaneous strain gradient across the multiferroic phase boundaries. The reversible control of the room-temperature multiple ferroic orders using a pure mechanical stimulus may bring us a new pathway to achieve the potential energy conversion and sensing applications. A pure mechanical control of the nanoscale multiferroic phase boundaries is achieved in mixed-phase BiFeO3, which is attributed to pressure-induced elastic deformation and reconstruction of the spontaneous strain gradient across the boundaries. This demonstrates a new pathway to reversibly control the multiple ferroic orders such as ferroelectricity, ferroelasticity, and so on.

Research Area(s)

  • atomic force microscope, bismuth ferrite, multiferroicity, phase boundaries

Citation Format(s)

Mechanical switching of nanoscale multiferroic phase boundaries. / Li, Yong-Jun; Wang, Jian-Jun; Ye, Jian-Chao; Ke, Xiao-Xing; Gou, Gao-Yang; Wei, Yan; Xue, Fei; Wang, Jing; Wang, Chuan-Shou; Peng, Ren-Ci; Deng, Xu-Liang; Yang, Yong; Ren, Xiao-Bing; Chen, Long-Qing; Nan, Ce-Wen; Zhang, Jin-Xing.

In: Advanced Functional Materials, Vol. 25, No. 22, 01.06.2015, p. 3405-3413.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal