Non-volatile domain nucleation and growth in multiferroic BiFeO3 films

Yi Chun Chen, Guang Fu Wang, Hsiang Hua Tai, Jhih Wei Chen, Yen Chin Huang, Jan Chi Yang, Ying Hao Chu

研究成果: Article

24 引文 (Scopus)

摘要

We have presented a systematical study of the domain nucleation and growth behaviors in multiferroic BiFeO3 (BFO) films. Both the ferroelectric and the ferroelastic switching dynamics were investigated. Several environmental parameters, including the polarization orientations, the monodomain-like matrix, and the ordered domain walls as local boundaries, were well controlled by thin-film strain engineering through changing the vicinal angles of the substrates. The tip-based domain dynamics was studied by subsequent piezoresponse force microscope (PFM) imaging of the domain evolution under external voltage pulses. For the nanodomains written in the monodomain-like environment, the domain wall performed the thermal activated motion. The as-grown 71° domain walls can act as pinning centers for the ferroelectric domain growth driven by low fields; moreover, ferroelastic nucleation near a 71° domain wall will cause the deformation of the domain wall. The ferroelastic domain growth possessed relatively small activation fields, and therefore usually performed non-activated motion. This study revealed the effects of local environments on the dynamics forming nanoscale domains, and opened a pathway for applications in novel non-volatile functional devices.

原文English
文章編號254030
期刊Nanotechnology
22
發行號25
DOIs
出版狀態Published - 2011 六月 24

指紋

Domain walls
Nucleation
Ferroelectric materials
Microscopes
Chemical activation
Polarization
Imaging techniques
Thin films
Electric potential
Substrates

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

引用此文

Chen, Yi Chun ; Wang, Guang Fu ; Tai, Hsiang Hua ; Chen, Jhih Wei ; Huang, Yen Chin ; Yang, Jan Chi ; Chu, Ying Hao. / Non-volatile domain nucleation and growth in multiferroic BiFeO3 films. 於: Nanotechnology. 2011 ; 卷 22, 編號 25.
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Non-volatile domain nucleation and growth in multiferroic BiFeO3 films. / Chen, Yi Chun; Wang, Guang Fu; Tai, Hsiang Hua; Chen, Jhih Wei; Huang, Yen Chin; Yang, Jan Chi; Chu, Ying Hao.

於: Nanotechnology, 卷 22, 編號 25, 254030, 24.06.2011.

研究成果: Article

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