標題: Ferroelectric domain wall pinning at a bicrystal grain boundary in bismuth ferrite
作者: Rodriguez, Brian J.
Chu, Y. H.
Ramesh, R.
Kalinin, Sergei V.
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 6-Oct-2008
摘要: The ferroelectric polarization switching behavior at the 24 degrees (100) tilt grain boundary (GB) in an epitaxial multiferroic BiFeO(3) bicrystal film is studied using piezoresponse force microscopy (PFM). The PFM amplitudes across positively and negatively poled GB regions suggest the presence of a frozen polarization component at the interface. The switching experiments demonstrate that the GB attracts the domain wall and acts as a pinning center. The PFM results are compared with conductive atomic force microscopy and spectroscopy, which suggest domain wall pinning at the GB can be partially attributed to increased conductance at the GB. (C) 2008 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.2993327
http://hdl.handle.net/11536/8261
ISSN: 0003-6951
DOI: 10.1063/1.2993327
期刊: APPLIED PHYSICS LETTERS
Volume: 93
Issue: 14
結束頁: 
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