TITLE

High piezoelectric response in polar-axis-oriented CaBi4Ti4O15 ferroelectric thin films

AUTHOR(S)
Fu, Desheng; Suzuki, Kazuyuki; Kato, Kazumi
PUB. DATE
October 2004
SOURCE
Applied Physics Letters;10/18/2004, Vol. 85 Issue 16, p3519
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on the piezoelectric properties of polar-axis-oriented CaBi4Ti4O15 films detected by atomic force microscope (AFM). The sol-gel-derived films onto Pt foil show excellent switching properties, and can be uniformly polarized over large areas with a conductive AFM tip. The films have an extremely high piezoelectric coefficient of d33, and a value of 180 pm/V has been detected. These results indicate that the oriented bismuth-layered films can be used as the lead-free piezoelectrics.
ACCESSION #
14803307

 

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