Unraveling the origins of electromechanical response in mixed-phase bismuth ferrite

R. K. Vasudevan, M. B. Okatan, Y. Y. Liu, S. Jesse, J. C. Yang, W. I. Liang, Y. H. Chu, J. Y. Li, S. V. Kalinin, V. Nagarajan

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29 引文 斯高帕斯(Scopus)

摘要

The origin of giant electromechanical response in a mixed-phase rhombohedral-tetragonal BiFeO3 thin film is probed using subcoercive scanning probe microscopy based multiple-harmonic measurements. Significant contributions to the strain arise from a second-order harmonic response localized at the phase boundaries. Strain and dissipation data, backed by thermodynamic calculations, suggest that the source of the enhanced electromechanical response is the motion of phase boundaries. These findings elucidate the key role of labile phase boundaries, both natural and artificial, in achieving thin films with giant electromechanical properties.

原文English
文章編號020402
期刊Physical Review B - Condensed Matter and Materials Physics
88
發行號2
DOIs
出版狀態Published - 2013 7月 8

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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