Transient photostriction and strain modulation in La, Nb-codoped BiFeO3 thin films

Authors

Yue Xu, Shanghai University
Zeyu Zhang, Shanghai University
Zuanming Jin, Shanghai University
Qunfeng Pan, Shanghai University
Xian Lin, Shanghai University
Guohong Ma, Shanghai University
Zhenxiang Cheng, University of WollongongFollow

RIS ID

91379

Publication Details

Yue, X., Ze-Yu, Z., Zuan-Ming, J., Qun-Feng, P., Xian, L., Guohong, M. & Zhen-Xiang, C. (2014). Transient photostriction and strain modulation in La, Nb-codoped BiFeO3 thin films. Acta Physica Sinica, 63 (11), 117801-1-117801-6.

Abstract

Coherent longitudinal acoustic phonons in Bi0.8La0.2Fe0.99Nb0.01O3 (BLFNO) films are photo-induced and detected by the femtosecond time-resolved reflectance spectroscopy. The generation mechanism of coherent longitudinal acoustic phonons is attributed to the transient photostriction effect. The strain modulation of the out-of-plane elastic properties C⊥ is realized in BLFNO films deposited on different substrates (ZrO2 and PbMg1/3Nb2/3-PbTiO3). Strain modulation of the thin film is demonstrated by applying an electromotive force on the piezoelectric substrate PbMg1/3Nb2/3-PbTiO3.