Title

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

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.

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Link to publisher version (DOI)

http://dx.doi.org/10.7498/aps.63.117801