Open AccessTransient photostriction and strain modulation in La, Nb-codoped BiFeO3 thin films
Author(s) -
Yue Xu,
Zhang Ze-Yu,
Zuanming Jin,
Qunfeng Pan,
Xian Lin,
Ma Guo-Hong,
Cheng Zhen-Xiang
Publication year - 2014
Publication title -
acta physica sinica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.117801
Subject(s) - materials science , phonon , thin film , modulation (music) , femtosecond , piezoelectricity , strain (injury) , condensed matter physics , transient (computer programming) , electromotive force , optics , substrate (aquarium) , optoelectronics , composite material , nanotechnology , laser , physics , acoustics , medicine , oceanography , operating system , geology , computer science , quantum mechanics
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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