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Title: Ultrafast electron-phonon coupling and photo-induced strain in the morphotropic phase boundary of BixDy1−xFeO3 films
Authors: Zhang, Zeyu
You, Lu
Du, Juan
Wang, Junling
Jin, Zuanming
Ma, Guohong
Leng, Yuxin
Keywords: Morphotropic Phase Boundary
Ultrafast Photonics
Issue Date: 2018
Source: Zhang, Z., You, L., Du, J., Wang, J., Jin, Z., Ma, G., et al. (2018). Ultrafast electron-phonon coupling and photo-induced strain in the morphotropic phase boundary of BixDy1−xFeO3 films. Scientific Reports, 8(1), 3258-.
Series/Report no.: Scientific Reports
Abstract: The interplay among ferroelectric, magnetic and elastic degrees of freedom in multiferroics is the key issues in condensed matters, which has been widely investigated by various methods. Here, using ultrafast two-color pump-probe spectroscopy, the picosecond electron-phonon and spin-lattice coupling process in Dysprosium doped-BiFeO3 (BDFO) films on SrTiO3 (STO) substrate have been investigated systematically. The Dy-doping induced structural transition and magnetic enhancement in BDFO is observed by ultrafast electron-phonon and spin-lattice interaction, respectively. The elastic anomalies in BDFO films are revealed by the photo-induced coherent acoustic phonon. With increasing the Dy doping ratio, the frequencies of the acoustic phonon in the films are modulated, and the phonon transmission coefficient between films and substrate is found to approach unity gradually. The ultrafast observation of the tunability of the ferroelectric, magnetic and the elastic properties in the morphotropic phase boundary of rare-earth doped BFO films provides new insights into the integration of BFO in next-generation high frequency electro-magnetic and electroacoustic devices.
ISSN: 2045-2322
Rights: © 2018 The Author(s) (Nature Publishing Group). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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