Ultrafast Anisotropic Optical Response and Coherent Acoustic Phonon Generation in Polycrystalline BaTiO3-BiFeO3
SCOPUS
- Title
- Ultrafast Anisotropic Optical Response and Coherent Acoustic Phonon Generation in Polycrystalline BaTiO3-BiFeO3
- Authors
- Magill, Brenden A.; Park, Kyoung-Duck; Zhou, Yuan; Chopra, Anuj; Maurya, Deepam; Priya, Shashank; Raschke, Markus; Belyanin, Alexey; Stanton, Christopher J.; Khodaparast, Giti A.
- Date Issued
- 2016-08
- Publisher
- Walter de Gruyter GmbH
- Abstract
- Abstract
We optically study the as-yet little explored multiferroic material, BaTiO3-BiFeO3 (BTO-BFO), that has demonstrated enhanced magnetic properties, a higher DC resistance in comparison to BFO, and improved magnetoelectric coupling. Our studies include: ultrafast time resolved differential reflection, optically induced birefringence, and second-harmonic nano-imaging of the ferroic order. We observe a strong sensitivity to pump/probe polarizations, photo-induced ferroelectric poling on a picosecond timescale, as well as the generation of photo-induced coherent acoustic phonons with a frequency of
∼
11
$ \sim 11$
GHz. The second-harmonic generation nano-imaging reveals disordered but distinct ferroelectric domain order, percolating even across grain boundaries in the poly-crystalline thin film.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/114706
- DOI
- 10.1515/ehs-2015-0028
- ISSN
- 2329-8774
- Article Type
- Article
- Citation
- Energy Harvesting and Systems, vol. 3, no. 3, page. 229 - 236, 2016-08
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- There are no files associated with this item.
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