標題: Epitaxial Photostriction-Magnetostriction Coupled Self-Assembled Nanostructures
作者: Liu, Heng-Jui
Chen, Long-Yi
He, Qing
Liang, Chen-Wei
Chen, Yu-Ze
Chien, Yung-Shun
Hsieh, Ying-Hui
Lin, Su-Jien
Arenholz, Elke
Luo, Chih-Wei
Chueh, Yu-Lun
Chen, Yi-Chun
Chu, Ying-Hao
材料科學與工程學系
電子物理學系
Department of Materials Science and Engineering
Department of Electrophysics
關鍵字: self-assembled;nanostructures;photostrictive SrRuO3;magnetostrictive CoFe2O4;pump-probe technique;MFM;coupling
公開日期: 1-Aug-2012
摘要: Self-assembled vertical nanostructures take advantage of high interface-to-volume ratio and can be used to design new functionalities by the choice of a proper combination of constituents. However, most of the studies to date have emphasized the functional controllability of the nanostructures using external electric or magnetic fields. In this study, to introduce light (or photons) as an external control parameter in a self-assembled nanostructure system, we have successfully synthesized oxide nanostructures with CoFe2O4 nanopillars embedded in a SrRuO3 matrix. The combination of photostrictive SrRuO3 and magnetostrictive CoFe2O4 in the intimately assembled nanostructures leads to a light-induced, ultrafast change in magnetization of the CoFe2O4 nanopillars. Our work demonstrates a novel concept on oxide nanostructure design and opens an alternative pathway for the explorations of diverse functionalities in heteroepitaxial self-assembled oxide nanostructures.
URI: http://dx.doi.org/10.1021/nn301976p
http://hdl.handle.net/11536/16909
ISSN: 1936-0851
DOI: 10.1021/nn301976p
期刊: ACS NANO
Volume: 6
Issue: 8
起始頁: 6952
結束頁: 6959
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