標題: Flexible Heteroepitaxy of CoFe2O4/Muscovite Bimorph with Large Magnetostriction
作者: Liu, Heng-Jui
Wang, Chih-Kuo
Su, Dong
Amrillah, Tahta
Hsieh, Ying-Hui
Wu, Kun-Hong
Chen, Yi-Chun
Juang, Jenh-Yih
Eng, Lukas M.
Jen, Shien-Uang
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: flexible magnetic devices;cobalt ferrite (CoFe2O4);muscovite (mica);van der Waals epitaxy;magnetostriction
公開日期: 1-Mar-2017
摘要: A bimorph composed of ferrimagnetic cobalt ferrite (CoFe2O4, CFO) and flexible muscovite was fabricated via van der Waals epitaxy. The combination of X-ray diffraction and transmission electron microscopy was conducted to reveal the heteroepitaxy of the CFO/muscovite system. The robust magnetic behaviors against mechanical bending were characterized by hysteresis measurements and magnetic force microscopy, which maintain a saturation magnetization (M-s) of similar to 120-150 emu/cm(3) under different bending states. The large magnetostrictive response of the CFO film was then determined by digital holographic microscopy, where the difference of magnetostrction coefficient (Delta lambda) is -104 ppm. The superior performance of this bimorph is attributed to the nature of weak interaction between film and substrate. Such a flexible CFO/muscovite bimorph provides a new platform to develop next-generation flexible magnetic devices.
URI: http://dx.doi.org/10.1021/acsami.6b16485
http://hdl.handle.net/11536/144142
ISSN: 1944-8244
DOI: 10.1021/acsami.6b16485
期刊: ACS APPLIED MATERIALS & INTERFACES
Volume: 9
起始頁: 7297
結束頁: 7304
Appears in Collections:Articles