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: | 1-三月-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 |
顯示於類別: | 期刊論文 |