標題: | Strong magnetic enhancement in self-assembled multiferroic-ferrimagnetic nanostructures |
作者: | Chen, Ying-Jiun Hsieh, Ying-Hui Liao, Sheng-Chieh Hu, Zhiwei Huang, Meng-Jie Kuo, Wei-Cheng Chin, Yi-Ying Uen, Tzeng-Ming Juang, Jenh-Yih Lai, Chih-Huang Lin, Hong-Ji Chen, Chien-Te 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 |
公開日期: | 2013 |
摘要: | In the past decade, self-assembled vertical nano-heterostructures have drawn considerable attention because a high interface-to-volume ratio can be used to tailor or create functionalities. We have systematically investigated the magnetic properties of oxide heterostructures consisting of the CoFe2O4 nanopillars embedded in the BiFeO3 matrix using macroscopic magnetization measurements and element-selective soft X-ray absorption magnetic circular dichroism (XMCD) at the Co- and Fe-L-2,L-3 edge. The magnetization and XMCD data show that the total ordered magnetic moment of Co2+ in CoFe2O4-BiFeO3 nano-heterostructures is strongly enhanced. This study clearly indicates that the high interface-to-volume ratio vertical nanostructure creates a strong ferromagnetic and antiferromagnetic magnetic coupling via an interface. Furthermore, the magnetic coupling can be tuned in the multiferroic-ferrimagnetic self-assembled heterostructures by controlling the spacing between nanopillars. |
URI: | http://hdl.handle.net/11536/21963 http://dx.doi.org/10.1039/c3nr00104k |
ISSN: | 2040-3364 |
DOI: | 10.1039/c3nr00104k |
期刊: | NANOSCALE |
Volume: | 5 |
Issue: | 10 |
起始頁: | 4449 |
結束頁: | 4453 |
顯示於類別: | 期刊論文 |