Scientists from Taiwan and Germany report a strong magnetic enhancement in self-assembled multiferroic-ferrimagnetic nanostructures in their recent Nanoscale paper.
The group found that the ordered magnetic moment of Co2+ ions was significantly greater in CoFe2O4 nano-pillars embedded in multiferroic BiFeO3 matrices compared to CoFe2O4 nano-pillars embedded in SrTiO3 matrices or CoFe2O4- BiFeO3 thin films.
Their study clearly indicates that the high interface-to-volume ratio of vertical nanostructures creates a strong ferromagnetic and antiferromagnetic magnetic coupling via an interface. The study is important for the continuing pursuit for practical room-temperature multiferroic materials for high-performance oxide-based devices.
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Strong magnetic enhancement in self-assembled multiferroic-ferrimagnetic nanostructures
Ying-Jiun Chen, Ying-Hui Hsieh, Sheng-Chieh Liao, Zhiwei Hu, Meng-Jie Huang, Wei-Cheng Kuo, Yi-Ying Chin, Tzeng-Ming Uen, Jenh-Yih Juang, Chih-Huang Lai, Hong-Ji Lin, Chien-Te Chen and Ying-Hao Chu