期刊
NANO LETTERS
卷 13, 期 8, 页码 3884-3889出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl401965z
关键词
Multiferroic; heterostructures; magnetoelectric coupling; self-assembly
类别
资金
- European Social Fund in Romania [POSDRU/107/1.5/S/78342]
- Alexander von Humboldt Foundation
- National Natural Science Foundation of China [51202176]
- DFG [SFB 762]
Large areas of perfectly ordered magnetic CoFe2O4 nanopillars embedded in a ferroelectric BiFeO3 matrix were successfully fabricated via a novel nucleation-induced self-assembly process. The nucleation centers of the magnetic pillars are induced before the growth of the composite structure using anodic aluminum oxide (AAO) and lithography-defined gold membranes as hard mask. High structural quality and good functional properties were obtained. Magneto-capacitance data revealed extremely low losses and magneto-electric coupling of about 0.9 mu C/cmOe. The present fabrication process might be relevant for inducing ordering in systems based on phase separation, as the nucleation and growth is a rather general feature of these systems.
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