Nucleation-induced self-assembly of multiferroic BiFeO3- CoFe2O4 nanocomposites

Sergiu M. Stratulat, Xiaoli Lu, Alessio Morelli, Dietrich Hesse, Wilfried Erfurth, Marin Alexe

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)


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 μC/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.

Original languageEnglish
Pages (from-to)3884-3889
Number of pages6
JournalNano Letters
Issue number8
Publication statusPublished (in print/issue) - 14 Aug 2013


  • heterostructures
  • magnetoelectric coupling
  • Multiferroic
  • self-assembly


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