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 journalArticle

36 Citations (Scopus)

Abstract

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.

LanguageEnglish
Pages3884-3889
Number of pages6
JournalNano Letters
Volume13
Issue number8
DOIs
Publication statusPublished - 14 Aug 2013

Fingerprint

Self assembly
self assembly
Nanocomposites
nanocomposites
Nucleation
nucleation
Aluminum Oxide
composite structures
Composite structures
Phase separation
Gold
Lithography
Ferroelectric materials
Masks
Capacitance
masks
lithography
aluminum oxides
capacitance
gold

Keywords

  • heterostructures
  • magnetoelectric coupling
  • Multiferroic
  • self-assembly

Cite this

Stratulat, S. M., Lu, X., Morelli, A., Hesse, D., Erfurth, W., & Alexe, M. (2013). Nucleation-induced self-assembly of multiferroic BiFeO3- CoFe2O4 nanocomposites. Nano Letters, 13(8), 3884-3889. https://doi.org/10.1021/nl401965z
Stratulat, Sergiu M. ; Lu, Xiaoli ; Morelli, Alessio ; Hesse, Dietrich ; Erfurth, Wilfried ; Alexe, Marin. / Nucleation-induced self-assembly of multiferroic BiFeO3- CoFe2O4 nanocomposites. In: Nano Letters. 2013 ; Vol. 13, No. 8. pp. 3884-3889.
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Stratulat, SM, Lu, X, Morelli, A, Hesse, D, Erfurth, W & Alexe, M 2013, 'Nucleation-induced self-assembly of multiferroic BiFeO3- CoFe2O4 nanocomposites', Nano Letters, vol. 13, no. 8, pp. 3884-3889. https://doi.org/10.1021/nl401965z

Nucleation-induced self-assembly of multiferroic BiFeO3- CoFe2O4 nanocomposites. / Stratulat, Sergiu M.; Lu, Xiaoli; Morelli, Alessio; Hesse, Dietrich; Erfurth, Wilfried; Alexe, Marin.

In: Nano Letters, Vol. 13, No. 8, 14.08.2013, p. 3884-3889.

Research output: Contribution to journalArticle

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AU - Stratulat, Sergiu M.

AU - Lu, Xiaoli

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AU - Erfurth, Wilfried

AU - Alexe, Marin

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AB - 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.

KW - heterostructures

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