Magnetocapacitance in BaTiO3-CoFe2O4 nanocomposites

• Published in: Thin solid films Vol. 518; no. 16; pp. 4634 - 4636
• Main Authors: FINA, I, DIX, N, FABREGA, L, SANCHEZ, F, FONTCUBERTA, J
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Amsterdam Elsevier 01-06-2010
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Epitaxial growth; Exact sciences and technology; Ferroelectric materials; Ferromagnetic materials; Hysteresis loops; Joining; Magnetic fields; Magnetic properties and materials; Magnetic properties of monolayers and thin films; Magnetic properties of surface, thin films and multilayers; Nanocomposites; Origins; Physics; Thin films; Magnetocapacitance; Epitaxial layers; Barium titanate; Epitaxy; Ferromagnetic materials; Barium titanates; Multiferroic; Hysteresis loop; Cobalt Iron Oxides Mixed; Ferroelectric materials; Nanocomposites; Cobalt ferrite; Strontium titanates; Capacitance; Niobium additions; Nanocomposite; Radiofrequency sputtering; Ferroelectric hysteresis; Magnetoelectric
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2009.12.048

We report on the magnetoelectric characterization of epitaxial CoFe2O4-BaTiO3 nanocomposites grown by rf sputtering on Nb-doped SrTiO3 (001). Multiferroicity of the material is corroborated with both, ferroelectric and ferromagnetic hysteresis loops. Magnetoelectric coupling is investigated via magnetocapacitance measurements; a change of the capacitance of about 2% is observed for an applied magnetic field of 8T. The possible origins of this magnetocapacitance are discussed.