Tunable Multiferroic Properties in Nanocomposite PbTiO₃-CoFe₂O₄ Epitaxial Thin Films

Author(s)

M. Murakami
K.-S. Chang
M. A. Aronova
C.-L. Lin
Ming H. Yu
Jason R. Hattrick-Simpers, University of South Carolina - ColumbiaFollow
M. Wuttig
I. Takeuchi
C. Gao
B. Hu
S. E. Lofland
L. A. Knauss
L. A. Bendersky

Document Type

Article

Abstract

We report on the synthesis of PbTiO₃–CoFe₂O₄ multiferroic nanocomposites and continuous tuning of their ferroelectric and magnetic properties as a function of the average composition on thin-film composition spreads. The highest dielectric constant and nonlinear dielectric signal was observed at (PbTiO₃)₈₅–(CoFe₂O₄)₁₅, where robust magnetism was also observed. Transmission electron microscopy revealed a pancake-shaped epitaxial nanostructure of PbTiO₃ on the order of 30 nm embedded in the matrix of CoFe₂O₄ at this composition. Composition dependent ferroics properties observed here indicate that there is considerable interdiffusion of cations into each other.

Publication Info

Published in Applied Physics Letters, Volume 87, Issue 11, 2005, pages #112901-.

Rights

©Applied Physics Letters 2005, AIP (American Institute of Physics).

Murakami, M., Chang, K.-S., Aronova, M. A., Lin, C.-L., Yu, M. H., Hattrick-Simpers, J., Wuttig, M., Takeuchi, I., Gao, C., Hu, B., Lofland, S. E., Knauss, L. A., & Bendersky, L. A. (2005). Tunable Multiferroic Properties in Nanocomposite PbTiO₃-CoFe₂O₄ Epitaxial Thin Films. Applied Physics Letters, 87 (11), #112901. http://dx.doi.org/10.1063/1.2041825