Magnetoelectric properties of 0.2CoFe2O4-0.8BaTiO3 composite prepared by organic method

Author

Etier, Morad ; Gao, Yaling ; Shvartsman, Vladimir V. ; Lupascu, Doru C. ; Landers, Joachim ; Wende, Heiko

Author_Institution

Inst. for Mater. Sci., Univ. of Duisburg-Essen, Essen, Germany

fYear

2012

fDate

9-13 July 2012

Firstpage

1

Lastpage

4

Abstract

We have successfully synthesized CoFe₂O₄/BaTiO₃ composite nanoparticles with core-shell structure using a new organosol crystallization method. The weight fraction of the ferroelectric and the ferrimagnetic phase was 80% and 20%, respectively. The nanopowders were sintered to form a ceramic composite. The ceramics exhibits the magnetoelectric effect. The value of the converse magnetoelectric coefficient α_c measured by a modified SQUID susceptometer reaches 4.4·10^-12 s·m^-1 at the magnetic field μ₀H_dc = 0.15 T and T = 285 K.

Keywords

barium compounds; cobalt compounds; ferrimagnetic materials; ferroelectric ceramics; ferroelectricity; magnetoelectric effects; nanocomposites; nanofabrication; nanoparticles; sintering; CoFe₂O₄-BaTiO₃; SQUID susceptometry; ceramic composites; composite nanoparticles; converse magnetoelectric coefficient; core-shell structure; ferrimagnetic phase; ferroelectric property; magnetic field; magnetic flux density 0.15 T; magnetoelectric properties; nanopowders; organosol crystallization method; sintering; temperature 285 K; Barium; Ceramics; Magnetic cores; Magnetic field measurement; Magnetoelectric effects; Magnetostriction; Powders; Mutliferroics; composite; magnetoelectric;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp

Conference_Location

Aveiro

Print_ISBN

978-1-4673-2668-1

Type

conf

DOI

10.1109/ISAF.2012.6297820

Filename

6297820