Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-25T15:42:39.923Z Has data issue: false hasContentIssue false
  • English
  • Français

Synthesis and Characterization of BaTiO3/CoFe2O4 thin films

Published online by Cambridge University Press:  12 July 2011

Helen R. C. S. Andrade ,
Luciana M. Seara  and
Nelcy D. S. Mohallem
Helen R. C. S. Andrade
Affiliation:
Laboratory of Nanostructured Materials, DQ/UFMG, Belo Horizonte-MG, Brazil
Luciana M. Seara
Affiliation:
Microscopy Centre, UFMG, Belo Horizonte-MG, Brazil
Nelcy D. S. Mohallem*
Affiliation:
Laboratory of Nanostructured Materials, DQ/UFMG, Belo Horizonte-MG, Brazil Microscopy Centre, UFMG, Belo Horizonte-MG, Brazil
*
*[email protected]
Get access

Abstract

Nanocomposites formed by ferrimagnetic and ferroelectric materials are multiferroic material in which magnetoelectric coupling occurs via piezoelectricity and magnetostriction phenomena. These nanocomposites have a variety of applications in tunable microwave devices using electric control of spin wave propagation or new magnetic memories in which the magnetic response is controlled by electric field.

In this work, transparent and homogeneous thin films of barium titanate interleaved with cobalt ferrite were prepared by sol–gel method using dip-coating process. Films of pure barium titanate and cobalt ferrite were also prepared for comparison. The nanocomposite films were deposited onto clean quartz substrates, where a coating of each material was deposited interleaved, where the cobalt ferrite film formed the last layer. The films were dried in air after each dipping and heated at 900 oC for 1 hour to convert the amorphous films into crystalline ones. The samples were characterized by low angle X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM) and UV-Vis spectroscopy.

Keywords

sol-gelmagnetic propertiesferroelectric
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1368: Symposium WW – Multiferroic, Ferroelectric, and Functional Materials, Interfaces and Heterostructures , 2011 , mrss11-1368-ww08-18
Copyright
Copyright © Materials Research Society 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Fina, I., Dix, N., Laukhin, V., Fàbrega, L., Sánchez, F. and Fontcuberta, J., Journal of Magnetism and Magnetic Materials 321, 1795 (2009).Google Scholar
2. Liu, G., C- Nan, W., Cai, N. and Lin, Y H, J. Appl. Phys. 95, 2660 (2004).Google Scholar
3. Izyumskaya, N., Alivov, Y. and Morkoç, H., Sciences 34, 89 (2009).Google Scholar
4. Zheng, H., et al., Science 303, 661 (2004).Google Scholar
5. Dix, N., Skumryev, V., Laukhin, V., Fàbrega, L., Sánchez, F. and Fontcuberta, J., Materials Science and Engineering B144, 127 (2007).Google Scholar
6. Zhu, J., Zhou, L. X., Huang, W., Li, Y. Q. and Li, Y. R., J. of Crystal Growth 311, 3300 (2009).Google Scholar
7. Brinker, C. J., The Physics and Chemistry of Sol-Gel Processing, Academic Press, San Diego, 1990.Google Scholar
8. , N. Mohallem, D. S. and Seara, L. M., Applied Surface Science 214, 143 (2003).Google Scholar
9. Mohallem, N. D. S., Epitaxial Oxide Thin Films and Heterostructure, MRS Spring Meeting Proceedings, 341, 379 (1994)Google Scholar