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Capacitance Tunability of Magneto-electric Material:Cr2O3 using Ferromagnetic (La,Sr)MnO3 Electrode

Published online by Cambridge University Press:  26 February 2011

Takeshi Yokota ,
Takaaki Kuribayashi ,
Takeshi Shundo ,
Keita Hattori ,
Yasutoshi Sakakibara  and
Manabu Gomi
Takeshi Yokota
Affiliation:
yokota.takeshi@nitech.ac.jp, Nagoya Institute of Technology, Materials Science and Engineering, Gokiso-cho, Showa-ku, Nagoya, 4668555, Japan, +81-52-735-5290, +81-52-735-5290
Takaaki Kuribayashi
Affiliation:
18415059@stn.nitech.ac.jp, Nagoya Institute of Technology, Graduate School of Engineering, Gokiso-cho, Showa-ku, Nagoya, 4668555, Japan
Takeshi Shundo
Affiliation:
takeshi-xxx@u01.gate01.com, Nagoya Institute of Technology, Graduate School of Engineering, Gokiso-cho, Showa-ku, Nagoya, 4668555, Japan
Keita Hattori
Affiliation:
hattorikeita@yahoo.co.jp, Nagoya Institute of Technology, Graduate School of Engineering, Gokiso-cho, Showa-ku, Nagoya, 4668555, Japan
Yasutoshi Sakakibara
Affiliation:
ysts_ceo2la2o3@yahoo.co.jp, Nagoya Institute of Technology, Graduate School of Engineering, Gokiso-cho, Showa-ku, Nagoya, 4668555, Japan
Manabu Gomi
Affiliation:
gomi@nitech.ac.jp, Nagoya Institute of Technology, Graduate School of Engineering, Gokiso-cho, Showa-ku, Nagoya, 4668555, Japan
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Abstract

We have investigated the dielectric properties of the Cr2O3 films using ferromagnetic electrode; (La0.66, Sr0.33)MnO3. The relationships between those properties and their crystallinity also have been investigated. The well crystallized sample was exhibited low leakage current density. Although all samples show capacitance decreasing by applying voltages, the decreasing ratio was the largest on the sample with lowest leakage current density. Since the Cr2O3 film with same leakage current density as that sample using non-magnetic electrode didn't show any capacitance changes by applying voltages, it is suggested that the dielectric properties of Cr2O3 film might be affected by the ferromagnetic film.

Keywords

dielectric propertiesmagnetic propertiesthin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 966: Symposium T – Ferroelectrics and Multiferroics , 2006 , 0966-T03-02
Copyright
Copyright © Materials Research Society 2007

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References

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