Influence of antiferromagnetic ordering on ferroelectric polarization switching of YMnO3 epitaxial thin films

Kazuhiro Maeda; Takeshi Yoshimura; Norifumi Fujimura

doi:10.1109/TUFFC.2007.592

Influence of antiferromagnetic ordering on ferroelectric polarization switching of YMnO3 epitaxial thin films

IEEE Trans Ultrason Ferroelectr Freq Control. 2007 Dec;54(12):2641-4. doi: 10.1109/TUFFC.2007.592.

Authors

Kazuhiro Maeda¹, Takeshi Yoshimura, Norifumi Fujimura

Affiliation

¹ Department of Physics and Electronics,Graduate School of Engineering Osaka Prefecture University, Sakai, Osaka 599-8531, Japan. m-kazoo@pe.osakafu-u.ac.jp

PMID: 18276570
DOI: 10.1109/TUFFC.2007.592

Abstract

In this study, the switching behavior of ferroelectric polarization of (0001) YMnO(3) epitaxial films at around Néel temperature was investigated. From the experimental results of the frequency and temperature dependences of coercive electric filed (E(c)) obtained from polarization-electric field (P-E) hysteresis loop, the crosscorrelation phenomena between magnetics and ferroelectrics are discussed in detail. The P-E hysteresis loops of the films were measured in the frequency range from 1 Hz to 10 kHz, and the temperature was varied from 10 to 150 K. Frequency dependence of Ec accorded with Ishibashi-Orihara's theory at the measured temperature range. However, temperature dependence of E(c) disagreed with Devonshire's theory below 120 K, which is close to the Néeel temperature of the YMnO(3) epitaxial film. disagreed with Devonshire's theory below 120 K, which is close to the Neel temperature of the YMnO(3) epitaxial film.