Preparation and Dielectric Behaviour of Magnetoelectric HoMnO3-BaTiO3 Composites
In this work, we report the magnetoelectric HoMnO3-BaTiO3 composites prepared by the solid-state reaction method. X-ray diffraction and scanning electron microscopy were used to characterize the phase composition and structures of the composites. The material/impedance analyzer was used to investigate the dielectric properties of the composites. It is shown that the composite consists of both ferroelectric ordering and magnetic ordering. The addition of BaTiO3 decreases the antiferromagnetic phase transformation temperature of the HoMnO3, indicating that there exists the coupling interaction between BaTiO3 and HoMnO3 phases.
J.K. Kim, D.Z. Wo, L.M. Zhou, H.T. Huang, K.T. Lau and M. Wang
Y.J. Wu et al., "Preparation and Dielectric Behaviour of Magnetoelectric HoMnO3-BaTiO3 Composites", Key Engineering Materials, Vols. 334-335, pp. 1021-1024, 2007