Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (3): 291-295.DOI: 10.3724/SP.J.1077.2012.00291

• Research Paper • Previous Articles     Next Articles

Preparation and Strong Magnetoelectric Effect of Multiferroic BaTiO3/La2/3Sr1/3MnO3 Composite Film

LI Ting-Xian1, ZHANG Ming1, HU Zhou1, LI Kuo-She2, YU Dun-Bo2, YAN Hui1   

  1. (1. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China; 2. National Engineering Research Central for Rare Earth Materials, General Research Institute for Nonferrous Metals, Beijing 100088, China)
  • Received:2011-03-15 Revised:2011-05-01 Published:2012-03-20 Online:2012-02-16
  • About author:LI Ting-Xian. E-mail: wxlltx@126.com
  • Supported by:

    National Natural Science Foundation of China(51002013, 1174021); Natural Science Foundation of Beijing Municipality (2122007)

Abstract: Using pulsed laser deposition technique, the multiferroic BaTiO3/La2/3Sr1/3MnO3 composite bilayer films were epitaxially prepared on (001) oriented LaAlO3 single crystal substrate. The measurements of electric and magnetic properties showed that the composite structure possessed superior ferromagnetic and ferroelectric properties, its relative dielectric constant and ferromagnetic curie temperature were 263 and 317 K, respectively. The magnetoelectric voltage coefficient for the bilayer films at room temperature was around 176 mV/A, which was at least one order of magnitude higher than the previous reported in the same structures. The corresponding interface coupling parameter k was about 0.68, which indicated a better interface coupling between ferromagnetic and ferroelectric layers.

Key words: magnetoelectric effect, ferroelectric/ferromagnetic bilayer heterostructure, pulsed laser deposition, interface coupling parameter

CLC Number: