Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8036068 | Thin Solid Films | 2013 | 4 Pages |
Abstract
La0.7Sr0.3MnO3/BaTiO3 bilayer films were grown on SrTiO3 (001) substrates buffered with SrRuO3 films as the bottom electrodes by pulsed laser deposition. The quality of the La0.7Sr0.3MnO3/BaTiO3/SrRuO3/SrTiO3 films was analyzed by means of transmission electron microscopy and atomic force microscopy. It is found that each layer grows epitaxially on its bottom layer. La0.7Sr0.3MnO3/BaTiO3 bilayer films exhibit typical ferroelectric hysteresis loops for BaTiO3 films with the remnant polarization of 16.2 μC/cm2 at driven field of 278 kV/cm and ferromagnetic hysteresis loops for La0.7Sr0.3MnO3 film with the coercive field of about 4 kA/m and the saturation magnetization of 205 kA/m at 295 K. The effect of ferroelectric BaTiO3 layer poling on the resistivity of ferromagnetic La0.7Sr0.3MnO3 layer was also investigated.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
X.W. Wang, Y.Q. Zhang, X. Wang, Z.J. Wang, Y.L. Zhu, Z.D. Zhang,