Influence of LaNiO3 Buffer Layer on the Magnetic Properties of Thin Perovskite Manganites

The influence of a thick epitaxial buffer layer on the magnetic properties of thin perovskite manganite films was studied. The deposition of a thick LaNiO
₃
buffer on single-crystal (001) LaAlO
₃
substrate shifted the magnetic anisotropy of a thin La
_0.7
Sr
_0.3
MnO
₃
toward the sample plane, while maintaining its saturation magnetization. Possible origins for such an effect are discussed. This paper highlights the sensitivity of magnetic properties in manganites on the presence of buffer layers.