Title :
Effect of strain in LaAlO3/BaTiO3 superlattice
Author :
Tang, Jin-Long ; Xie, Ying-Ying ; Xiong, Jie
Author_Institution :
Lab. of Mater. properties Under Extreme Conditions, Southwest Univ. of Sci. & Technol., Mianyang, China
Abstract :
Ferroelectric superlattices of (LaAlO3)m/(BaTiO3)n (LAOm/BTOn) is used to investigate functional properties of ferroelectric thin films by first-principles method. We find that LAOm/BTOn system are different from the II-IV-type perovskite superlattice systems, when the LAO layer effectively affects the BTO layer lattice atomic and electronic structure. This anomalous indicates that a small period superlattices are useful for improve the ferroelectricity under compressive strain.
Keywords :
ab initio calculations; atomic structure; barium compounds; electronic structure; ferroelectric thin films; lanthanum compounds; superlattices; II-IV-type perovskite superlattice systems; LaAlO3-BaTiO3; atomic structure; compressive strain; electronic structure; ferroelectric superlattices; ferroelectric thin films; first-principles method; Barium; Educational institutions; Epitaxial growth; Lattices; Strain; Substrates; Superlattices; DFT; ferroelectricity; strain; superlattice;
Conference_Titel :
Electronics and Optoelectronics (ICEOE), 2011 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-61284-275-2
DOI :
10.1109/ICEOE.2011.6013055
