Multiferroic behavior on nanometric La$_{2/3}$Ca$_{1/3}$MnO$_{3}$ / BaTiO$_{3}$ bilayers

We have deposited bilayers of the FM La$_{2/3}$Ca$_{1/3}$MnO$_{3}$ and FE BaTiO$_{3}$ as a route to design systems with artificial magnetoelectric coupling on LCMO/BTO/Nb:STO system. We maintain a fixed magnetic layer thickness (t$_{\mathrm{LCMO}} =$ 48 nm) and varying the thickness of the ferroelectric layer (t$_{\mathrm{BTO}} =$ 20, 50, 100 nm). We analyze the influence of the thickness ratio (t$_{\mathrm{BTO}}$/ t$_{\mathrm{LCMO}})$ in electrical and magnetic properties of manganite. From X-ray diffraction analysis we observed that the samples grew textured. Magnetization and transport measurements indicate a possible multiferroic behavior in the bilayer. We found an increase in the Curie and metal-insulator transition temperature in the bilayer in comparison with those for LCMO (48nm)/STO. Hysteresis loops on bilayers show ferromagnetic behavior. This work has been supported by the ``El Patrimonio Aut\'{o}nomo Fondo Nacional de Financiamiento para CT{\&}I FJC'' Colciencias-CENM Research Projects: No. 1106-48-925531 and CI7917-CC 10510 contract 0002-2013 COLCIENCIAS-UNIVALLE.