Electrical properties of La_(0.6)Ca_(0.4)MnO3-Bi_(3.4)Nd_(0.6)Ti3O_(12) thin films derived by a sol-gel process

摘要

Magnetoelectric (ME) xLa_(0.6)Ca_(0.4)MnO3-Bi_(3.4)Nd_(0.6)Ti3O_(12) (LCMO-BNT) composite thin films have been prepared by a sol-gel process and spin-coating technique. The effects of LCMO content on the micro-structure, leakage current density, ferroelectric properties, fatigue endurance and ME voltage coefficient of LCMO-BNT thin films derived by sol-gel method were studied. It was found that the composite thin films have better fatigue endurance properties and lower leakage current densities compared with pure BNT thin films, as well as large ME voltage coefficients.