Magnetoelectric coupling in La0.6Ca0.4MnO3-Bi0.6Nd0.4TiO3 composite thin films derived by a chemical solution deposition method

摘要

Magnetoelectric (ME) xLa0.6Ca0.4MnO3-(1-x)Bi0.6Nd0.4TiO3 composite thin films with x = 0.3, 0.4, and 0.5 were fabricated on Pt/Ti/SiO2/Si(100) substrates by a chemical solution deposition method. The well-defined ferroelectric loops are observed. The Pr values are 11.2, 12.8, and 13.9 μC/cm2 under the condition of about 350 kV/cm electric field for the composite films with x = 0.3, 0.4, and 0.5. The composite films exhibit typical magnetic hysteresis loops, as well as remnant magnetizations. ME effect which is dependent on Hbias is observed. The results show that the films exhibit both good ferroelectric and magnetic properties, as well as a ME effect.