Abstract
BiFeO3 (BFO) is an interesting material due to the coexistence of magnetic and ferroelectric order at room temperature. Moreover, mixed manganese perovskite oxides like ferromagnetic La2/3Ca1/3MnO3 (LCMO-F) present remarkable properties, like colossal magnetoresistance and non-volatile memory. Bilayers of BFO/LCMO-F and LCMO-F/BFO were grown on (100) SrTiO3 (STO) substrates. LCMO-F films were deposited by DC sputtering and BFO by RF magnetron sputtering technique at high-oxygen pressures. Samples were structurally characterized by x-ray diffractometry. Electrical properties were evaluated by resistivity measurements as function of temperature, showing how the transition temperature of manganite is affected by the presence of the BFO layer. Magnetic characterizations were carried out by magnetization measurements as function of temperature and magnetic field. BFO/LCMO-F/STO bilayer showed a higher Curie temperature than LCMO-F layers grown by similar parameters. Magnetic hysteresis curves for LCMO-F/BFO/STO bilayers gave us indication of the existence of exchange bias effect with a Hex of 200 Oe after field cooling at 1 T; we can also conclude that this bilayer configuration offers posibilities to obtain bilayers exhibiting this polarization effect.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
