Article ID Journal Published Year Pages File Type
1460469 Ceramics International 2015 5 Pages PDF
Abstract

This study involved an investigation of the structural, electrical, and multiferroic properties of a BiCrO3/BiFeO3 (BCO/BFO) double-layered thin film that was prepared on a Pt(1 1 1)/Ti/SiO2/Si(1 0 0) substrate by using a chemical solution deposition method. X-ray diffraction and Raman spectroscopy studies revealed the formation of tetragonal and rhombohedral structures for the BCO/BFO double-layered thin film without any detectable secondary phases. A saturated ferroelectric hysteresis loop with a remnant polarization (2Pr) of 37 μC/cm2 and a coercive field (2Ec) of 1004 kV/cm at an applied electric field of 1154 kV/cm and a ferromagnetic hysteresis loop with a 2Mr value of 0.044 emu/cm2 and a 2Hc value of 276 Oe at a magnetic field of 10 kOe were observed for the BCO/BFO double-layered thin film at room temperature. The leakage current density of the BCO/BFO double-layered thin film was 2.88×10−4 A/cm2 at an external electric field of 100 kV/cm. The enhanced multiferroic properties observed for the BiCrO3/BiFeO3 thin film correlated with its net effects, such as a decrease in the oxygen vacancy density, a stabilization of the perovskite structure, and small changes in the lattice parameter caused by compressive strain resulting from the coupling of the BiFeO3 and BiCrO3 layers.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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