Abstract
Ferroelectric properties of Dy and Mn codoped BiFeO3, (Bi1‐xDyx)(Fe1‐xMnx)O3 (BDFM‐x, x = 0, 0.02, 0.04, 0.06, 0.08, and 0.10), thin films were investigated. Improved ferroelectric properties were observed in the codoped thin film capacitors. Among them, BDFM‐0.08 thin film capacitor exhibited the best properties. The remnant polarization (2Pr) and coercive electric field (2Ec) of the BDFM‐0.08 thin film capacitor were 96 μC/cm2 and 695 kV/cm at an applied electric field of 1061 kV/cm, respectively. The leakage current density of the BDFM‐0.08 thin film capacitor was 8.3 × 10−5 A/cm2 at 400 kV/cm.
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