“…[3,[7][8][9][10] BiFeO 3 has attracted considerable interest as a multiferroic material because it is lead-free and it exhibits ferroelectric and magnetic behaviors at room temperature. [11][12][13][14][15][16] Nevertheless, some critical issues of BiFeO 3 need to be addressed before it can be used in practical applications. That is, a high leakage current, a low ferroelectric remnant polarization, and a weak magnetization.…”