“…So, it is very difficult to synthesis single‐phase bismuth ferrite nanomaterials. In order to overcome the problems of multiphase formation, numerous synthesis methods such as, sol‐gel technique, low‐temperature polymer‐assisted hydrothermal method, wet chemical solution method, solution combustion method, coprecipitation, citrate precursor, hydrothermal methods, solid‐state reaction method, and liquid‐phase sintering have been employed to prepare single‐phase BFO nanomaterials. Several efforts have also been carried out to suppress the leakage current density by partial substitution of rare earth (Ho, Nd, La etc) or alkaline metal ions (Ca 2+ , Sr 2+ , and Ba 2+ ) at A‐site (Bi‐site).…”