Enhanced magnetoelectric coefficient (α) in the modified BiFeO3–PbTiO3 system with large La substitution

Magnetoelectric coupling coefficient (α) values of 0.88mV∕cm∕Oe at 200Oe and magnetocapacitive effects are reported in solid-solution BF–LF–PT with large La substitution (50:50 in BF). Enhancement of magnetic, dielectric, and ferroelectric properties is also observed. The solid solution shows relaxor behavior with large permittivity values (∼30000), large remnant polarization (∼61μC∕cm2), and symmetric but nonsaturating M-H loop with Mr∼0.25emu∕g.