Magnetic properties of Bi(Fe1-x M (x) )O-3 (M = Mn, Ti)

The magnetic properties of Bi(Fe1 - x M (x) )O-3(M = Mn, Ti) solid solutions have been studied in magnetic fields of up to 11.2 x 10(3) kA/m, and the composition stability range of the R3c ferroelectric phase has been determined. The results indicate that partial Ti4+ substitution for Fe3+ leads to a transition from a modulated antiferromagnetic state to a homogeneous weakly ferromagnetic ferroelectric state (x = 0.08), whereas the Bi(Fe (1-x) (3+) Mn (x) (3+) )O-3 solid solutions do not exhibit weak ferromagnetism. Charge compensation in is assumed to be ensured by cation vacancies.