摘要：The new Bi 0.5 Na 0.5 TiO 3 -SrMnO 3-δ solid solution materials were fabricated via sol-gel method. The random incorporation of Sr and Mn cations into host lattice of Bi 0.5 Na 0.5 TiO 3 resulted in structural distortion and influenced on the reduction of the optical band gap from 3.07 eV to 1.81 eV for pure Bi 0.5 Na 0.5 TiO 3 and 9 mol% SrMnO 3-δ solid solution into Bi 0.5 Na 0.5 TiO 3 . The magnetic properties of Bi 0.5 Na 0.5 TiO 3 materials at room temperature were tuned via compensation of diamagnetic material with weak-ferromagnetism to ferromagnetism with low SrMnO 3-δ content and combination of paramagnetism/antiferromagnetism-like and ferromagnetism with higher SrMnO 3-δ content solid solution in Bi 0.5 Na 0.5 TiO 3 . The tunable magnetic and optical properties of lead-free ferroelectric materials was promising for their application to green electronic devices.
