Structural and Magnetoelectric Behavior of Lanthanum Manganite‐Based Multiferroic Heterostructures

The effect of fabrication method on the structure of (100 − x ) wt% BaTiO ₃ + x wt% La _0.7 Ba _0.3 MnO ₃ ( BT + BLM ) and (100 − x ) wt% Na, Bi, Sr‐doped PZT + x wt% La _0.65 Pb _0.35 MnO ₃ ( PZTNB ‐1 + PLM ) magnetoelectric ceramics was studied. Profound interdiffusion of two interacting phases occurs in nearly all cases. The BT + BLM and PZTNB ‐1 + PLM ceramics exhibit low piezoelectric parameters even with small manganite contents (10–20 wt%). The increased content of the magnetostrictive phase complicates the polarization process due to the high conductivity of La _0.7 Ba _0.3 MnO ₃ and La _0.65 Pb _0.35 MnO ₃ . Doping of BaTiO ₃ and PZTNB ‐1 with small additions of manganite components affects piezoelectric properties, thereby lowering efficiency of the resulting material.