Functional Properties of the (1-x)BiFeO₃—xBaTiO₃Solid Solutions

Preparation and properties of (1−x)BiFeO3–xBaTiO3 multiferroic ceramics

“…1(b). The expansion of the lattice parameters with the increase of the BaTiO 3 content in (1 − x)BiFeO 3 -xBaTiO 3 system was also pointed out earlier [29] SEM investigation performed on the surface of the BiFeO 3 pellet sintered at 800 • C/1 h pointed out a heterogeneous microstructure with bimodal grain size distribution, consisting from large grains with equivalent average size of ∼25 m and small grains of 3-4 m ( Fig. 2(a)).…”

“…0.25 and 0.30) with good purity and homogeneity were prepared by mixed oxides method following a two-step sintering [21]. This method allowed not only to obtain a higher purity of the perovskite phase even for x = 0, but also to get rather good dielectric properties at room temperatures, with permittivities of around (180-250) and losses below 3% at frequencies in the range of (1-10 6 ) Hz [29]. A detailed study of the functional properties of (1 − x)BiFeO 3 -xBaTiO 3 solid solutions was not reported.…”

Effect of Ba ions substitution on multiferroic properties of BiFeO3 perovskite

“…A coercive field (H C ) of 0.907 kOe for x=0.1, 1.907 kOe for x=0.2 and1.837 kOe for x=0.3 is observed respectively. Compared with some doped BiFeO 3 compounds [12,13,20,21,24,25], these Ba doped BiFeO 3 ceramics exhibit larger magnetization at room temperature. This spontaneous magnetization of Ba doped BiFeO 3 ceramics might originate from the rhombohedral distorted perovskite structure (space group R3c) of BiFeO 3 , in which both ferroelectric atomic displacements and a weak ferromagnetic ordering might be allowed due to the canting spin arrangement [4].…”

Phase transitions in the (BaTiO3) /(BiFeO3)1− composite ceramics: Dielectric studies

“…2 shows the X-ray pattern for x=0.5. As it was obtained recently [22][23][24], BaTiO 3 under study. The experimental setup is described in more details in [25].…”