Hydrothermal synthesis of nanosized BaTiO powders and dielectric properties of corresponding ceramics

Hydrothermal synthesis and properties of NiFe2O4@BaTiO3composites with well-matched interface

“…The particles are spherical and mostly not aggregated. They have a narrow size distribution of 200-300 nm, similar to previous reports [40,43,46]. Figure 3(b) shows a typical TEM image of the precursor NiFe 2 O 4 nanoparticles.…”

“…The polar order of BaTiO 3 is strongly depressed as judged from the absence of the 305 cm −1 peak, indicating symmetry with the TiO 6 octahedra. The 810 cm −1 peak is specific for cubic BaTiO 3 [42,43]. Its presence in figure 2 implies that the cubic phase appears in the pure BaTiO 3 particles because of their composite structure consisting of the inner tetragonal core, the cubic shell, and a gradient lattice-strain layer in between [39].…”

Thickness dependence on structural, dielectric and AC conduction studies of vacuum evaporated Sr doped BaTiO3 thin films

“…Bellan). [5] and the solid state reaction of mixed oxide route [6]. Among this method wet chemical method is a promising technique that offers relative low cost, uniform size and homogenous particles.…”

Metal Oxide Nanoparticles

“…The particle size of the nanocrystalline MgO was found to be 11 nm compared with 61 nm for the unpinned material, indicating that the pinning phase was still very effective. [60] Other soft chemistry techniques that have been used to produce nanocrystalline powders including hydrothermal methods [61,62] and some of these have been reviewed in a recent paper with particular reference to onedimensional nanostructures. [63] In general, the above methods are used for the production of nanocrystalline powders which may be further compacted via techniques such as hot-pressing [64,65] or magnetic pulsed compaction [66,67] or spark plasma sintering.…”