The dielectric and ferroelectric properties of tungsten bronze ferroelectric (K0.5Na0.5)0.1(Sr0.5Ba0.5)0.95Nb2O6 ceramic

The dielectric and ferroelectric properties of tungsten bronze ferroelectric ceramic, which has an edge over single crystals and thin films because of its low cost, ease of fabrication, large size, and isotropic properties, were analyzed. A low-temperature combustion synthesis process (LCS) was used to prepare polycrystalline sample and the starting materials include niobium compounds, citric acid, and ammonia solution. The disorder or diffusivity degree in the tungsten bronze ferroelectric compound was calculated by employing a modified empirical relation, which described the diffuseness of the ferroelectric phase transition. The XRD analysis of the sample showed that the compound has a typical tetragonal structure at room temperature. The samples projected a diffuse ferroelectric transition behavior and the diffusivity of the composition was found to be 1.81. The results shows that the compound has a high polarization remanent and low coercive field than the SBN ceramic.