The role of structural order–disorder for visible intense photoluminescence in the BaZr0.5Ti0.5O3 thin films

Influence of Dopants, Temperature and Atmosphere of Sintered on the Microstructure and Behavior of Lead Free Ceramics

“…It can be assumed that particle charge compensation takes place at a nearestneighbor barium cluster site in the [BaO 12 ], because the resulting coulomb interaction is the most important driving force. This assignment is in accordance with first-principles calculation (Anicete- Santos et Al., 2005 VO ] defect dipole complexes the main cause of electrical properties in the ceramic. Hence, charge transport will be considerably hindered.…”

Structure and optical properties of [Ba1–xY2x/3](Zr0.25Ti0.75)O3 powders

“…The highest E gap value was verified for the powders with Y content up to x ¼ 0.025, suggesting a different conformation or low concentration of energy states within the band gap. It is possible to conclude that these energy states are basically composed of O 2p orbitals (near the VB) as well as Ti 3d orbitals, Y and Zr 4d orbitals (below the CB) [78]. The origin of these Fig.…”

Visible PL Phenomenon at Room Temperature in Disordered Structure of SrWO4 Powder

“…Orhan et al [19][20][21][22], Longo et al [23], and Anicete-Santos et al [24] performed experimental and theoretical studies of the PL property in materials such as perovskitelike titanates and sheelite tungstates. The authors developed ab initio periodic models representing crystalline and order-disordered structures of Pb(Zr 0.2 Ti 0.8 )O 3 , BaTiO 3 , Ba 0.5 Sr 0.5 TiO 3 , and SrWO 4 .…”