The upper Manganese doping limit and its effects on physical properties of lead-free Bi0.5Na0.5TiO3 ceramics

Structure, optical and magnetic properties of new Bi0.5Na0.5TiO3- SrMnO3−δ solid solution materials

“…The addition of the vibration modes at approximately 670 cm −1 was obtained for SrMnO 3−δ -modified samples, and the intensity of peak increased with the increase of increasing SrMnO 3−δ concentration. The appearance of new vibration modes was suggested for Mn substitution of Ti site to induce the MnO 6 cluster vibration 43,44 . The band observed at approximately 528 cm −1 was relative to the breathing modes of TiO 6 octahedral structure, which shifted to a high wavenumber for 5 mol% SrMnO 3−δ dopants then shifted back to low wavenumber for 9 mol% SrMnO 3−δ dopants.…”

Luminescence and electrical properties of Eu‐modified Bi0.5Na0.5TiO3 multifunctional ceramics

“…The most widely used piezoelectric material is PbTiO 3 ‐PbZrO 3 (PZT)‐based three‐component system, but it contains toxic Pb that is harmful to the environment. Many countries have desired to use lead‐free materials for environment protection . So, it is necessary and urgent to develop lead‐free piezoelectric ceramics with excellent piezoelectric properties …”

“…Many countries have desired to use leadfree materials for environment protection. [8][9][10][11][12] So, it is necessary and urgent to develop lead-free piezoelectric ceramics with excellent piezoelectric properties. [13][14][15] Dielectric, ferroelectric, and piezoelectric properties of perovskite-type ceramics are believed to be superior candidates for lead-free piezoelectric materials to reduce environmental damages.…”