Dielectric and tunable properties of barium strontium titanate ceramics under the stresses

Effects of SrO–B2O3–SiO2 glass additive on densification and energy storage properties of Ba0.4Sr0.6TiO3 ceramics

“…However, the current dielectric materials cannot satisfy these two requirements. Among various dielectric materials, barium strontium titanate (BST) based ceramics have been widely investigated for energy storage capacitors because of their extremely high dielectric constant and relatively low dielectric loss [6][7][8][9]. In accordance with the energy density equation for nonlinear dielectrics [1], it can be found the high energy density in the dielectrics relies more on the high E b .…”

Influence of buffer layer on structural, electrical and mechanical properties of PZT/NiTi thin film heterostructures

“…It could be due to the presence of an internal bias field between NiTi and PZT films induced by the interdiffusion at the interface or entrapment of space charges, e.g., oxygen vacancies [50,51]. The e-E curves obtained for sample P 3 and P 4 were well defined symmetric loops with butterfly shape that correspond to the reversal polarization switching behavior in the ferroelectric films and gives further evidence of the enhancement of the ferroelectricity [52,53]. Furthermore, a higher dielectric tunability (defined as [e r(T,0) À e r(T,E) ]/ e r(T,0) , where e r(T,0) and e r(T,E) are the dielectric constant at zero electric field and applied electric field, respectively) was also observed sample P 3 and P 4 as compared with sample P 2 , as shown in Table 2.…”

Energy storage properties in Ba 0.4 Sr 0.6 TiO 3 ceramics with addition of semi-conductive BaO–B 2 O 3 –SiO 2 –Na 2 CO 3 –K 2 CO 3 glass

“…The aforementioned capacitors are always conducted at fulfilling a steady energy accumulation accompanied with an ultrafast energy release speed, typically in few microseconds, resulting in the delivery of a large amount of instantaneous power over a short period of time [4,5]. In recent years, among various dielectric materials, barium strontium titanate Ba x Sr 1Àx TiO 3 -based ceramics, as a good kind of pulse capacitor, have been widely investigated [6,7]. These materials play a critical role in energy storage capacitors because of their extremely high dielectric constant permittivity (corresponding to a high capacitance value) as well as relatively low dielectric loss [8,9].…”