RETRACTED: Preparation and dielectric properties of BaTiO3/epoxy nanocomposites for embedded capacitor application

Enhanced dielectric properties in poly(vinylidene fluoride) composites by nanosized Ba(Fe 0.5 Nb 0.5 )O 3 powders

“…permittivity and dielectric loss of the nano-BFN/PVDF composites with various volume fractions of nano-BFN powders at room temperature. It is observed that both the dielectric permittivity and dielectric loss of composites increase with increasing concentrations of nano-BFN fillers, which is in agreement with the results of other ceramic/polymer composites [23,24]. As the concentration of nano-BFN fillers is increased to 20, 30, 40, 50 and 60 vol.%, the values of ε 0 at 100 Hz increase to 25, 40, 59, 76, 93, respectively.…”

“…The dielectric loss of nano-BFN/PVDF composites sharply increases with increasing temperature from 25 C to 120 C and reaches maximum in the range of 120 Ce140 C. There is an obvious relaxation peak region from 110 C to 140 C as shown in Fig. 5(b), which is mainly attributed to the glass transition of the amorphous phase of PVDF [24]. The dielectric properties of the composites are determined by the charge distribution and also by the statistical thermal motion of PVDF polar groups [28].…”

“…2. The phenomenon of decreasing with frequency could be caused by the fact that the interfacial polarization and dipolar polarization at the inner structure of composites could not catch up the variation of frequency [24]. The dielectric loss of all samples decreases in the frequency range from 10 2 to 10 4 Hz, and then increases substantially over 10 4 Hz.…”

Dielectric permittivity calculation of composites based on electrospun barium titanate fibers

“…Several dielectric composites have been proposed by using BaTiO 3 particles as filler and a thermoplastic [5][6][7][8][9][10][11] or thermosetting [12,18] polymer as matrix. Composites can be prepared in many different ways, leading to a large variety of morphologies, which strongly influence the macroscopic behavior [19].…”

Electrical and magnetic properties of 0–3 Ba(Fe1∕2Nb1∕2)O3/PVDF composites

“…In addition, tailoring of their properties can be done as per the requirement by changing the proportions of the constituents. Recently, a large number of ceramic/polymer-based 0-3 composites have been fabricated and studied with different aims such as: BaTiO 3 /PVDF, [6][7][8][9] 11 for embedded capacitor applications and to understand the carrier transport mechanism; Ba 0:5 Sr 0:5 TiO 3 /P(VDF-CTFE) 12 for energy storage applications; (Bi 0:5 Na 0:5 Þ 0:94 Ba 0:06 TiO 3 /P(VDFTrFE) 13 to view the combined effect of segmental chain relaxation in polymer phase and dipole relaxation in ceramic phase; BCT-BZT/P(VDF-TrFE) 14 and (Bi 0:5 Na 0:5 Þ 0:94 Ba 0:06 -TiO 3 /PVDF 15 for piezoelectric, pyroelectric applications; Pb(Zr,Ti)O 3 /PVDF 16 toward utilization of dielectric, ferroelectric, piezoelectric, pyroelectric, electrooptic and superconducting properties in micro-devices; CaCu 3 [22][23][24][25][26][27][28] while polyvenylidene fluoride (PVDF) is one of the most effective low-cost polymers having low complex permittivity and low thermal conductivity. It would not be out of place to mention here that both the constituents of the above-referred ceramic/polymer composite are environment-friendly.…”