Effects of processing methods on dielectric properties of BaTiO3/poly(vinylidene fluoride) nanocomposites

Greatly enhanced dielectric permittivity in poly(vinylidene fluoride)-based polymeric composites induced by Na1/3Ca1/3Bi1/3Cu3Ti4O12 nanoparticles

“…The porosity resulted from high loading would have a great impact on the dielectric properties of the polymer composites. Usually, the dispersion of fillers would play a significant role on dielectric properties of composites and good dispersion is likely to contribute to excellent dielectric properties [1,13]. Accordingly, these results indicate the better performance the NCB-NPs on the microstructure of the polymer composites.…”

“…For practical application in microelectronics, polymeric dielectric materials with high dielectric permittivity (e 0 ), low dielectric loss tangent (tand), mechanical flexibility, low coast, and excellent processing performance as well as compatible with polymers used as support of electronic circuits are highly desired [8][9][10][11]. Poly(vinylidene fluoride) (PVDF) is widely used as a polymer matrix due to its high e 0 of about 10 compared to other polymers [1,[11][12][13][14].…”

“…The common ceramic fillers used are BaTiO 3 [5,13,[15][16][17], (Ba 0.6 Sr 0.4 )TiO 3 [18][19][20], CaCu 3 Ti 4 O 12 (CCTO) [21][22][23], Na 0. 5 Bi 0.5 Cu 3 Ti 4 O 12 [24], and Ba(Fe 0.5 Nb 0.5 )O 3 [25].…”

Greatly enhanced dielectric permittivity in La1.7Sr0.3NiO4/poly(vinylidene fluoride) nanocomposites that retained a low loss tangent

“…From the point of view of capacitor applications, although signicant efforts have been made to increase the 3 0 of ferroelectric-ceramic/polymer composites, their 3 0 values are difficult to signicantly enhance to more than 100 even though the ller contents as high as 50 vol% (or f ller ¼ 0.5) were used. 3,17,18 Furthermore, ferroelectric ceramics usually exhibit an electromechanical effect (i.e., a piezoelectric effect). This can cause a mechanical resonance in the device during charging and discharging, resulting in a reliability limit of the device.…”

“…were prepared using a liquid-phase assisted dispersion method. 1,15,17 First, the prepared LSNO-NPs and purchased PVDF (Sigma-Aldrich) were mixed by ball-milling in absolute ethanol for 5 h using ZrO 2 balls. Second, the mixture was further dried to evaporate the absolute ethanol.…”