Effect of silicon carbide nanoparticles on dielectric (2.45 GHz) and thermal properties of epoxy nanocomposites for microwave curing

Ranu Pal; Sandeep Kumar Singh; M.J. Akhtar; Kamal K. Kar

Volume 3, Issue 3 , 2018, , Pages 170-174


  Efforts to use microwaves in material processing are gradually increasing. However, the phenomenon associated with the processing is less understood. The conversion of electromagnetic energy into heat depends largely on the dielectric properties of the material being treated. Therefore, the fundamental ...  Read More

Role of doped ZnO nanoparticles as polymer chain segmental motion exciter in PVA-ZnO nanocomposites investigated by dielectric relaxation spectroscopy

Shobhna Choudhary; Ram J. Sengwa

Volume 2, Issue 5 , 2017, , Pages 315-324


  The dielectric and electrical spectra of solution cast prepared nanocomposite films comprising poly(vinyl alcohol) (PVA) as polymer matrix and zinc oxide (ZnO) as inorganic nanofiller (PVA–x wt% ZnO (x = 0, 1, 3 and 5)) have been investigated in the frequency range from 20 Hz to 1 MHz. Anomalous ...  Read More

Synthesis and characterization of (Ba,Ca)TiO3 - (Ni,Co,Zn)Fe2O4 multiferroic particulate composite

Richa Sharma; N. C. Mehra; R. P. Tandon

Volume 2, Issue 4 , 2017, , Pages 242-246


  In the present work, the composite series (1-x) Ba0.94Ca0.06TiO3 - (x) Ni0.7Co0.1Zn0.2Fe2O4 (where x = 0.1, 0.2, 0.3 and 0.4 wt. fraction) was synthesized by solid state reaction method followed by conventional sintering. The structure and morphology of prepared samples were examined using X-ray diffractometer ...  Read More

Nonlinear enhancement of the dielectric properties of PVA-Al2O3 nanocomposites

Ram J. Sengwa; Shobhna Choudhary

Volume 2, Issue 4 , 2017, , Pages 280-287


  Dielectric dispersion and relaxation behaviour of aqueous solution grown polymeric nanocomposite films consisting of poly(vinyl alcohol) (PVA) and alumina (Al2O3) (PVA–x wt% Al2O3 (x = 0, 1, 3 and 5)) have been studied in the frequency range from 20 Hz to 1 MHz by employing dielectric relaxation ...  Read More

AC conductivity and dielectric analysis of Pb1-xLax[(Mg1+x/3Nb2-x/3)0.65Ti0.35(1-x)/4]O3, (x = 0, 0.02, 0.05) relaxor ferroelecric ceramics

Pragya Pandit; Pargin Bangotra

Volume 1, Issue 2 , 2016, , Pages 131-139


  In this paper we investigate the effect of lanthanum doping on structural, dielectric and electrical  properties  of lead magnesium niobate - lead titanate, 0.65Pb(Mg1/3Nb2/3O3)- 0.35PbTiO3 (x=0, 0.02, 0.05) ferroelectric ceramics. Dielectric and AC impedance spectroscopic measurements were ...  Read More

Dielectric properties of PVDF-PZT composite films and their thermal dependence

Asheesh K. Sharma; Jayanth K. Swamy; Anjana Jain

Volume 1, Issue 2 , 2016, , Pages 185-190


  Piezoelectric polymer-ceramic composite materials are promising candidate for transducer application because of their inherent capability of combining the favourable properties of both ceramic and polymer materials. Present work discusses the dielectric properties of such composite films developed from ...  Read More