Title :
Dielectric response of BaZn1/3Ta2/3O3 reinforced polymer composites
Author :
Manu, K.M. ; Soni, Sumeet ; Murthy, V.R.K. ; Sebastian, M.T.
Author_Institution :
Marerials Div., Nat. Inst. for Interdiscipl. Sci. & Technol., Thiruvananthapuram, India
Abstract :
The Perovskite type BaZn1/3Ta2/3O3 (BZT) ceramic filled High density polyethylene (HDPE) composite with different volume fractions (Vf) up to 0.45 were prepared. The effect of filler content on the dielectric properties were studied both at radio and microwave frequencies. As the volume fraction of the filler increased, the relative permittivity (εr) of the composite gradually increased. Different theoretical models were used to predict the relative permittivity of the composite at 1 MHz and it was found that Effective Medium Theory (EMT) was in good agreement with the experimental data. The composite with 0.45 Vf of the filler showed εr = 8.26 and tanδ =6.5×10-4 at 5 GHz.
Keywords :
barium compounds; ceramics; filled polymers; permittivity; BaZn0.33Ta0.67O3; BaZn1/3Ta2/3O3 reinforced polymer composites; EMT; HDPE; dielectric properties; dielectric response; different theoretical models; effective medium theory; filler content effect; frequency 1 MHz; frequency 5 GHz; high density polyethylene; microwave frequency; perovskite type BaZn1/3Ta2/3O3 ceramic; radiofrequency; relative permittivity; volume fractions; Ceramics; Dielectric losses; Loading; Mathematical model; Permittivity; Polymers; Composite; dielectric loss etc; relative permittivity; substrate;
Conference_Titel :
Applied Electromagnetics Conference (AEMC), 2011 IEEE
Conference_Location :
Kolkata
Print_ISBN :
978-1-4577-1098-8
DOI :
10.1109/AEMC.2011.6256859
