Low-Frequency Dependence of Conductivity and Dielectric Properties of Polyaniline/ZnFe_(2)O_(4) Nanocomposites

作     者：G.D.Prasanna H.S.Jayanna Ashok R Lamani M.L.Dinesha C.S.Naveen G.J.Shankaramurthy 

作者机构：Department of PG Studies and Research in PhysicsKuvempu UniversityShankarghatta-577451KarnatakaIndia Bapuji Institute of Engineering and TechnologyDavangere-577004KarnatakaIndia 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2011年第28卷第11期

页      面：218-221页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0704[理学-天文学] 

主　　题：composites ZnFe2O4 conductivity 

摘      要：Conducting polyaniline/ZnFe_(2)O_(4) nanocomposites are synthesized by using a simple and inexpensive one-step in-situ polymerization method in the presence of ZnFe2O4 *** structural,morphological and electrical properties of the samples are characterized by x-ray diffraction,Fourier transform infrared spectra and scanning electron *** results reveal the formation of polyaniline/ZnFe2O4 *** morphology of these samples is studied by scanning electron ***,the ac conductivity(σac)of these composites is investigated in the frequency range of 1 kHz–10 *** presence of polarons and bipolarons are responsible for the frequency dependence of ac conductivity in these *** ac conductivity is found to be constant up to 1MHz and thereafter it increases *** ac conductivity of 0.695 S・cm^(−1) at room temperature is observed as the maxima for the polyaniline with 40wt%of the ZnFe2O4 nanocomposite.