Paper Title:
Structural and Magnetic Characterization of Polyaniline Composite Films
  Abstract

In this work a novel approach for the preparation of Fe3O4/PANI (polyaniline) thin film composite containing magnetic nanoparticles is presented. Magnetite (Fe3O4) nanoparticles have been coated by PANI and the PANI chains have been doped by 10-camphorsulfonic acid (CSA). The doped composite is soluble in common organic solvents. Thin films of composites of polyaniline (PANI) were casted from m-cresol. Several characterization techniques were employed in order to determine composition, structure and magnetic properties of the nanocomposite film (Xray diffraction, transmission electron microscopy, TEM, Scanning electron microscopy, SEM, and optical microscopy). The magnetization data were obtained from M(H) hysteresis loops and zero field cooling – field cooling, ZFC-FC. Magnetic measurements evidence a ferromagnetic behaviour of the obtained composite, at room temperature with saturation magnetization of about 3.4 emu/g and coercivity of 42 Oe. The temperature dependences of the conductivity of the films follows the         = − 1 / 2 ( ) exp T T To o σ σ law, which has been explained within the framework of the onedimensional variable-range-hoping (1D-VRH) model. Application of 1T magnetic field increases the resistivity of the film and the temperature slope dependence.

  Info
Periodical
Edited by
Dílson S. dos Santos
Pages
138-143
DOI
10.4028/www.scientific.net/MSF.570.138
Citation
J. C. Aphesteguy, S. E. Jacobo, R. López Antón, G.V. Kurlyandskaya, "Structural and Magnetic Characterization of Polyaniline Composite Films", Materials Science Forum, Vol. 570, pp. 138-143, 2008
Online since
February 2008
Export
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Nuno João O. Silva, Angel Millan, Vitor S. Amaral, Fernando Palacio, Lianshe Fu, Luís D. Carlos, V. de Zea Bermudez
Abstract:Nanometric ferrihydrite, maghemite and magnetite particles formed within an organicinorganic hybrid matrix were obtained by the sol-gel...
142
Authors: Xiao Xue Xu, Yu Feng Zheng
Abstract:Magnetic nanoparticles have attracted intensive attention for their wide applications as biomaterials and magnetic storage materials....
659
Authors: Dong Lin Zhao, Hong Ye Zhao, Xian Wei Zeng, Qi Sheng Xia, Jin Tian Tang
1185
Authors: Juan Fco Luna Martínez, E. Reyes-Melo, Virgilio González-González, A. Torres-Castro, Carlos Guerrero-Salazar, Selene Sepúlveda-Guzmán
Abstract:In this work, iron oxide nanoparticles (~5 nm) embedded in a chitosan polymer film, were synthesized. In order to obtain this nanostructured...
51