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Effects of current density on morphology and magnetic properties of Co TiO 2 electrodeposited nanocomposite films

M. POIANA1, L. VLAD1, P. PASCARIU1, A. V. SANDU2, V. NICA1, V. GEORGESCU1,*

Affiliation

  1. Faculty of Physics, Alexandru Ioan Cuza University of Iasi 700506, Romania
  2. “Gheorghe Asachi” Technical University, Iasi

Abstract

We describe some experimental results concerning the method of preparation by electrolysis of novel nanostructured magnetic Co-TiO2 composite films consisting of a cobalt matrix with dispersed titania nanoparticles. The films were electrodeposited onto copper substrates from an acid cobalt sulphate bath containing CoSO4·7H2O, H3BO3, NaCl, Na2SO4∙10H2O and TiO2 nanoparticles, with continuous magnetic stirring of the bath. The applied current density (varied in the range of 0.011  0.032 A/cm2) significantly influenced the film composition (introducing up to 14.0% TiO2 as average percentage in the film), the texture and their magnetic properties (magnetic anisotropy, saturation magnetization and coercive field)..

Keywords

Composite materials, Thin films, Electrodeposition, Magnetic properties, Co-TiO2 films.

Citation

M. POIANA, L. VLAD, P. PASCARIU, A. V. SANDU, V. NICA, V. GEORGESCU, Effects of current density on morphology and magnetic properties of Co TiO 2 electrodeposited nanocomposite films, Optoelectronics and Advanced Materials - Rapid Communications, 6, 3-4, March-April 2012, pp.434-440 (2012).

Submitted at: Jan. 29, 2012

Accepted at: April 11, 2012