Journal of Inorganic Materials

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Preparation of Ni/PSt/TiO2 Multiply Coated Spheres Responsive to Electric and Magnetic Fields

GUO Hong-Xia; LIU Gen-Qi; NING Guang-Hui; ZHAO Xiao-Peng   

  1. Institute of Electrorheological Technology; Department of Applied Physics; Northwestern Polytechnical University; Xi an 710072; China
  • Received:2002-07-15 Revised:2002-09-09 Published:2003-07-20 Online:2003-07-20

Abstract: The multiply coated Ni/PSt/TiO2 spheres with uniform size, high refractive index and easily assembling
property by electric and magnetic fields were prepared. The multilayer complex spheres consisted of a modified nickel colloidal sphere as the core,
a polymer polystyrene coating, and an outermost coating of titania. The prepared Ni/PSt/TiO2 multilayer composite spheres were characterized by
FT-IR, XRD, TEM, etc. Also, the composite particles showed well responses to electric and magnetic fields which were reflected by the formation of
network structure under electric and magnetic fields superimposed in the perpendicular.

Key words: multilayer coated Ni/PSt/TiO2 spheres, core-shell structure, coating, electric and magnetic responses

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