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Liquid Phase Deposition of Transition Metal Ferrite Thin Films: Synthesis and Magnetic Properties

Caruntu Gabriel    (Advanced Materials Research Institute, Chemistry Department, University of New Orleans   ); O'Connor Charles J.    (Advanced Materials Research Institute, Chemistry Department, University of New Orleans  );
  • 초록

    We report on the synthesis of highly uniform, single phase zinc and cobalt thin films prepared by the Liquid Phase Deposition (LPD) method. X-Ray diffraction, TGA and EDX measurements support the assumption that the as deposited films are constituted by a mixture of crystallized FeOOH and amorphous M(OH) $_2$ (M=Co, Zn) which is converted upon heat treatment in air at 600?C into the corresponding zinc ferrites. The films with adjustable chemical compositions are identified with a crystal structure as spinel-type and present a spherical or rod-like microstructure, depending on the both the nature and concentration of the divalent transition metal ions. Zinc ferrite thin films present a superparamagnetic behavior above blocking temperatures which decrease with increasing the Zn content and are ferromagnetic at 5 K with coercivities ranging between 797.8 and 948.5 Oe, whereas the cobalt ferrite films are ferromagnetic at room temperature with magnetic characteristics strongly dependent on the chemical composition.


  • 주제어

    Ferrite .   Thin film .   Synthesis .   Magnetic properties.  

  • 참고문헌 (35)

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