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Fabrication of NiFe2O4 nanowire arrays and its magnetic properties

Du You-Wei Yu Dong-Liang

Fabrication of NiFe2O4 nanowire arrays and its magnetic properties

Du You-Wei, Yu Dong-Liang
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  • Abstract views:  2891
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Publishing process
  • Received Date:  17 May 2004
  • Accepted Date:  17 June 2004
  • Published Online:  01 March 2005

Fabrication of NiFe2O4 nanowire arrays and its magnetic properties

  • 1. (1)南京大学物理系,固体微结构国家重点实验室,南京 210093; (2)南京大学物理系,固体微结构国家重点实验室,南京 210093;江苏教育学院物理系,南京 210013

Abstract: Arrays of NiFe2O4 nanowires were prepared by using porous anodic al uminum oxide(AAO) membrane as the template. For the preparation of the ferrite n anowires, Ni_Fe alloy nanowires were electrodeposited into the pores of the AAO membranes. The atomic ratio is about Ni∶Fe=1∶2 which can be detected by engerg y dispersive spectroscopy. X-ray diffraction study showed the pure phase of NiFe 2O4 after anodization. SEM and TEM studies showed the diameters of t he pores and the nanowires are all about 70nm. The vibrating sample magnetometer studies of the nanowire arrays showed the anisotropic magnetic properties befor e and after anodization. Coercivity and squareness ratio have been improved appa rently in the NiFe2O4 nanowires arrays.

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