Open AccessFabrication of NiFe2O4 nanowire arrays and its magnetic properties
Author(s) -
Yu Dong-Liang,
Youwei Du
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.930
Subject(s) - materials science , nanowire , anodizing , coercivity , alloy , magnetometer , fabrication , oxide , porosity , membrane , nanotechnology , chemical engineering , analytical chemistry (journal) , composite material , magnetic field , metallurgy , condensed matter physics , aluminium , medicine , alternative medicine , pathology , chemistry , physics , quantum mechanics , chromatography , biology , engineering , genetics
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.