Fabrication and magnetic properties of NiFe2O4 nanorods
来源期刊：Rare Metals2010年第4期
论文作者：WU Yuea,b,SHI Changhongc,and YANG Weia a National Key Laboratory for Electronic Measurement Technology,North University of China,Taiyuan ,China b School of Mechanical and Electronic Engineering,North University of China,Taiyuan ,China c The Quartermaster Institute of the General Logistics Department of the PLA,Beijing ,China
文章页码：385 - 389
摘 要：NiFe2O4 nanorods have been successfully synthesized via thermal treatment of the rod-like precursor fabricated by Ni-doped α-FeOOH,which was enwrapped by the complex of citric acid and Ni2+.The morphology evolution during the calcination of the precursor nanorods was investigated with transmission electron microscopy（TEM）,and the phase and the magnetic properties of samples were analyzed through X-ray diffraction（XRD） and vibrating sample magnetometer（VSM）.The results indicated that the diameter of the NiFe2O4 nanorods obtained ranged between 30 and 50 nm,and the length ranged between 2 and 3 μm.As the calcination temperature was up to 600℃,the coercivity,saturation magnetization,and remanent magnetization of the samples were 36.1 kA·m-1,27.2 A·m2·kg-1,and 5.3 A·m2·kg-1,respectively.The NiFe2O4 nanorods prepared have higher shape anisotropy and superior magnetic properties than those with irregular shapes.
WU Yuea,b,SHI Changhongc,and YANG Weia a National Key Laboratory for Electronic Measurement Technology,North University of China,Taiyuan 030051,China b School of Mechanical and Electronic Engineering,North University of China,Taiyuan 030051,China c The Quartermaster Institute of the General Logistics Department of the PLA,Beijing 100010,China
摘 要：NiFe2O4 nanorods have been successfully synthesized via thermal treatment of the rod-like precursor fabricated by Ni-doped α-FeOOH,which was enwrapped by the complex of citric acid and Ni2+.The morphology evolution during the calcination of the precursor nanorods was investigated with transmission electron microscopy（TEM）,and the phase and the magnetic properties of samples were analyzed through X-ray diffraction（XRD） and vibrating sample magnetometer（VSM）.The results indicated that the diameter of the NiFe2O4 nanorods obtained ranged between 30 and 50 nm,and the length ranged between 2 and 3 μm.As the calcination temperature was up to 600℃,the coercivity,saturation magnetization,and remanent magnetization of the samples were 36.1 kA·m-1,27.2 A·m2·kg-1,and 5.3 A·m2·kg-1,respectively.The NiFe2O4 nanorods prepared have higher shape anisotropy and superior magnetic properties than those with irregular shapes.
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