水熱法制備納米鎳鋅鐵氧體粉體及其磁性能

編號：FTJS00411

篇名：水熱法制備納米鎳鋅鐵氧體粉體及其磁性能

作者：曹慧群; 魏波; 劉劍洪; 李耀剛; 朱美芳; 王野;

關(guān)鍵詞：鎳鋅鐵氧體; 制備; 磁性; 水熱法;

機構(gòu)： 深圳大學(xué)化學(xué)與化工學(xué)院; 東華大學(xué)材料科學(xué)與工程學(xué)院纖維改性國家重點實驗室; 廈門大學(xué)固體表面物理化學(xué)國家重點實驗室 廣東深圳; 廣東深圳; 福建廈門;

摘要： 用水熱法分別在200℃和220℃下反應(yīng)5h制備了納米級鎳鋅鐵氧體(Ni0.5Zn0.5Fe2O4)粉體。用X射線衍射(X-ray diffraction,XRD)分析合成的納米Ni0.5Zn0.5Fe2O4的物相,結(jié)果表明:200℃水熱反應(yīng)5h得到的納米Ni0.5Zn0.5Fe2O4粉體中含有γ-Fe2O3,220℃水熱反應(yīng)5h可以得到純納米Ni0.5Zn0.5Fe2O4粉體。用透射電鏡(transmission electronmicroscope,TEM)、M?ssbauer譜(M?ssbauer spectroscopy,MS)、Fourier紅外分析(Fourier transform infrared spectroscopy,FTIR)、振動樣品磁強計(vibrating sample magnetometer,VSM)等方法表征純納米Ni0.5Zn0.5Fe2O4粉體。TEM結(jié)果表明:納米Ni0.5Zn0.5Fe2O4粉體粒子為球形,粒徑約為20nm。室溫MS結(jié)果表明:大部分納米Ni0.5Zn0.5Fe2O4粉體粒子表現(xiàn)出鐵磁性,少量的表現(xiàn)出超順磁性。FTIR分析表明:樣品在577cm-1和42... Nanosized nickel zinc ferrite(Ni0.5Zn0.5Fe2O4)powder was synthesized by the hydrothermal synthesis method at 200℃ and 220 ℃for 5h,respectively.An X-ray diffraction(XRD)was adopted for the characterization of Ni0.5Zn0.5Fe2O4 powder.It is concluded that the Ni0.5Zn0.5Fe2O4 powder containedγ-Fe2O3 when it is synthesized at 200 ℃for 5h,and pure Ni0.5Zn0.5Fe2O4 powder were prepared by the hydrothermal synthesis at 220 ℃for 5h.The pure powder was characterized by a transmission electron micro-scope(TEM),M?ssbauer...