| 静电纺丝法制备Sr1-xLaxFe12-xCoxO19纳米纤维及其磁性研究 |
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| 引用本文： | 李从举,张莲莲,王娇娜. 静电纺丝法制备Sr1-xLaxFe12-xCoxO19纳米纤维及其磁性研究[J]. 无机材料学报, 2011, 0(8): 797-801 |
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| 作者姓名： | 李从举 张莲莲 王娇娜 |
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| 作者单位： | 北京服装学院材料科学与工程学院;北京市服装材料研究开发与评价重点实验室; |
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| 基金项目： | 国家自然科学基金(51073005); 北京市自然科学基金(2112013); 北京市教委科技发展计划重点项目(KZ201010012012); 北京市属高等学校人才强教深化计划(IHLB); 国家863项目(2007AA021906); 国家973项目(2010CB933501)~~ |
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| 摘 要： | 采用溶胶?凝胶过程和静电纺丝技术相结合的方法,制得了PVP/Sr1-xLaxFe12-xCoxO19(x=0～0.5)复合纳米纤维,经过煅烧处理过程,获得了Sr1-xLaxFe12-xCoxO19(x=0～0.5)纳米纤维.通过SEM、TEM、XRD和VSM等技术对样品的形貌、物相、结构以及磁性能进行了表征.结果表明,800℃煅烧后的Sr1-xLaxFe12-xCoxO19(x=0.5)纳米纤维的直径主要分布在80～150 nm;这些纤维在室温下都具有硬磁特性,化学组成对铁氧体的磁性能有着显著的影响,当x≥0.3时,样品中同时出现M型的SrFe12O19、LaFeO3和CoFe2O4;在适当范围内(x≤0.1),La3+-Co2+的掺杂有利于改善锶铁氧体纤维的永磁性能,相应的矫顽力、饱和磁化强度和剩余磁化强度分别为Hc=432.02kA/m,Ms=54.7A.m2/kg,Mr=28.9A.m2/kg,与传统溶胶?凝胶法在相同条件下制得的Sr0.9La0.1Fe11.9Co0.1O19粉体样品相比,磁性能也有显著提高.
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| 关 键 词： | 静电纺丝 M型SrFe12O19 La-Co取代 磁性能 |
Preparation and Magnetic Properties of Sr_(1-x)La_xFe_(12-x)Co_xO_(19) Nanofibers by Electrospinning |
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| LI Cong-Ju,,ZHANG Lian-Lian,WANG Jiao-Na. Preparation and Magnetic Properties of Sr_(1-x)La_xFe_(12-x)Co_xO_(19) Nanofibers by Electrospinning[J]. Journal of Inorganic Materials, 2011, 0(8): 797-801 |
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| Authors: | LI Cong-Ju ZHANG Lian-Lian WANG Jiao-Na |
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| Affiliation: | LI Cong-Ju1,2,ZHANG Lian-Lian1,WANG Jiao-Na1,2(1.Department of Material Science and Engineering,Beijing Institute of Clothing Technology,Beijing 100029,China,2.Beijing Key Laboratory of Clothing Materials R&D and Assessment,China) |
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| Abstract: | PVP/Sr1-xLaxFe12-xCoxO19(x=0-0.5) composite nanofiers were fabricated by Sol-Gel process and electrospinning technique.After high temperature calcination,Sr1-xLaxFe12-xCoxO19(x=0-0.5) ferrite nanofi-bers were successfully obtained.The morphology,phases,structure and magnetic properties of the nanofibers were characterized by Scanning electron microscope(SEM),Transmission electron microscope(TEM),X-ray diffraction(XRD) and Vibrating sample magnetometer(VSM).The results show that the samples have an uni-form ... |
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| Keywords: | electrospinning M-type strontium ferrites La-Co substitution magnetic properties |
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