| 液相热分解纳米铁镍合金的形貌可控合成及其磁学性能研究; Thermolysis Synthesis of Shape-Controlled Fe-Ni Alloy Nanoparticles and Magnetic Property | |
| 赖文忠 ; 王鹏 ; 赵威 ; 冷永华 ; 黄婧 ; 李星国 | |
| 2009 | |
| 关键词 | 液相法 形貌可控合成 金属纳米颗粒 铁镍合金 磁学性能 solution method shape control metal nanoparticles Fe-Ni alloy magnetic property |
| 英文摘要 | 以Fe(CO)_5和Ni(HCOO)_2为前驱物,十八烯为溶剂,在表面活性剂和分散剂油酸和油胺的协同作用下,通过前驱体的液相热分解和自合金化,制备铁镍合金纳米颗粒.通过XRD和TEM研究了产物的微观结构.并对产物的磁学性质进行了表征.结果表明,在反应温度为200℃,油胺与油酸及甲酸镍的物质的量比为4:2:1,反应时间为20 min时可得形貌可控、抗氧化性强的面心立方晶体结构的平面三角形纳米铁镍合金,晶粒尺寸为15～55 nm.磁性测量表明,300 K时三角形形貌铁镍合金的饱和磁化强度为15.5 emu·g~(-1),矫顽力趋近于零,呈现超顺磁性;在低温(4.2 K)时,铁镍合金的饱和磁化强度为17.5 emu·g~(-1),矫顽力增大明显.; Fe-Ni alloy nanoparticles were synthesized by thermal decomposition of Ni(COOH)_2 and Fe(CO)_5 with 1-octadecene as the solvent and oleic acid (OA) and oleylamine(OLA) as surfactants. The produced Fe-Ni alloy nanoparticles were characterized by X-ray diffraction(XRD), transmission electron microscope(TEM) and vibrating sample magnetometer(VSM). The results showed that a shape controlled fcc phase Fe-Ni alloy nanoparticles of triangular shape was formed when the molar ratio, of OA, OLA and Ni(HCOO)_2 was 4:2:1 at 200 ℃ fo 20 min. Magnetic measurements revealed the alloy nanoparticles of triangular shape exhibit superparamagnetic behavior with a saturation magnetization of 15.5 emu·g~(-1) at 300 K; a saturation magnetization of 17.5 emu·g~(-1) and a coer-civity of 158 Oe at 4.2 K.; 国家自然科学基金; 国家高技术研究发展计划(863计划); http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000271447100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 1; 10; 1703-1710; 25 |
| 语种 | 中文 |
| 出处 | SCI ; 万方 ; http://d.g.wanfangdata.com.cn/Periodical_wjhxxb200910001.aspx |
| 出版者 | 无机化学学报 |
| 内容类型 | 其他 |
| 源URL | [http://hdl.handle.net/20.500.11897/46827]  |
| 专题 | 化学与分子工程学院 |
| 推荐引用方式 GB/T 7714 | 赖文忠,王鹏,赵威,等. 液相热分解纳米铁镍合金的形貌可控合成及其磁学性能研究, Thermolysis Synthesis of Shape-Controlled Fe-Ni Alloy Nanoparticles and Magnetic Property. 2009-01-01. |
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