以十六烷基三甲基溴化铵(CTAB)为表面活性剂,通过液相还原法成功制备磁性穗状钴颗粒.采用电子扫描显微镜(SEM)、能谱仪(EDS)、X射线衍射仪(XRD)与振动样品磁强计(VSM)对制备的钴颗粒进行表征.结果表明:添加CTAB时得到的穗状钴颗粒为片层结构,晶体结构以密排六方为主;而未添加CTAB时得到的是以面心立方为主的菜花状钴颗粒.片层结构穗状钴颗粒的比饱和磁化强度与矫顽力分别为116.17A·m2 ·kg-1与20.3kA·m-1,而菜花状钴颗粒的比饱和磁化强度及矫顽力分别为158.24A·m2·kg-1与9.174kA·m 1,分析认为这种差异可能是由钴颗粒粒径、磁晶各向异性、形状各向异性以及内部缺陷所导致.
参考文献
| [1] | PETIT C,TALEB A,PILENI M P.Self-organization of magnet icnanosized cobalt particles[J].Adv Mater,1998,(10):259-261.,1998. |
| [2] | STAMM C,MARTY F,VATERLAUS A,et al.Two-dimen sionalmagneticparticles[J].Science,1998,(282):499-451.,1998. |
| [3] | PETIT C,CRE T,RODITCHEV D,et al.PILENI.Single elec tron tunneling through nano sized cobalt particles[J].Adv Mater,1999,(11):1198-1202.,1999. |
| [4] | LEGRAND J,PETIT C,PILENI M P.Domain shapes and su perlattices made of 8nm cobalt nanocrystals:fabrication and mag neticproperties[J].J Phys ChemB,2001,(105):5643-5646.,2001. |
| [5] | GAMBARDELLA P,RUSPONI S,VERONESE M,el al.Giant magnetic anisotropy of single cobalt atoms and nanoparticles[J].Science,2003,(300):1130-1133.,2003. |
| [6] | WANG C,HAN X,XU P,et al .Controlled synthesis of hierar chical nickel and morphology dependent electromagnetic proper ties[J].The Journal of Physical Chemistry C,2010,114(7):3196-3203.,2010. |
| [7] | TONG G,YUAN J,WU W,et al .Flower like Co superstruc tures:morphology and phase evolution mechanism and novel mi crowave electromagnetic characteristics[J].Cryst Eng Comm,2012,14(6):2071-2079.,2012. |
| [8] | LI M,XIE K N,WU Y Z,et al .Synthesis of cobalt nanowires by template free method[J].Materials Letters,2013,111(15):185-187.,2013. |
| [9] | SIVASUBRAMANIAN R,SANGARANARAYANAN M V .Boric acid assisted electrosynthesis of hierarchical three dimen sional cobalt dendrites and microspheres[J].Materials Chemistry andPhysics,2012,136:448-454.,2012. |
| [10] | SOUMARE Y,GARCIA C,MAURER T,et al .Kinetically controlled synthesis of hexagonally close packed cobalt nanorods with high magnetic coercivity[J].Adv Funct Mater,2009,19(12):1971-1977.,2009. |
| [11] | 喻克宁,毛铭华,梁焕珍,等 .Co(OH)2碱性浆化氢还原制备超 Co粉[J].过程工程学报,2001(1):62-65. |
| [12] | SHARMA I G,BOSE D K,MUKHERJEE T K .A study on preparation of cobalt metal powder[J].Trans Indian Inst Met,1995,48(1):49-54.,1995. |
| [13] | ZHULP,ZHANGWD,XIAOH M,etal .Facile synthesis of metallic Co hierarchical nanostructured microspheres by a simple solvothermalprocess[J].J Phys Chem C,2008,112 |
| [14] | ZHANG Y J,YAO Q,ZHANG Y,et al .Solvothermal synthe sis of magnetic chains self-assembled by flowerlike cobalt submi crospheres[J].Crystal Growth & Design,2008,8(9):3206-3212.,2008. |
| [15] | TONG G X,W WU H,HUA Q,et al.Grinding speed depend ence of microstructure,conductivity,and microwave electro magnetic and absorbing characteristics of the flaked Fe particles[J].J Mater Res,2011,(26):682-688.,2011. |
| [16] | 郭子政,胡旭波.应力对铁磁薄膜磁滞损耗和矫顽力的影响[J].物理学报,2013(05):412-417. |
| [17] | 刘晓旭,赵兴涛,张颖,朱岩,吴光恒.高矫顽力的C0（70）Cu（30）合金纳米线阵列的制备及磁性研究[J].物理学报,2012(13):457-462. |
| [18] | ZHANG Y J,YAO Q,ZHANG Y,et al.Solvothermal synthe sis of magnetic chains self-assembled by flowerlike cobalt submi crospheres[J].Gryst GrowthDes,2008,(8):3206-3212.,2008. |
| [19] | SNOEK J L .Dispersion and absorption in magnetic ferrites at frequencies above oneMc/s[J].Physica,1948,14(4):207-217.,1948. |
| [20] | IAKUBOV I T,LAGARKOV A N,MAKLAKOV S A,et al .Microwave permeability of composites filled with thin Fe films[J].Journal of Magnetism and Magnetic Materials,2006,300(1):74-77.,2006. |
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