Effect of CTAB on Morphology and Magnetic Properties of Cobalt Particles Prepared by Liquid Phase Reduction Method
WEN Shu-lai1, CHENG Jing-wei1, LI Hong1, LIU Ying1, ZHAO Xiu-chen1, WANG Yu-feng2
1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;
2. Xi'an Aero-engine (Group) Ltd., Xi'an 710021, China
Abstract：Using CTAB as surfactant active agent,the spicate cobalt particles were synthesized through liquid phase reduction method. The cobalt particles were characterized by scanning electron microscopy (SEM), energy disperse spectroscopy (EDS), the X-ray diffraction (XRD) and vibrating sample magnetometer (VSM), respectively. The results show that the spicate cobalt particles with CTAB are assembled by nanoplates, mainly composed by HCP structure, while the cobalt particles without CTAB are mainly composed by FCC structure. For the cobalt particles with CTAB, saturation magnetization and coercivity are 116.17A·m2·kg-1 and 20.3kA·m-1, respectively, while for the cobalt particles without CTAB, saturation magnetization and coercivity are 158.24A·m2·kg-1 and 9.174kA·m-1, respectively. The differences in magnetic properties mainly result from grain size, magnetocrystalline anisotropy, shape anisotropy and defect of cobalt particles.
温术来, 程荆卫, 李红, 刘颖, 赵修臣, 王玉锋. 十六烷基三甲基溴化铵对液相还原法制备钴颗粒形貌与磁性能的影响[J]. 材料工程, 2014, 0(8): 21-26.
WEN Shu-lai, CHENG Jing-wei, LI Hong, LIU Ying, ZHAO Xiu-chen, WANG Yu-feng. Effect of CTAB on Morphology and Magnetic Properties of Cobalt Particles Prepared by Liquid Phase Reduction Method. Journal of Materials Engineering, 2014, 0(8): 21-26.
[1] PETIT C, TALEB A, PILENI M P. Self-organization of magnetic nanosized cobalt particles[J]. Adv Mater,1998,(10):259-261.
[2] STAMM C, MARTY F, VATERLAUS A, et al. Two-dimensional magnetic particles[J]. Science,1998,(282):499-451.
[3] PETIT C, CRE T, RODITCHEV D, et al. PILENI. Single electron tunneling through nano-sized cobalt particles[J].Adv Mater,1999,(11):1198-1202.
[4] LEGRAND J, PETIT C, PILENI M P. Domain shapes and superlattices made of 8nm cobalt nanocrystals: fabrication and magnetic properties[J]. J Phys Chem B,2001,(105):5643-5646.
[5] GAMBARDELLA P, RUSPONI S, VERONESE M, el al. Giant magnetic anisotropy of single cobalt atoms and nanoparticles[J].Science,2003,(300):1130-1133.
[6] WANG C, HAN X, XU P, et al. Controlled synthesis of hierarchical nickel and morphology-dependent electromagnetic properties[J]. The Journal of Physical Chemistry C,2010,114(7):3196-3203.
[7] TONG G, YUAN J, WU W, et al. Flower-like Co superstructures: morphology and phase evolution mechanism and novel microwave electromagnetic characteristics[J]. Cryst Eng Comm,2012,14(6):2071-2079.
[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.
[9] SIVASUBRAMANIAN R, SANGARANARAYANAN M V. Boric acid assisted electrosynthesis of hierarchical three-dimensional cobalt dendrites and microspheres[J]. Materials Chemistry and Physics,2012,136(2-3):448-454.
[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.
[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(1):62-65. YU K N, MAO M H, LIANG H Z, et al. Preparation of ultrafine Co powder from basic Co(OH)2 slurry by hydrogen reduction[J]. The Chinese Journal of Process Engineering,2001,1(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.
[13] ZHU L P, ZHANG W D, XIAO H M, et al. Facile synthesis of metallic Co hierarchical nanostructured microspheres by a simple solvothermal process[J]. J Phys Chem C,2008,112:10073-10078.
[14] ZHANG Y J, YAO Q, ZHANG Y, et al. Solvothermal synthesis of magnetic chains self-assembled by flowerlike cobalt submicrospheres[J]. Crystal Growth & Design,2008,8(9):3206-3212.
[15] TONG G X, W WU H, HUA Q, et al. Grinding speed dependence of microstructure, conductivity, and microwave electromagnetic and absorbing characteristics of the flaked Fe particles[J]. J Mater Res,2011,(26):682-688.
[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,2013,62(5):057501. GUO Z Z, HU X B. Effects of stress on the hysteresis loss and coercivity of ferromagnetic film[J]. Acta Physica Sinica,2013,(5):057501.
[17] 刘晓旭,赵兴涛,张颖,等.高矫顽力的Co70Cu30合金纳米线阵列的制备及磁性研究[J].物理学报,2012,61(13):137503. LIU X X, ZHAO X T, ZHANG Y, et al. Fabrication and magnetic properties of Co70Cu30 alloy nanowire arrays with high coercivity[J]. Acta Physica Sinica,2012,61(13):137503.
[18] ZHANG Y J, YAO Q, ZHANG Y, et al. Solvothermal synthesis of magnetic chains self-assembled by flowerlike cobalt submicrospheres[J]. Gryst Growth Des,2008,(8):3206-3212.
[19] SNOEK J L. Dispersion and absorption in magnetic ferrites at frequencies above one Mc/s[J].Physica,1948,14(4):207-217.
[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.
2014, Vol. 0 
