PtCo/Au nanocomposite: Synthesis, characterization, and magnetic properties

被引：7
作者：
Dai, Jingtao
Du, Yukou
Wang, Fangwei
Yang, Ping [1 ]
机构：
[1] Soochow Univ, Dept Chem, Suzhou 215123, Peoples R China
[2] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100080, Peoples R China
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2007年 / 39卷 / 02期
基金：
中国国家自然科学基金;
关键词：
PtCo/Au nanocomposite; reverse micelle method; magnetic properties;
D O I：
10.1016/j.physe.2007.06.034
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Magnetic PtCo/Au nanocomposites with narrow size distribution were synthesized in a reverse micelle, followed by a post-synthesis handling of the stabilizer-exchange technique. The PtCo/Au nanocomposites were characterized by ultraviolet visible spectroscopy, X-ray diffraction and transmission electron microscopy, respectively. Superconducting quantum interference device studies revealed that the nanocomposites were superparamagnetic above the blocking temperature (T-B = 69 K), while the samples were ferromagnetic with He (628 Oe) and Ms (2.97 emu/g) at 5 K. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：271 / 276
页数：6
相关论文
共 36 条
  • [11] Darling A.S., 1963, PLATINUM MET REV, V7, P96
  • [12] Origin of ferromagnetism and nano-scale phase separations in diluted magnetic semiconductors
    Dietl, Tomasz
    [J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2006, 35 (02) : 293 - 299
  • [13] Quantum couplings and magnetic properties of CoCrxFe2-xO4 (0<x<1) spinel ferrite nanoparticles synthesized with reverse micelle method
    Han, M
    Vestal, CR
    Zhang, ZJ
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (02) : 583 - 587
  • [14] HUTTER E, 2003, J PHYS CHEM B, V107, P668
  • [15] Jana NR, 2001, LANGMUIR, V17, P6782, DOI [10.1021/la0104323, 10.1021/1a0104323]
  • [16] Photophysical, photochemical and photocatalytic aspects of metal nanoparticles
    Kamat, PV
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (32) : 7729 - 7744
  • [17] Magneto-stimulated hydrodynamic control of electrocatalytic and bioelectrocatalytic processes
    Katz, E
    Willner, I
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (35) : 10290 - 10291
  • [18] Co ferrite films with excellent perpendicular magnetic anisotropy and high coercivity deposited at low temperature
    Kitamoto, Y
    Kantake, S
    Shirasaki, F
    Abe, M
    Naoe, M
    [J]. JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) : 4708 - 4710
  • [19] Gold-coated iron (Fe@Au) nanoparticles: Synthesis, characterization, and magnetic field-induced self-assembly
    Lin, J
    Zhou, WL
    Kumbhar, A
    Wiemann, J
    Fang, JY
    Carpenter, EE
    O'Connor, CJ
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 2001, 159 (01) : 26 - 31
  • [20] Magnetic properties of nanometer-size CoPt particles
    Liou, S.H.
    Liu, Y.
    Malhotra, S.S.
    Yu, M.
    Sellmyer, D.J.
    [J]. Journal of Applied Physics, 1996, 79 (8 pt 2A) : 5060 - 5062
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