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
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