National Taiwan Ocean University Institutional Repository:Item 987654321/47282
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 28611/40652
造访人次 : 752734      在线人数 : 44
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻


题名: Probing the Size Effect of Co2FeGa-SiO2@C Nanocomposite Particles Prepared by a Chemical Approach
作者: Yeu-Kuang Hwu
Changhai Wang
Lubna Basit
Yuriy Khalavka
Yanzhi Guo
Frederick Casper
Teuta Gasi
Vadim Ksenofontov
贡献者: 國立臺灣海洋大學:光電科學研究所
日期: 2010-11
上传时间: 2018-07-10T02:12:08Z
摘要: Abstract: In this contribution, we report the chemical synthesis of carbon coated, silica supported Co2FeGa (Co2FeGa-SiO2@C) nanocomposite particles. The particle size of Co2FeGa particles can be tuned by varying the amount of silica supports. The dependences of the crystal structure and magnetic properties on particle size have been investigated by synchrotron radiation based X-ray diffraction (XRD), X-ray absorption fine structure (XAFS) spectroscopy, transmission electron microscope (TEM), 57Fe Mössbauer spectroscopy, and superconducting quantum interference device (SQUID). The superparamagnetic critical size of Co2FeGa Heusler nanoparticles is found to be ∼17 nm by correlating the TEM derived particle size distribution to the Mössbauer spectroscopy data. The effects of silica supports and carbon coating on the formation of Co2FeGa nanoparticles of various sizes are also discussed.
關聯: 22(24) pp.6575–6582
显示于类别:[光電科學研究所] 期刊論文


档案 描述 大小格式浏览次数



著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈