%0 Journal Article
%T Synthesis and Magnetic Properties of Nanoparticles of Fe-Co Alloys and Their Oxides Prepared by Chemical Vapor Condensation
%A Zhenhua WANG
%A Zhidong ZHANG
%A CJChoi
%A BKKim
%A JCKim
%A <br>G.J.Choi
%A B.K.Kim
%A J.C.Kim
%J 材料科学技术学报
%D 2004
%I 
%X Nanoparticles of Fe-Co alloys and their oxides with the particle size below 20 nm were prepared by chemical vapor condensation process. The pure Ar, Ar+1%O2, Ar+3%O2 and Ar+6%O2 were used as carrier gases, with iron carbonyl and cobalt carbonyl as the precursors. XRD patterns showed that Fe-Co metallic nanoparticles were synthesized by using pure Ar as carrier gas, and only metal oxides were obtained using Ar+(>3)%O2 as carrier gas. The HRTEM images and TG-DTA curves were used to study the core-shell structure of the different nanoparticles. The nanoparticles obtained in pure Ar consist of black core and light shell with thickness of 2~4 nm. However, in the particles obtained in Ar+6%02, the oxides core with visible lattice fringes are surrounded by thin shell.
%K Fe-Co
%K Nanoparticles
%K HRTEM
%K CVC<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=D57E8592C7BA23815A8F7993E38CB781&yid=D0E58B75BFD8E51C&vid=A04140E723CB732E&iid=E158A972A605785F&sid=3389C664025A98F9&eid=8C5DE51F0A009A0F&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=9