New electric double-layered magnetic fluids based on copper, nickel, and zinc ferrite nanostructures

被引:259
作者
Sousa, MH
Tonrinho, FA
Depeyrot, J
da Silva, GJ
Lara, MCFL
机构
[1] Univ Brasilia, Inst Fis, Complex Fluids Grp, BR-70919970 Brasilia, DF, Brazil
[2] Univ Brasilia, Inst Quim, Complex Fluids Grp, BR-70919970 Brasilia, DF, Brazil
来源
JOURNAL OF PHYSICAL CHEMISTRY B | 2001年 / 105卷 / 06期
关键词
D O I
10.1021/jp0039161
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report on stable colloidal aqueous suspensions of magnetic nanostructures made of copper, nickel, and zinc ferrites. These magnetic fluids could represent a new alternative for biological applications. The basic steps of the nanoparticles synthesis, their chemical surface treatment, and their peptization in a stable colloidal sol are given. Their chemical composition is carefully checked, and X-ray diffraction patterns provide both their mean size and a structural characterization. Magnetization results obtained at 300 K are presented and discussed.
引用
收藏
页码:1168 / 1175
页数:8
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