Blocking temperatures of amorphous iron nanoparticles coated by various surfactants

被引：38
作者：
Kataby, G
Koltypin, Y
Ulman, A
Felner, I
Gedanken, A [1 ]
机构：
[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel
[2] Polytech Univ, Dept Chem Engn, Brooklyn, NY 11201 USA
[3] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
来源：
APPLIED SURFACE SCIENCE | 2002年 / 201卷 / 1-4期
关键词：
nanoparticles; amorphous materials; magnetic properties;
D O I：
10.1016/S0169-4332(02)00895-4
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：
Amorphous iron nanoparticles obtained by the sonication of Fe(CO)(5) in decalin were coated by various surfactants using the self-assembled monolayer (SAM) technique. They have been shown previously to behave as superparamagnetic materials. These measurements are now extended to include information regarding their blocking temperature (T-B). The results show that for one functional group T-B is only slightly dependent on the length of the alkyl chain. On the other hand, the nature of the functional group bonded to the iron particles is strongly affecting T-B. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：191 / 195
页数：5
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