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

页码：191 / 195

页数：5

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