Blocking temperatures of amorphous iron nanoparticles coated by various surfactants

G. Kataby; Yu Koltypin; A. Ulman; I. Felner; A. Gedanken

doi:10.1016/S0169-4332(02)00895-4

Blocking temperatures of amorphous iron nanoparticles coated by various surfactants

G. Kataby, Yu Koltypin, A. Ulman, I. Felner, A. Gedanken

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

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 .

Original language	English (US)
Pages (from-to)	191-195
Number of pages	5
Journal	Applied Surface Science
Volume	201
Issue number	1-4
DOIs	https://doi.org/10.1016/S0169-4332(02)00895-4
State	Published - Nov 30 2002

Keywords

Amorphous materials
Magnetic properties
Nanoparticles

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/S0169-4332(02)00895-4

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abstract = " 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 .",

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AU - Koltypin, Yu

AU - Ulman, A.

AU - Felner, I.

AU - Gedanken, A.

PY - 2002/11/30

Y1 - 2002/11/30

N2 - 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 .

AB - 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 .

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KW - Magnetic properties

KW - Nanoparticles

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Blocking temperatures of amorphous iron nanoparticles coated by various surfactants

Abstract

Keywords

ASJC Scopus subject areas

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