Synthesis of air-stable iron-iron carbide nanocrystalline particles showing very high saturation magnetization

Sergey I. Nikitenko; Yuri Koltypin; Vladimir Markovich; Evgeny Rozenberg; Gad Gorodetsky; Aharon Gedanken

doi:10.1109/TMAG.2002.803222

Synthesis of air-stable iron-iron carbide nanocrystalline particles showing very high saturation magnetization

Sergey I. Nikitenko, Yuri Koltypin, Vladimir Markovich, Evgeny Rozenberg, Gad Gorodetsky, Aharon Gedanken

Department of Chemistry

Research output: Contribution to journal › Conference article › peer-review

13 Scopus citations

Abstract

Initial results on synthesis, magnetic properties and time stability of iron-iron carbide nanoparticles are presented. It is shown that as-prepared (after sonochemical synthesis in solution) material consists of small iron particles (d < 10 nm) embedded in a polymeric matrix. It was found to be super-paramagnetic. Consequent thermal annealing of as-prepared material at temperatures up to 1073 K in argon results, first, in the growth of the iron particles up to 150 nm. Second, the obtained powders become ferromagnetic. Third, such powders are air-stable due to the formation of an interracial iron carbide layer during annealing. The air-stability of the iron-iron carbide powder was tested by time dependence measurements of its resistivity.

Original language	English
Pages (from-to)	2592-2594
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	38
Issue number	5 I
DOIs	https://doi.org/10.1109/TMAG.2002.803222
State	Published - Sep 2002
Event	2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands Duration: 28 Apr 2002 → 2 May 2002

Bibliographical note

Funding Information:
The work was done with the financial support from a collaborative project with Central Council for Research in Homeopathy (CCRH), Under Ministry of AYUSH, Govt. of India (F. No. 6-01/14-15/CCRH/cash/11515)

Keywords

Fe
Fe C
Magnetic nanoparticles
Time stability

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10.1109/TMAG.2002.803222

Cite this

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title = "Synthesis of air-stable iron-iron carbide nanocrystalline particles showing very high saturation magnetization",

abstract = "Initial results on synthesis, magnetic properties and time stability of iron-iron carbide nanoparticles are presented. It is shown that as-prepared (after sonochemical synthesis in solution) material consists of small iron particles (d < 10 nm) embedded in a polymeric matrix. It was found to be super-paramagnetic. Consequent thermal annealing of as-prepared material at temperatures up to 1073 K in argon results, first, in the growth of the iron particles up to 150 nm. Second, the obtained powders become ferromagnetic. Third, such powders are air-stable due to the formation of an interracial iron carbide layer during annealing. The air-stability of the iron-iron carbide powder was tested by time dependence measurements of its resistivity.",

keywords = "Fe, Fe C, Magnetic nanoparticles, Time stability",

author = "Nikitenko, {Sergey I.} and Yuri Koltypin and Vladimir Markovich and Evgeny Rozenberg and Gad Gorodetsky and Aharon Gedanken",

note = "Funding Information: The work was done with the financial support from a collaborative project with Central Council for Research in Homeopathy (CCRH), Under Ministry of AYUSH, Govt. of India (F. No. 6-01/14-15/CCRH/cash/11515); 2002 International Magnetics Conference (Intermag 2002) ; Conference date: 28-04-2002 Through 02-05-2002",

year = "2002",

month = sep,

doi = "10.1109/TMAG.2002.803222",

language = "אנגלית",

volume = "38",

pages = "2592--2594",

journal = "IEEE Transactions on Magnetics",

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TY - JOUR

T1 - Synthesis of air-stable iron-iron carbide nanocrystalline particles showing very high saturation magnetization

AU - Nikitenko, Sergey I.

AU - Koltypin, Yuri

AU - Markovich, Vladimir

AU - Rozenberg, Evgeny

AU - Gorodetsky, Gad

AU - Gedanken, Aharon

N1 - Funding Information: The work was done with the financial support from a collaborative project with Central Council for Research in Homeopathy (CCRH), Under Ministry of AYUSH, Govt. of India (F. No. 6-01/14-15/CCRH/cash/11515)

PY - 2002/9

Y1 - 2002/9

N2 - Initial results on synthesis, magnetic properties and time stability of iron-iron carbide nanoparticles are presented. It is shown that as-prepared (after sonochemical synthesis in solution) material consists of small iron particles (d < 10 nm) embedded in a polymeric matrix. It was found to be super-paramagnetic. Consequent thermal annealing of as-prepared material at temperatures up to 1073 K in argon results, first, in the growth of the iron particles up to 150 nm. Second, the obtained powders become ferromagnetic. Third, such powders are air-stable due to the formation of an interracial iron carbide layer during annealing. The air-stability of the iron-iron carbide powder was tested by time dependence measurements of its resistivity.

AB - Initial results on synthesis, magnetic properties and time stability of iron-iron carbide nanoparticles are presented. It is shown that as-prepared (after sonochemical synthesis in solution) material consists of small iron particles (d < 10 nm) embedded in a polymeric matrix. It was found to be super-paramagnetic. Consequent thermal annealing of as-prepared material at temperatures up to 1073 K in argon results, first, in the growth of the iron particles up to 150 nm. Second, the obtained powders become ferromagnetic. Third, such powders are air-stable due to the formation of an interracial iron carbide layer during annealing. The air-stability of the iron-iron carbide powder was tested by time dependence measurements of its resistivity.

KW - Fe

KW - Fe C

KW - Magnetic nanoparticles

KW - Time stability

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DO - 10.1109/TMAG.2002.803222

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AN - SCOPUS:0036762002

SN - 0018-9464

VL - 38

SP - 2592

EP - 2594

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 5 I

T2 - 2002 International Magnetics Conference (Intermag 2002)

Y2 - 28 April 2002 through 2 May 2002

ER -

Synthesis of air-stable iron-iron carbide nanocrystalline particles showing very high saturation magnetization

Abstract

Bibliographical note

Keywords

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