Effects of a 10 T external magnetic field on the thermal decomposition of Fe, Ni, and Co acetyl acetonates

S. V. Pol; V. G. Pol; A. Gedanken; M. G. Sung; S. Asai

doi:10.1021/la800683m

Effects of a 10 T external magnetic field on the thermal decomposition of Fe, Ni, and Co acetyl acetonates

S. V. Pol, V. G. Pol, A. Gedanken, M. G. Sung, S. Asai

Department of Chemistry

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

7 Scopus citations

Abstract

The current investigation is centered on the thermal decomposition (700°C) of acetyl acetonates of Ni, Co, and Fe in a closed reactor that was conducted by employing an external magnetic field (MF) of 10 T. Interestingly, reactions of Co and Ni acetyl acetonates under a 10 T MF produce Co and Ni nanoparticles (NPs) coated with carbon, while Fe acetyl acetonate produces Fe₃O₄ uncoated with carbon. Additionally, it is observed that all the as-formed magnetic particles tend to align in one dimension along applied MF; thus, this process can be used to fabricate large arrays of magnetic nanoparticles. The effect of an applied MF to synthesize morphologically and compositionaily different products from corresponding precursors with their mesoscopic organization is the key theme of the present paper, explained with a plausible mechanism.

Original language	English
Pages (from-to)	7532-7537
Number of pages	6
Journal	Langmuir
Volume	24
Issue number	14
DOIs	https://doi.org/10.1021/la800683m
State	Published - 15 Jul 2008

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abstract = "The current investigation is centered on the thermal decomposition (700°C) of acetyl acetonates of Ni, Co, and Fe in a closed reactor that was conducted by employing an external magnetic field (MF) of 10 T. Interestingly, reactions of Co and Ni acetyl acetonates under a 10 T MF produce Co and Ni nanoparticles (NPs) coated with carbon, while Fe acetyl acetonate produces Fe3O4 uncoated with carbon. Additionally, it is observed that all the as-formed magnetic particles tend to align in one dimension along applied MF; thus, this process can be used to fabricate large arrays of magnetic nanoparticles. The effect of an applied MF to synthesize morphologically and compositionaily different products from corresponding precursors with their mesoscopic organization is the key theme of the present paper, explained with a plausible mechanism.",

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AU - Pol, S. V.

AU - Pol, V. G.

AU - Gedanken, A.

AU - Sung, M. G.

AU - Asai, S.

PY - 2008/7/15

Y1 - 2008/7/15

N2 - The current investigation is centered on the thermal decomposition (700°C) of acetyl acetonates of Ni, Co, and Fe in a closed reactor that was conducted by employing an external magnetic field (MF) of 10 T. Interestingly, reactions of Co and Ni acetyl acetonates under a 10 T MF produce Co and Ni nanoparticles (NPs) coated with carbon, while Fe acetyl acetonate produces Fe3O4 uncoated with carbon. Additionally, it is observed that all the as-formed magnetic particles tend to align in one dimension along applied MF; thus, this process can be used to fabricate large arrays of magnetic nanoparticles. The effect of an applied MF to synthesize morphologically and compositionaily different products from corresponding precursors with their mesoscopic organization is the key theme of the present paper, explained with a plausible mechanism.

AB - The current investigation is centered on the thermal decomposition (700°C) of acetyl acetonates of Ni, Co, and Fe in a closed reactor that was conducted by employing an external magnetic field (MF) of 10 T. Interestingly, reactions of Co and Ni acetyl acetonates under a 10 T MF produce Co and Ni nanoparticles (NPs) coated with carbon, while Fe acetyl acetonate produces Fe3O4 uncoated with carbon. Additionally, it is observed that all the as-formed magnetic particles tend to align in one dimension along applied MF; thus, this process can be used to fabricate large arrays of magnetic nanoparticles. The effect of an applied MF to synthesize morphologically and compositionaily different products from corresponding precursors with their mesoscopic organization is the key theme of the present paper, explained with a plausible mechanism.

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Effects of a 10 T external magnetic field on the thermal decomposition of Fe, Ni, and Co acetyl acetonates

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