One-pot synthesis of high magnetization air-stable FeCo nanoparticles by modified polyol method

Mohamed Abbas; Md Nazrul Islam; B. Parvatheeswara Rao; Tomoyuki Ogawa; Migaku Takahashi; Cheolgi Kim

doi:10.1016/j.matlet.2012.10.019

One-pot synthesis of high magnetization air-stable FeCo nanoparticles by modified polyol method

Mohamed Abbas, Md Nazrul Islam, B. Parvatheeswara Rao, Tomoyuki Ogawa, Migaku Takahashi, Cheolgi Kim

ENG - Electronic Engineering

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

64 Citations (Scopus)

Abstract

High magnetization FeCo nanoparticles with different Fe/Co ratios have been successfully synthesized by surfactant free simple modified polyol method. Polyethylene glycol (PEG) was used as solvent and reducing agent simultaneously in this synthesis process. All the synthesized samples of FeCo nanoparticles were annealed at 600°C before characterizations. X-ray diffraction (XRD) data on the samples confirm formation of a body-centered-cubic single phase structure in all the compositions. Transmission Electron Microscopy (TEM) data suggest that the annealed FeCo nanoparticles are of 50-90 nm in size. The use of PEG and the annealing procedure employed ensure that the obtained nanoparticles are stable in air. This observation is well supported by both the analysis of Energy Dispersive Spectrometry (EDS) and the images of TEM which establish the formation of a thin passive oxide layer over the FeCo nanoparticles thereby resulting in the stability of the nanoparticles. The physical Property Measurement System (PPMS) reveals that the Fe₆₀Co₄₀ composition among all the samples exhibit highest saturation magnetization of 230.14 emu/g at 5 K.

Original language	English
Pages (from-to)	326-329
Number of pages	4
Journal	Materials Letters
Volume	91
DOIs	https://doi.org/10.1016/j.matlet.2012.10.019
Publication status	Published - 2013 Jan 15

Keywords

Different composition
FeCo nanoparticles
High moment
Polyol process

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2012.10.019

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title = "One-pot synthesis of high magnetization air-stable FeCo nanoparticles by modified polyol method",

abstract = "High magnetization FeCo nanoparticles with different Fe/Co ratios have been successfully synthesized by surfactant free simple modified polyol method. Polyethylene glycol (PEG) was used as solvent and reducing agent simultaneously in this synthesis process. All the synthesized samples of FeCo nanoparticles were annealed at 600°C before characterizations. X-ray diffraction (XRD) data on the samples confirm formation of a body-centered-cubic single phase structure in all the compositions. Transmission Electron Microscopy (TEM) data suggest that the annealed FeCo nanoparticles are of 50-90 nm in size. The use of PEG and the annealing procedure employed ensure that the obtained nanoparticles are stable in air. This observation is well supported by both the analysis of Energy Dispersive Spectrometry (EDS) and the images of TEM which establish the formation of a thin passive oxide layer over the FeCo nanoparticles thereby resulting in the stability of the nanoparticles. The physical Property Measurement System (PPMS) reveals that the Fe60Co40 composition among all the samples exhibit highest saturation magnetization of 230.14 emu/g at 5 K.",

keywords = "Different composition, FeCo nanoparticles, High moment, Polyol process",

author = "Mohamed Abbas and {Nazrul Islam}, Md and {Parvatheeswara Rao}, B. and Tomoyuki Ogawa and Migaku Takahashi and Cheolgi Kim",

note = "Funding Information: This research was supported by the WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology ( R32-20026 ).",

year = "2013",

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doi = "10.1016/j.matlet.2012.10.019",

language = "English",

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AU - Abbas, Mohamed

AU - Nazrul Islam, Md

AU - Parvatheeswara Rao, B.

AU - Ogawa, Tomoyuki

AU - Takahashi, Migaku

AU - Kim, Cheolgi

N1 - Funding Information: This research was supported by the WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology ( R32-20026 ).

PY - 2013/1/15

Y1 - 2013/1/15

N2 - High magnetization FeCo nanoparticles with different Fe/Co ratios have been successfully synthesized by surfactant free simple modified polyol method. Polyethylene glycol (PEG) was used as solvent and reducing agent simultaneously in this synthesis process. All the synthesized samples of FeCo nanoparticles were annealed at 600°C before characterizations. X-ray diffraction (XRD) data on the samples confirm formation of a body-centered-cubic single phase structure in all the compositions. Transmission Electron Microscopy (TEM) data suggest that the annealed FeCo nanoparticles are of 50-90 nm in size. The use of PEG and the annealing procedure employed ensure that the obtained nanoparticles are stable in air. This observation is well supported by both the analysis of Energy Dispersive Spectrometry (EDS) and the images of TEM which establish the formation of a thin passive oxide layer over the FeCo nanoparticles thereby resulting in the stability of the nanoparticles. The physical Property Measurement System (PPMS) reveals that the Fe60Co40 composition among all the samples exhibit highest saturation magnetization of 230.14 emu/g at 5 K.

AB - High magnetization FeCo nanoparticles with different Fe/Co ratios have been successfully synthesized by surfactant free simple modified polyol method. Polyethylene glycol (PEG) was used as solvent and reducing agent simultaneously in this synthesis process. All the synthesized samples of FeCo nanoparticles were annealed at 600°C before characterizations. X-ray diffraction (XRD) data on the samples confirm formation of a body-centered-cubic single phase structure in all the compositions. Transmission Electron Microscopy (TEM) data suggest that the annealed FeCo nanoparticles are of 50-90 nm in size. The use of PEG and the annealing procedure employed ensure that the obtained nanoparticles are stable in air. This observation is well supported by both the analysis of Energy Dispersive Spectrometry (EDS) and the images of TEM which establish the formation of a thin passive oxide layer over the FeCo nanoparticles thereby resulting in the stability of the nanoparticles. The physical Property Measurement System (PPMS) reveals that the Fe60Co40 composition among all the samples exhibit highest saturation magnetization of 230.14 emu/g at 5 K.

KW - Different composition

KW - FeCo nanoparticles

KW - High moment

KW - Polyol process

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JO - Materials Letters

JF - Materials Letters

ER -

One-pot synthesis of high magnetization air-stable FeCo nanoparticles by modified polyol method

Abstract

Keywords

ASJC Scopus subject areas

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