Magnetic Properties of Particles Formed by H2 Reduction of Co-Ferrite or γ-FeOOH Particles Wrapped with Exfoliated MoS2

T. L. Templeton; Y. Yoshida; X. Z. Li; A. S. Arrott; A. E. Curzon; F. Hamed; M. A. Gee; P. J. Schurer; J. L. LaCombe

doi:10.1109/20.280845

Magnetic Properties of Particles Formed by H₂ Reduction of Co-Ferrite or γ-FeOOH Particles Wrapped with Exfoliated MoS₂

T. L. Templeton, Y. Yoshida, X. Z. Li, A. S. Arrott, A. E. Curzon, F. Hamed, M. A. Gee, P. J. Schurer, J. L. LaCombe

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Abstract

Fine particles of α-Fe or Fe(Co) are prepared by the reduction in H2 of γ-FeOOH or Co-ferrite particles which have been wrapped in monomolecular layers of exfoliated MoS₂. The presence of the MoS₂ restricts coalescence of the starting particles while allowing the reduction to take place. Magnetic moments and coercivities are determined at temperature during processing. Results are given for magnetization measurements, electron microscopy, Mössbauer effect spectroscopy, and x-ray diffraction. Enhanced coercivities are observed when MoS₂is present. Surface pinnning is deduced from the approach to magnetic saturation.

Original language	English
Pages (from-to)	2625-2627
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	29
Issue number	6
DOIs	https://doi.org/10.1109/20.280845
Publication status	Published - Nov 1993
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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@article{d3f1167555114914a8b4fa805aa1db17,

title = "Magnetic Properties of Particles Formed by H2 Reduction of Co-Ferrite or γ-FeOOH Particles Wrapped with Exfoliated MoS2 ",

abstract = "Fine particles of α-Fe or Fe(Co) are prepared by the reduction in H2 of γ-FeOOH or Co-ferrite particles which have been wrapped in monomolecular layers of exfoliated MoS2. The presence of the MoS2 restricts coalescence of the starting particles while allowing the reduction to take place. Magnetic moments and coercivities are determined at temperature during processing. Results are given for magnetization measurements, electron microscopy, M{\"o}ssbauer effect spectroscopy, and x-ray diffraction. Enhanced coercivities are observed when MoS2is present. Surface pinnning is deduced from the approach to magnetic saturation.",

author = "Templeton, {T. L.} and Y. Yoshida and Li, {X. Z.} and Arrott, {A. S.} and Curzon, {A. E.} and F. Hamed and Gee, {M. A.} and Schurer, {P. J.} and LaCombe, {J. L.}",

note = "Funding Information: Daido Steel Co., Ltd., 2-30 Daido-cho, Minami-ku, Nagoya, Japan * Current address: Advanced Energy Technologies, Bumaby, BC, Canada Manuscript received Feb. 15. 1993 This work is supported by the Natural Sciences and Engineering Research Council of Canada.",

year = "1993",

month = nov,

doi = "10.1109/20.280845",

language = "English",

volume = "29",

pages = "2625--2627",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "6",

}

TY - JOUR

T1 - Magnetic Properties of Particles Formed by H2 Reduction of Co-Ferrite or γ-FeOOH Particles Wrapped with Exfoliated MoS2

AU - Templeton, T. L.

AU - Yoshida, Y.

AU - Li, X. Z.

AU - Arrott, A. S.

AU - Curzon, A. E.

AU - Hamed, F.

AU - Gee, M. A.

AU - Schurer, P. J.

AU - LaCombe, J. L.

N1 - Funding Information: Daido Steel Co., Ltd., 2-30 Daido-cho, Minami-ku, Nagoya, Japan * Current address: Advanced Energy Technologies, Bumaby, BC, Canada Manuscript received Feb. 15. 1993 This work is supported by the Natural Sciences and Engineering Research Council of Canada.

PY - 1993/11

Y1 - 1993/11

N2 - Fine particles of α-Fe or Fe(Co) are prepared by the reduction in H2 of γ-FeOOH or Co-ferrite particles which have been wrapped in monomolecular layers of exfoliated MoS2. The presence of the MoS2 restricts coalescence of the starting particles while allowing the reduction to take place. Magnetic moments and coercivities are determined at temperature during processing. Results are given for magnetization measurements, electron microscopy, Mössbauer effect spectroscopy, and x-ray diffraction. Enhanced coercivities are observed when MoS2is present. Surface pinnning is deduced from the approach to magnetic saturation.

AB - Fine particles of α-Fe or Fe(Co) are prepared by the reduction in H2 of γ-FeOOH or Co-ferrite particles which have been wrapped in monomolecular layers of exfoliated MoS2. The presence of the MoS2 restricts coalescence of the starting particles while allowing the reduction to take place. Magnetic moments and coercivities are determined at temperature during processing. Results are given for magnetization measurements, electron microscopy, Mössbauer effect spectroscopy, and x-ray diffraction. Enhanced coercivities are observed when MoS2is present. Surface pinnning is deduced from the approach to magnetic saturation.

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DO - 10.1109/20.280845

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 6

ER -

Magnetic Properties of Particles Formed by H₂ Reduction of Co-Ferrite or γ-FeOOH Particles Wrapped with Exfoliated MoS₂

Abstract

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