Fe-Al2O3 nanocomposites prepared by high-energy ball milling

Søren Linderoth; Michael Stanley Pedersen

doi:10.1063/1.355544

Fe-Al₂O₃ nanocomposites prepared by high-energy ball milling

Søren Linderoth, Michael Stanley Pedersen

Department of Physics

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Abstract

Nanocomposites of α-Fe and α-Al₂O₃, prepared by high-energy ball milling, exhibit coercivities which are enhanced by about two orders of magnitude with respect to the bulk value. The degree of enhancement depends on the volume fraction (x_v) of Fe, with a maximum for x_v≈0.25. The effect is ascribed to the production of single-domain magnetic grains. Mössbauer spectroscopy reveals the presence of iron oxide phases which could not be seen by x-ray and electron diffraction measurements. Journal of Applied Physics is copyrighted by The American Institute of Physics.

Original language	English
Journal	Journal of Applied Physics
Volume	75
Issue number	10
Pages (from-to)	5867-5869
Number of pages	3
ISSN	0021-8979
DOIs	https://doi.org/10.1063/1.355544
Publication status	Published - 1994
Event	38th Annual Conference on Magnetism and Magnetic Materials - Minneapolis, United States Duration: 15 Nov 1993 → 18 Nov 1993 Conference number: 38

Conference

Conference	38th Annual Conference on Magnetism and Magnetic Materials
Number	38
Country/Territory	United States
City	Minneapolis
Period	15/11/1993 → 18/11/1993

Bibliographical note

Copyright (1994) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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Cite this

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title = "Fe-Al2O3 nanocomposites prepared by high-energy ball milling",

abstract = "Nanocomposites of α-Fe and α-Al2O3, prepared by high-energy ball milling, exhibit coercivities which are enhanced by about two orders of magnitude with respect to the bulk value. The degree of enhancement depends on the volume fraction (xv) of Fe, with a maximum for xv≈0.25. The effect is ascribed to the production of single-domain magnetic grains. M{\"o}ssbauer spectroscopy reveals the presence of iron oxide phases which could not be seen by x-ray and electron diffraction measurements. Journal of Applied Physics is copyrighted by The American Institute of Physics.",

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N2 - Nanocomposites of α-Fe and α-Al2O3, prepared by high-energy ball milling, exhibit coercivities which are enhanced by about two orders of magnitude with respect to the bulk value. The degree of enhancement depends on the volume fraction (xv) of Fe, with a maximum for xv≈0.25. The effect is ascribed to the production of single-domain magnetic grains. Mössbauer spectroscopy reveals the presence of iron oxide phases which could not be seen by x-ray and electron diffraction measurements. Journal of Applied Physics is copyrighted by The American Institute of Physics.

AB - Nanocomposites of α-Fe and α-Al2O3, prepared by high-energy ball milling, exhibit coercivities which are enhanced by about two orders of magnitude with respect to the bulk value. The degree of enhancement depends on the volume fraction (xv) of Fe, with a maximum for xv≈0.25. The effect is ascribed to the production of single-domain magnetic grains. Mössbauer spectroscopy reveals the presence of iron oxide phases which could not be seen by x-ray and electron diffraction measurements. Journal of Applied Physics is copyrighted by The American Institute of Physics.

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