Magnetism of Co nanocluster films

Y. Qiang; Y. Qiang; R. F. Sabiryanov; R. F. Sabiryanov; S. S. Jaswal; S. S. Jaswal; Y. Liu; Y. Liu; H. Haberland; D. J. Sellmyer; D. J. Sellmyer

doi:10.1103/PhysRevB.66.064404

Magnetism of Co nanocluster films

Y. Qiang, Y. Qiang, R. F. Sabiryanov, R. F. Sabiryanov, S. S. Jaswal, S. S. Jaswal, Y. Liu, Y. Liu, H. Haberland, D. J. Sellmyer, D. J. Sellmyer

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

69 Scopus citations

Abstract

A cluster-beam technique is used to produce nearly monodispersed nanoclusters of Co while independently varying their size and concentration. The Co clusters are embedded in Cu and SiO₂ to form films with cluster size varying from 300 to 9000 atoms and Co concentration varying from 10 to 50 vol %. The Co magnetization (M_s) increases with increasing cluster size and decreases with increasing Co concentration for a given cluster size but is always less than the bulk value. First-principles calculations are used to analyze the experimental data in terms of the local environment effects at the cluster-matrix interface and spin-glass-like behavior due to the strong ferro- and antiferromagnetic intercluster exchange interactions for small separations.

Original language	English (US)
Article number	064404
Pages (from-to)	644041-644044
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.66.064404
State	Published - Aug 1 2002
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Magnetism of Co nanocluster films",

abstract = "A cluster-beam technique is used to produce nearly monodispersed nanoclusters of Co while independently varying their size and concentration. The Co clusters are embedded in Cu and SiO2 to form films with cluster size varying from 300 to 9000 atoms and Co concentration varying from 10 to 50 vol %. The Co magnetization (Ms) increases with increasing cluster size and decreases with increasing Co concentration for a given cluster size but is always less than the bulk value. First-principles calculations are used to analyze the experimental data in terms of the local environment effects at the cluster-matrix interface and spin-glass-like behavior due to the strong ferro- and antiferromagnetic intercluster exchange interactions for small separations.",

author = "Y. Qiang and Y. Qiang and Sabiryanov, {R. F.} and Sabiryanov, {R. F.} and Jaswal, {S. S.} and Jaswal, {S. S.} and Y. Liu and Y. Liu and H. Haberland and Sellmyer, {D. J.} and Sellmyer, {D. J.}",

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AU - Qiang, Y.

AU - Sabiryanov, R. F.

AU - Jaswal, S. S.

AU - Liu, Y.

AU - Haberland, H.

AU - Sellmyer, D. J.

PY - 2002/8/1

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N2 - A cluster-beam technique is used to produce nearly monodispersed nanoclusters of Co while independently varying their size and concentration. The Co clusters are embedded in Cu and SiO2 to form films with cluster size varying from 300 to 9000 atoms and Co concentration varying from 10 to 50 vol %. The Co magnetization (Ms) increases with increasing cluster size and decreases with increasing Co concentration for a given cluster size but is always less than the bulk value. First-principles calculations are used to analyze the experimental data in terms of the local environment effects at the cluster-matrix interface and spin-glass-like behavior due to the strong ferro- and antiferromagnetic intercluster exchange interactions for small separations.

AB - A cluster-beam technique is used to produce nearly monodispersed nanoclusters of Co while independently varying their size and concentration. The Co clusters are embedded in Cu and SiO2 to form films with cluster size varying from 300 to 9000 atoms and Co concentration varying from 10 to 50 vol %. The Co magnetization (Ms) increases with increasing cluster size and decreases with increasing Co concentration for a given cluster size but is always less than the bulk value. First-principles calculations are used to analyze the experimental data in terms of the local environment effects at the cluster-matrix interface and spin-glass-like behavior due to the strong ferro- and antiferromagnetic intercluster exchange interactions for small separations.

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Magnetism of Co nanocluster films

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