Dynamic magnetic behavior of cluster-glass ZnFe2O4 nanosystem

H. M. Widatallah; I. A. Al-Omari; F. Sives; M. B. Sturla; S. J. Stewart

doi:10.1016/j.jmmm.2008.02.118

Dynamic magnetic behavior of cluster-glass ZnFe₂O₄ nanosystem

H. M. Widatallah, I. A. Al-Omari, F. Sives, M. B. Sturla, S. J. Stewart^*

^*Corresponding author for this work

Physics

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

12 Citations (Scopus)

Abstract

We present an investigation on the dynamic magnetic behavior of nanosized zinc ferrites with different grain sizes (∼6-13 nm) and degree of inversion (∼0.2-0.4). We show that the observed behavior can be interpreted through the progressive blocking and freezing of interacting magnetic clusters formed due to the random non-equilibrium distribution of cations. Furthermore, the glassy character is more pronounced as the ferrite is more inverted, and this coincides with the grain/particle size increment.

Original language	English
Pages (from-to)	e324-e326
Journal	Journal of Magnetism and Magnetic Materials
Volume	320
Issue number	14
DOIs	https://doi.org/10.1016/j.jmmm.2008.02.118
Publication status	Published - Jul 2008

Keywords

Cluster glass
Nanoparticles
Zinc ferrite
ac Susceptibility

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2008.02.118

Cite this

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title = "Dynamic magnetic behavior of cluster-glass ZnFe2O4 nanosystem",

abstract = "We present an investigation on the dynamic magnetic behavior of nanosized zinc ferrites with different grain sizes (∼6-13 nm) and degree of inversion (∼0.2-0.4). We show that the observed behavior can be interpreted through the progressive blocking and freezing of interacting magnetic clusters formed due to the random non-equilibrium distribution of cations. Furthermore, the glassy character is more pronounced as the ferrite is more inverted, and this coincides with the grain/particle size increment.",

keywords = "Cluster glass, Nanoparticles, Zinc ferrite, ac Susceptibility",

author = "Widatallah, {H. M.} and Al-Omari, {I. A.} and F. Sives and Sturla, {M. B.} and Stewart, {S. J.}",

note = "Funding Information: We appreciate financial support by CONICET, Argentina (PIP 6524). dc Magnetic measurements were performed using the RN3M (Argentina) facilities. S.J.S. thanks A.G. Grunfeld for useful comments.",

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language = "English",

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TY - JOUR

T1 - Dynamic magnetic behavior of cluster-glass ZnFe2O4 nanosystem

AU - Widatallah, H. M.

AU - Al-Omari, I. A.

AU - Sives, F.

AU - Sturla, M. B.

AU - Stewart, S. J.

N1 - Funding Information: We appreciate financial support by CONICET, Argentina (PIP 6524). dc Magnetic measurements were performed using the RN3M (Argentina) facilities. S.J.S. thanks A.G. Grunfeld for useful comments.

PY - 2008/7

Y1 - 2008/7

N2 - We present an investigation on the dynamic magnetic behavior of nanosized zinc ferrites with different grain sizes (∼6-13 nm) and degree of inversion (∼0.2-0.4). We show that the observed behavior can be interpreted through the progressive blocking and freezing of interacting magnetic clusters formed due to the random non-equilibrium distribution of cations. Furthermore, the glassy character is more pronounced as the ferrite is more inverted, and this coincides with the grain/particle size increment.

AB - We present an investigation on the dynamic magnetic behavior of nanosized zinc ferrites with different grain sizes (∼6-13 nm) and degree of inversion (∼0.2-0.4). We show that the observed behavior can be interpreted through the progressive blocking and freezing of interacting magnetic clusters formed due to the random non-equilibrium distribution of cations. Furthermore, the glassy character is more pronounced as the ferrite is more inverted, and this coincides with the grain/particle size increment.

KW - Cluster glass

KW - Nanoparticles

KW - Zinc ferrite

KW - ac Susceptibility

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