Effect of spin disorder on magnetic properties of nanostructured Ni-ferrite

Y. D. Zhang; S. H. Ge; H. Zhang; S. Hui; J. I. Budnick; W. A. Hines; M. J. Yacaman; M. Miki

doi:10.1063/1.1691553

Effect of spin disorder on magnetic properties of nanostructured Ni-ferrite

Y. D. Zhang, S. H. Ge, H. Zhang, S. Hui, J. I. Budnick, W. A. Hines, M. J. Yacaman, M. Miki

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

31 Scopus citations

Abstract

X-ray diffraction, transmission electron microscopy, and low temperature SQUID magnetometry were used for analyzing the effect of structural disorders on the magnetic properties of NiFe ₂O ₄ nanoparticles. By annealing the fine powder at different temperatures, powder samples with different particle sizes were made. Due to the surface disorders, the particle had a core or shell structure. The superexchage coupling, that created a magnetically immobilized region near the surface region with thickness significantly larger than that of the structurally inhomogeneous layer on the surface, was found to be a driving force for the magnetic configuration.

Original language	English (US)
Pages (from-to)	7130-7132
Number of pages	3
Journal	Journal of Applied Physics
Volume	95
Issue number	11 II
DOIs	https://doi.org/10.1063/1.1691553
State	Published - Jun 1 2004
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Effect of spin disorder on magnetic properties of nanostructured Ni-ferrite",

abstract = "X-ray diffraction, transmission electron microscopy, and low temperature SQUID magnetometry were used for analyzing the effect of structural disorders on the magnetic properties of NiFe 2O 4 nanoparticles. By annealing the fine powder at different temperatures, powder samples with different particle sizes were made. Due to the surface disorders, the particle had a core or shell structure. The superexchage coupling, that created a magnetically immobilized region near the surface region with thickness significantly larger than that of the structurally inhomogeneous layer on the surface, was found to be a driving force for the magnetic configuration.",

author = "Zhang, {Y. D.} and Ge, {S. H.} and H. Zhang and S. Hui and Budnick, {J. I.} and Hines, {W. A.} and Yacaman, {M. J.} and M. Miki",

year = "2004",

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doi = "10.1063/1.1691553",

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T1 - Effect of spin disorder on magnetic properties of nanostructured Ni-ferrite

AU - Zhang, Y. D.

AU - Ge, S. H.

AU - Zhang, H.

AU - Hui, S.

AU - Budnick, J. I.

AU - Hines, W. A.

AU - Yacaman, M. J.

AU - Miki, M.

PY - 2004/6/1

Y1 - 2004/6/1

N2 - X-ray diffraction, transmission electron microscopy, and low temperature SQUID magnetometry were used for analyzing the effect of structural disorders on the magnetic properties of NiFe 2O 4 nanoparticles. By annealing the fine powder at different temperatures, powder samples with different particle sizes were made. Due to the surface disorders, the particle had a core or shell structure. The superexchage coupling, that created a magnetically immobilized region near the surface region with thickness significantly larger than that of the structurally inhomogeneous layer on the surface, was found to be a driving force for the magnetic configuration.

AB - X-ray diffraction, transmission electron microscopy, and low temperature SQUID magnetometry were used for analyzing the effect of structural disorders on the magnetic properties of NiFe 2O 4 nanoparticles. By annealing the fine powder at different temperatures, powder samples with different particle sizes were made. Due to the surface disorders, the particle had a core or shell structure. The superexchage coupling, that created a magnetically immobilized region near the surface region with thickness significantly larger than that of the structurally inhomogeneous layer on the surface, was found to be a driving force for the magnetic configuration.

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JF - Journal of Applied Physics

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Effect of spin disorder on magnetic properties of nanostructured Ni-ferrite

Abstract

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