Magnetic relaxation and quantum tunneling in nanocrystalline particles

X. X. Zhang; R. Ziolo; E. C. Kroll; X. Bohigas; J. Tejada

doi:10.1016/0304-8853(94)00536-2

Magnetic relaxation and quantum tunneling in nanocrystalline particles

X. X. Zhang^*, R. Ziolo, E. C. Kroll, X. Bohigas, J. Tejada

^*Corresponding author for this work

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

16 Scopus citations

Abstract

Low-temperature magnetic relaxation phenomena have been studied in two samples consisting of nanocrystalline γ-Fe₂O₃ and polymer in either water (as ferrofluid) or in potassium silicate (as glass). The relaxation of the magnetization follows a logarithmic law and the magnetic viscosity, S, tends to be independent of temperature below 2.1 K for the glass sample, giving evidence of macroscopic quantum tunneling of the magnetization.

Original language	English (US)
Pages (from-to)	1853-1854
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	140-144
Issue number	PART 3
DOIs	https://doi.org/10.1016/0304-8853(94)00536-2
State	Published - Feb 1995
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/0304-8853(94)00536-2

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title = "Magnetic relaxation and quantum tunneling in nanocrystalline particles",

abstract = "Low-temperature magnetic relaxation phenomena have been studied in two samples consisting of nanocrystalline γ-Fe2O3 and polymer in either water (as ferrofluid) or in potassium silicate (as glass). The relaxation of the magnetization follows a logarithmic law and the magnetic viscosity, S, tends to be independent of temperature below 2.1 K for the glass sample, giving evidence of macroscopic quantum tunneling of the magnetization.",

author = "Zhang, {X. X.} and R. Ziolo and Kroll, {E. C.} and X. Bohigas and J. Tejada",

year = "1995",

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T1 - Magnetic relaxation and quantum tunneling in nanocrystalline particles

AU - Zhang, X. X.

AU - Ziolo, R.

AU - Kroll, E. C.

AU - Bohigas, X.

AU - Tejada, J.

PY - 1995/2

Y1 - 1995/2

N2 - Low-temperature magnetic relaxation phenomena have been studied in two samples consisting of nanocrystalline γ-Fe2O3 and polymer in either water (as ferrofluid) or in potassium silicate (as glass). The relaxation of the magnetization follows a logarithmic law and the magnetic viscosity, S, tends to be independent of temperature below 2.1 K for the glass sample, giving evidence of macroscopic quantum tunneling of the magnetization.

AB - Low-temperature magnetic relaxation phenomena have been studied in two samples consisting of nanocrystalline γ-Fe2O3 and polymer in either water (as ferrofluid) or in potassium silicate (as glass). The relaxation of the magnetization follows a logarithmic law and the magnetic viscosity, S, tends to be independent of temperature below 2.1 K for the glass sample, giving evidence of macroscopic quantum tunneling of the magnetization.

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U2 - 10.1016/0304-8853(94)00536-2

DO - 10.1016/0304-8853(94)00536-2

M3 - Article

AN - SCOPUS:0029244926

SN - 0304-8853

VL - 140-144

SP - 1853

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - PART 3

ER -

Magnetic relaxation and quantum tunneling in nanocrystalline particles

Abstract

ASJC Scopus subject areas

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