Aging behavior of spin glass fine particles in restricted space

K. Komatsu; T. Sato; P. Jönsson; H. Takayama

doi:10.1016/j.jmmm.2003.12.559

Aging behavior of spin glass fine particles in restricted space

K. Komatsu, T. Sato, P. Jönsson, H. Takayama

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We examined the isothermal aging in spin glass AuFe fine particles so as to study the length scale of droplet in comparison with the particle size. Relaxation rates S in spin glass AuFe fine particles were obtained at 15, 28 and 32K. A peak in S was observed at the observation time corresponding to the waiting time at 15K, but it was observed at a time shorter than the waiting time at 28K. The waiting time dependence of S is weakened at 32K. This suggests that the droplet size increases up to the particle size and the growth successively stops at high temperatures.

Original language	English
Pages (from-to)	1321-1322
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.559
Publication status	Published - 2004 May 1
Event	Proceedings of the International Conference on Magnetism - Rome, Italy Duration: 2003 Jul 27 → 2003 Aug 1

Keywords

Aging
Droplet
Fine particles
Spin glass

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2003.12.559

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title = "Aging behavior of spin glass fine particles in restricted space",

abstract = "We examined the isothermal aging in spin glass AuFe fine particles so as to study the length scale of droplet in comparison with the particle size. Relaxation rates S in spin glass AuFe fine particles were obtained at 15, 28 and 32K. A peak in S was observed at the observation time corresponding to the waiting time at 15K, but it was observed at a time shorter than the waiting time at 28K. The waiting time dependence of S is weakened at 32K. This suggests that the droplet size increases up to the particle size and the growth successively stops at high temperatures.",

keywords = "Aging, Droplet, Fine particles, Spin glass",

author = "K. Komatsu and T. Sato and P. J{\"o}nsson and H. Takayama",

year = "2004",

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doi = "10.1016/j.jmmm.2003.12.559",

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pages = "1321--1322",

journal = "Journal of Magnetism and Magnetic Materials",

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TY - JOUR

T1 - Aging behavior of spin glass fine particles in restricted space

AU - Komatsu, K.

AU - Sato, T.

AU - Jönsson, P.

AU - Takayama, H.

PY - 2004/5/1

Y1 - 2004/5/1

N2 - We examined the isothermal aging in spin glass AuFe fine particles so as to study the length scale of droplet in comparison with the particle size. Relaxation rates S in spin glass AuFe fine particles were obtained at 15, 28 and 32K. A peak in S was observed at the observation time corresponding to the waiting time at 15K, but it was observed at a time shorter than the waiting time at 28K. The waiting time dependence of S is weakened at 32K. This suggests that the droplet size increases up to the particle size and the growth successively stops at high temperatures.

AB - We examined the isothermal aging in spin glass AuFe fine particles so as to study the length scale of droplet in comparison with the particle size. Relaxation rates S in spin glass AuFe fine particles were obtained at 15, 28 and 32K. A peak in S was observed at the observation time corresponding to the waiting time at 15K, but it was observed at a time shorter than the waiting time at 28K. The waiting time dependence of S is weakened at 32K. This suggests that the droplet size increases up to the particle size and the growth successively stops at high temperatures.

KW - Aging

KW - Droplet

KW - Fine particles

KW - Spin glass

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U2 - 10.1016/j.jmmm.2003.12.559

DO - 10.1016/j.jmmm.2003.12.559

M3 - Conference article

AN - SCOPUS:2642577648

SN - 0304-8853

VL - 272-276

SP - 1321

EP - 1322

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

T2 - Proceedings of the International Conference on Magnetism

Y2 - 27 July 2003 through 1 August 2003

ER -

Aging behavior of spin glass fine particles in restricted space

Abstract

Keywords

ASJC Scopus subject areas

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