AGING IN A MAGNETIC PARTICLE SYSTEM

被引：306

作者：

JONSSON, T ^{[1
]}

MATTSSON, J ^{[1
]}

DJURBERG, C ^{[1
]}

KHAN, FA ^{[1
]}

NORDBLAD, P ^{[1
]}

SVEDLINDH, P ^{[1
]}

机构：

[1] BANGLADESH UNIV ENGN & TECHNOL,DHAKA,BANGLADESH

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.75.4138

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The influence of dipolar interaction in a frozen ferrofluid has been experimentally studied. ferrofluid consisted of particles of gamma - Fe2O3 with mean diameter 70 Angstrom. Four samples with volume concentration of magnetic particles ranging from 0.03% to 17% have been investigated. The magnetic relaxation of the most concentrated particle system shows typical spin glass dynamics at low temperature, e.g., the relaxation depends on the time spent at constant temperature before applying the magnetic field-the system ages. The most diluted sample shows isolated particle dynamics and no aging.

引用

页码：4138 / 4141

页数：4

共 8 条

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