Frequency dependent magnetic susceptibility of Ni(OH)(2) monolayer nanoclusters

被引：6

作者：

Ichiyanagi, Y ^{[1
]}

Kimishima, Y ^{[1
]}

机构：

[1] YOKOHAMA NATL UNIV,FAC ENGN,DEPT PHYS,HODOGAYA KU,YOKOHAMA,KANAGAWA 240,JAPAN

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1996年 / 217卷

关键词：

magnetic susceptibility; Ni(OH)(2); nanoclusters;

D O I：

10.1016/S0921-5093(96)10294-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The a.c. magnetic susceptibility chi(ac) was measured for Ni(OH)(2) monolayer nanoclusters (Ni-MNC) in the temperature region 4.2-20 K. The frequency dependence of chi(ac) was investigated between 98 Hz and 8 kHz with an a.c. field amplitude of 1.8 Oe. The magnetic freezing temperature T-f was measured above 10 K using the real and imaginary parts of chi(ac), (chi(0)', chi(0) ''). The value of dynamic critical exponent zv was determined by applying a dynamic scaling law to the present results. It is considered that the finite two-dimensional ferromagnetic system of Ni-MNCs has magnetic order at 9.5 K, at which the non-linear a.c. magnetic susceptibility chi(2)' has an anomalous dip.

引用

页码：358 / 362

页数：5

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