Existence of slowly fluctuating spin clusters at Neel temperature in the mixture Co1-xMnxCl2 center dot 2H(2)O

被引：11
|
作者：
Kubo, H [1 ]
Zenmyo, K [1 ]
Kato, T [1 ]
机构：
[1] FUKUOKA INST TECHNOL, DEPT PHYS, FUKUOKA 81102, JAPAN
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1996年 / 65卷 / 12期
关键词：
spin cluster; slow fluctuation; NMR;
D O I：
10.1143/JPSJ.65.4045
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Proton NMR measurements are carried out on the mixture Co1-xMnxCl2 . 2H(2)O with various Mn concentrations in the region from 1 to 4.2 K. For x = 0.54 proton NMR lines are observed near 17MHz at just Neel temperature in zero applied field. This result shows the existence of slowly fluctuating spin clusters freezing for more than 10(-4) sec with the spin cluster of the diameter of more than 14 Angstrom near Neel temperature. The temperature dependence of a Bragg reflection by neutron diffraction is reinterpreted in relation to the amount of such spin clusters.
引用
收藏
页码：4045 / 4049
页数：5
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