Spin-glass state of Fe/Cr multilayer structures with ultrathin iron layers

被引：16
|
作者：
Drovosekov, A. B. [1 ]
Kreines, N. M. [1 ]
Kholin, D. I. [1 ]
Korolev, A. V. [2 ]
Milyaev, M. A. [2 ]
Romashev, L. N. [2 ]
Ustinov, V. V. [2 ]
机构：
[1] Russian Acad Sci, PL Kapitza Phys Problems Inst, Moscow 119334, Russia
[2] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620041, Russia
来源：
JETP LETTERS | 2008年 / 88卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S0021364008140105
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The evolution of the magnetic properties of Fe/Cr Superlattices with a decrease in the nominal thickness of the iron layers down to atomic dimensions at which these layers are not continuous has been analysed. Investigations have been carried out with multilayer samples with Fe-layer thicknesses in a range of 2-6 angstrom and Cr-layer thicknesses of 10 and 20 angstrom. It has been found that the System with various temperatures exhibits various magnetic phases-superparmagnetic. magnetically ordered, and nonergodic-characterized by the dependence of the magnetization of the sample on its magnetic prehistory. It has been shown that the observed nonergodic phase has the properties of a spin glass. A qualitative phase diagram of the magnetic states of the system has been obtained.
引用
收藏
页码：118 / 122
页数：5
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