Continuous and reversible change of the magnetic coupling in an Fe/Nb multilayer induced by hydrogen charging

被引：99

作者：

Klose, F

Rehm, C

Nagengast, D

Maletta, H

Weidinger, A

机构：

[1] Hahn-Meitner-Institut Berlin, Berlin, D-14109

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.78.1150

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show in this Letter that the magnetic coupling of a [26 Angstrom Fe/15 Angstrom Nb]x18 multilayer is changed in a continuous and reversible way by introducing hydrogen into the sample. The magnetic structure and its change during hydrogen charging (and the following decharging) is measured in situ by neutron reflectivity. The alteration of the magnetic coupling upon hydrogenation is confirmed by SQUID magnetization measurements. We attribute the change of the coupling to a change of the effective Fermi wave vector in Nb due to hydrogen uptake.

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页码：1150 / 1153

页数：4

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