Magnetic properties of thin Eu films on Gd(0001) studied by magnetic circular dichroism in photoemission

被引：0

作者：

Arenholz, E ^{[1
]}

Starke, K ^{[1
]}

Kaindl, G ^{[1
]}

机构：

[1] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany

来源：

MAGNETIC ULTRATHIN FILMS, MULTILAYERS AND SURFACES - 1997 | 1997年 / 475卷

关键词：

D O I：

10.1557/PROC-475-487

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic order of ultra-thin Eu films on Gd(0001) was studied in an element-specific and layer-resolved way using magnetic circular dichroism (MCD) in 4f photoemission (PE). It was found that Eu films up to 2 monolayers (ML) exhibit a high net magnetization parallel to that of the Gd substrate. For Eu coverages exceeding 2 ML, the ferromagnetic alignment of the Eu moments breaks down, except for the Eu interface layer. A comparison of the temperature dependences of the Eu-4f and Gd-4f MCD-PE signals for 1-ML-Eu/Gd(0001) with the results of a layer-resolved mean-field calculation results in values for the exchange-coupling constants within the Eu monolayer as well as between Eu and the Gd substrate.

引用

页码：487 / 492

页数：6