Soft x-ray circular polarizer using magnetic circular dichroism at the Fe L-3 line

被引：19

作者：

Kortright, JB

Kim, SK

Warwick, T

Smith, NV

机构：

[1] Materials Sciences Division, Lawrence Berkeley Natl. Laboratory, University of California, Berkeley

[2] Advanced Light Source, Lawrence Berkeley Natl. Laboratory, University of California, Berkeley

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 11期

关键词：

D O I：

10.1063/1.119932

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Linearly polarized soft x-rays are converted to elliptical polarization at the Fe L-3 line (707 eV) using magnetic circular dichroism (MCD) on transmission through thin Fe films. A linear polarizer measured the transmitted polarization at different incidence angles to vary as expected from a model for in-plane magnetization, and also to exhibit a weak MCD effect at normal incidence interpreted to originate from perpendicular interface anisotropy. An MCD signal from a downstream Fe film was produced by switching the helicity of x-rays transmitted through an upstream circular polarizer. Practical considerations for optimizing the production of circular polarization are discussed, and synchrotron radiation applications using these circular polarizing filters are suggested.

引用

页码：1446 / 1448

页数：3

共 19 条

[1] DIPOLAR MAGNETIC SURFACE ANISOTROPY IN FERROMAGNETIC THIN-FILMS WITH INTERFACIAL ROUGHNESS [J].