期刊
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
卷 43, 期 7A, 页码 4327-4333出版社
INST PURE APPLIED PHYSICS
DOI: 10.1143/JJAP.43.4327
关键词
Fe/Si multilayer; magnetic exchange coupling; soft X-ray fluorescence; interface; interdiffusion
We measured the Si L-2,L-3 fluorescence spectrum of an antiferromagnetically coupled Fe (3.0 nm)/Si (1.3 nm) multilayer using undulator synchrotron radiation. We estimated the chemical composition and thickness of Fe silicide layers formed by interdiffusion by curve fitting analysis using the fluorescence spectra of amorphous Fe silicides. We clarified that the amorphous Si layer of 1.3 nm thickness changed in its middle region into amorphous FeSi2 of 0.7 nm thickness, which plays an important role in the strong anti ferromagnetic exchange coupling in the Fe/Si multilayer. It was also confirmed that soft-X-ray fluorescence spectroscopy has a high potential for analyzing buried interfaces nondestructively.
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