Open AccessLocal magnetic study for cluster-layered Fe/Cr nanostructures
Author(s) -
Takafumi Miyanaga,
Yûji Ikeda,
Y. Hasunuma,
Д. А. Пономарев,
В. И. Гребенников,
Yu. A. Babanov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1389/1/012146
Subject(s) - extended x ray absorption fine structure , magnetic circular dichroism , magnetic moment , cluster (spacecraft) , condensed matter physics , electrical resistivity and conductivity , materials science , absorption (acoustics) , magnetic structure , magnetization , absorption spectroscopy , magnetic field , physics , optics , spectral line , quantum mechanics , astronomy , computer science , composite material , programming language
Local magnetic structures of cluster-layered Fe/Cr thin films are studied by X-ray magnetic circular dichroism (XMCD) and extended X-ray absorption fine structure (EXAFS). The magnetic moment of Fe atoms evaluated from XMCD for Al 2 O 3 /Cr(70Å)/[Fe(1.2Å )/Cr(10.5Å)] 30 /Cr(12Å), which shows the minimum point in the resistivity, decreases as the temperature increases and disappears around the temperature of the minimum resistivity. EXAFS shows the local structure of this film around Fe atoms is rather disordered and it can be related the fluctuation of magnetic structure estimated from the theoretical analysis of the temperature dependence of magnetic moments.