scholarly journals Observation of X-Ray Absorption Magnetic Circular Dichroism in well-Characterized Iron-Cobalt-Platinum Multilayers

1993 ◽  
Vol 313 ◽  
Author(s):  
A.F. Jankowski ◽  
G.D. Waddill ◽  
J.G. Tobin
Keyword(s):  
Circular Dichroism ◽  
Film Growth ◽  
Magnetic Circular Dichroism ◽  
Depth Profiling ◽  
X Ray ◽  
X Ray Scattering ◽  
Transmission Electron ◽  
Magnetron Sputter Deposition ◽  
X Ray Absorption ◽  
Circular Dichroïsm

ABSTRACTMagnetic circular dichroism in the Fe 2p x-ray absorption is observed in multilayers of (Fe9.5Å/Pt9.5Å)92. The Magnetization and helicity are both in the plane of this multilayer which is prepared by magnetron sputter deposition. This sample is part of a study to examine magnetization in the ternary multilayer system of FeCo/Pt. Lattice and layer pair spacings are measured using x-ray scattering. The atomic concentration profiles of the multilayer films are characterized using Auger electron spectroscopy coupled with depth profiling. Conventional and high resolution transmission electron microscopy are used to examine the thin film, growth morphology and atomic structure.

scholarly journals Magnetic X-Ray Circular Dichroism in Fe Co Pt Multilayers

1994 ◽  
Vol 343 ◽  
Author(s):  
J. G. Tobin ◽  
A. F. Jankowski ◽  
G. D. Waddill ◽  
P. A. Sterne
Keyword(s):  
Circular Dichroism ◽  
Depth Profiling ◽  
Grazing Incidence ◽  
X Ray ◽  
X Ray Scattering ◽  
Transmission Electron ◽  
Magnetron Sputter Deposition ◽  
Magnetron Sputter ◽  
X Ray Absorption ◽  
Circular Dichroïsm

ABSTRACTMagnetic x-ray circular dichroism in x-ray absorption has been used to investigate the ternary multilayer system, Fe Co Pt. Samples were prepared by planar magnetron sputter deposition and carefully characterized, using a variety of techniques such as grazing-incidence and high-angle x-ray scattering, Auger depth profiling and cross-section transmission electron microscopy. As previously reported, the Fe9.5Å Pt9.5Å exhibits a large dichroism in the Fe 2p absorption. Interestingly while the Co9.5Å Pt9.5Å has no measurable dichroism, the Fe4.7Å Co4.7Å Pt9.5Å sample has a dichroism at both the Fe 2p and Co 2p absorption edges. These and other results will be compared to slab calculation predictions. Possible explanations will be discussed.

scholarly journals Soft x-ray absorption spectroscopy and magnetic circular dichroism as operando probes of complex oxide electrolyte gate transistors

2020 ◽  
Vol 116 (20) ◽  
pp. 201905
Author(s):  
Biqiong Yu ◽  
Guichuan Yu ◽  
Jeff Walter ◽  
Vipul Chaturvedi ◽  
Joseph Gotchnik ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Absorption Spectroscopy ◽  
Magnetic Circular Dichroism ◽  
Complex Oxide ◽  
X Ray ◽  
X Ray Absorption ◽  
Circular Dichroïsm ◽  
Oxide Electrolyte

X-ray magnetic circular dichroism study of SmAl2 using the M4,5 x-ray absorption edges

2003 ◽  
Vol 93 (10) ◽  
pp. 8337-8339 ◽  
Author(s):  
S. S. Dhesi ◽  
P. Bencok ◽  
N. B. Brookes ◽  
G. van der Laan ◽  
R. M. Galéra
Keyword(s):  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
X Ray ◽  
X Ray Absorption ◽  
Circular Dichroïsm ◽  
Absorption Edges

Magnetic circular dichroism of 3d5/2→ 2p3/2resonant inelastic X-ray scattering at the HoLIII-edge in Ho3Fe5O12

2001 ◽  
Vol 8 (2) ◽  
pp. 428-430 ◽  
Author(s):  
Tetsuya Nakamura ◽  
Naomi Kawamura ◽  
Toshiaki Iwazumi ◽  
Hiroshi Maruyama ◽  
Akiri Urata ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
X Ray ◽  
X Ray Scattering ◽  
Circular Dichroïsm ◽  
Ray Scattering

First principles calculations of intersite disorder influence on the electronic structure and X-ray magnetic circular dichroism in CoFeMnSi Heusler alloy

2020 ◽  
Vol 31 (08) ◽  
pp. 2050109
Author(s):  
S. Uba ◽  
A. Bonda ◽  
L. Uba ◽  
L. V. Bekenov ◽  
V. N. Antonov
Keyword(s):  
Electronic Structure ◽  
Circular Dichroism ◽  
First Principles ◽  
Heusler Alloy ◽  
Magnetic Circular Dichroism ◽  
Magnetic Moments ◽  
X Ray ◽  
The Rich ◽  
X Ray Absorption ◽  
Circular Dichroïsm

Electronic structure, X-ray absorption, and magnetic circular dichroism (XMCD) spectra in the CoFeMnSi Heusler alloy were studied from first principles. Fully relativistic Dirac linear muffin-tin orbital band structure method was implemented with various exchange–correlation functionals tested. The supercell approach was used to study the influence of intersite disorder, at the levels of 6.25%, 12.5%, and 25% within transition metal sites, on the XMCD spectra at [Formula: see text] edges and spin polarization (SP) at the Fermi level. It is found that most sensitive to Fe–Mn and Co–Fe disorder are XMCD spectra at [Formula: see text] edges of Fe, while the sensitivity decreases from Mn to Co. It is shown that magnetic moments estimated with the use of magneto-optical (MO) sum rules agree with the ab initio calculated ones to within [Formula: see text], [Formula: see text], and [Formula: see text], for Co, Fe, and Mn, respectively. The calculated SP decreases from 99% for ordered CoFeMnSi alloy, to 96% upon 25% Co–Fe disorder, to 83% for Fe–Mn disorder, and to 42% in the case of Co–Mn disorder. The calculated spectra agree well with the available experimental data. The rich XMCD spectral structures are predicted from first principles at Fe, Co, Mn and Si [Formula: see text] edges.

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