scholarly journals Magnetic x-ray linear dichroism of ultrathin Fe-Ni alloy films

1997 ◽  
Author(s):  
F O Schumann ◽  
R F Willis ◽  
K W Goodman
Keyword(s):  
Linear Dichroism ◽  
Alloy Films ◽  
X Ray ◽  
Ni Alloy

Magnetic x-ray linear dichroism in the photoelectron spectroscopy of ultrathin magnetic alloy films

1996 ◽  
Vol 79 (8) ◽  
pp. 5626 ◽  
Author(s):  
J. G. Tobin ◽  
K. W. Goodman ◽  
G. J. Mankey ◽  
R. F. Willis ◽  
J. D. Denlinger ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Linear Dichroism ◽  
Magnetic Alloy ◽  
Alloy Films ◽  
X Ray

scholarly journals Effects of Symmetry on Circular and Linear Magnetic Dichroism in Angle-Resolved Photoemission Spectra of Gd/Y(0001) and Fe-Ni/Cu(001)

1997 ◽  
Vol 475 ◽  
Author(s):  
K.W. Goodman ◽  
J.G. Tobin ◽  
F.O. Schumann ◽  
R.F. Willis ◽  
J.W. Gammon ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
Linear Dichroism ◽  
Experimental Results ◽  
Alloy Films ◽  
Magnetic Dichroism ◽  
Ni Alloy ◽  
Magnetic Linear Dichroism ◽  
Circular Dichroïsm

ABSTRACTWe have observed circular and linear magnetic dichroisms in angle-resolved photoemission spectra of 50-monolayer Gd films grown on Y(0001) and 6-monolayer Fe-Ni alloy films grown on Cu(001). The 4/level of Gd and the Fe 3p level of the Fe-Ni alloy were measured. A different geometry was used for the magnetic circular dichroism than was used to measure the magnetic linear dichroism. The geometries were chosen so that the magnetic circular dichroism is predicted to be closely related to the magnetic linear dichroism for four-fold symmetric Fe-Ni/Cu(001) but not for three-fold symmetric Gd-Y(0001). Experimental results are presented.

scholarly journals X-ray Magnetic Linear Dichroism of Fe-Ni Alloys on Cu(111)

2001 ◽  
Vol 674 ◽  
Author(s):  
T.F. Johnson ◽  
S. Chiang ◽  
Y. Sato ◽  
D.A. Arena ◽  
S.A. Morton ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Film Thickness ◽  
Giant Magnetoresistance ◽  
Linear Dichroism ◽  
Disk Drive ◽  
Alloy Film ◽  
Alloy Films ◽  
X Ray ◽  
Ni Alloys ◽  
Magnetic Linear Dichroism

ABSTRACTWe have prepared FexNi1−x multilayers on Cu(111) in order to learn how to control the structure and magnetism of these thin alloy films, which are relevant to the giant magnetoresistance (GMR) effect used in magnetic disk drive heads. Using the Spectromicroscopy Facility (7.0.1.2) on Undulator Beamline 7.0 at the Advanced Light Source, we have measured X-ray magnetic linear dichroism (XMLD) signals from both Fe and Ni 3p lines for fourteen different thin Ni-Fe alloy films on Cu(111), with Fe concentration ranging from 9% to 84% and for a variety of film thicknesses. The Curie temperature for all of these samples was in the range 200K to 500K. For many of these films, the Curie temperature was considerably lower than was previously seen for similar films deposited on Cu(100). For a particular Fe concentration x, the Curie temperature increases with alloy film thickness. For a specific film thickness, the Curie temperature has a maximum near x≍0.4.

Hydrogenation Characteristics of Mg Based Alloy Prepared by Super Lamination Technique

2007 ◽  
Vol 561-565 ◽  
pp. 1609-1612 ◽  
Author(s):  
Ryota Mori ◽  
Hiroshi Miyamura ◽  
Shiomi Kikuchi ◽  
Koji Tanaka ◽  
Nobuhiko Takeichi ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Ambient Conditions ◽  
Hydrogen Storage Capacity ◽  
Alloy Films ◽  
Hydrogen Storage Properties ◽  
X Ray ◽  
Ni Alloy ◽  
Initial Activation ◽  
Storage Properties ◽  
Activation Property

In order to improve the hydrogenation property of Mg/Ti laminate composite, Ni was added as a third element. Hydrogen storage properties of the laminated Mg/Ti/Ni alloy films were studied. Laminated Mg/Ti/Ni multilayer alloy films were prepared by cold rolling of stacked Mg, Ti and Ni under ambient conditions. The stacked foils were subjected to repetition of rolling and stacking, resulting in super-laminated foils with the thickness less than 0.3mm, containing more than 15000 layers. Microstructures of the super-laminates were studied by scanning electron microscopy and X-ray diffractometry. Their hydrogenation behaviors were investigated by use of a Sieverts type apparatus. The hydrogen storage capacity (H/M) of the laminate with composition Mg/Ti/Ni=9.0/0.9/0.1 amounted H/M=1.6 at 573K, 0.4MPa. Initial activation property was improved by controlling the amount of Ni appropreately.

X-Ray Magnetic Linear Dichroism of Co 35 Fe 65 Alloy Films Annealed with and without Oxygen Gas

2013 ◽  
Vol 30 (10) ◽  
pp. 107501
Author(s):  
De-Lai Wang ◽  
Ming-Qi Cui ◽  
Dong-Liang Yang ◽  
Shi-Bo Xi ◽  
Li-Juan Liu
Keyword(s):  
Linear Dichroism ◽  
Alloy Films ◽  
X Ray ◽  
Magnetic Linear Dichroism ◽  
Oxygen Gas

scholarly journals Correlation Of Magnetic Dichroism in X-Ray Absorption and Photoelectron Emission using Ultrathin Magnetic Alloy Films

1996 ◽  
Vol 437 ◽  
Author(s):  
J.G. Tobin ◽  
K.W. Goodman ◽  
G.J. Mankey ◽  
R.F. Willis ◽  
J.D. Denlinger ◽  
...  
Keyword(s):  
Light Source ◽  
Linear Dichroism ◽  
Magnetic Alloy ◽  
Photoelectron Emission ◽  
Alloy Films ◽  
X Ray ◽  
Magnetic Dichroism ◽  
Advanced Light Source ◽  
First Results ◽  
X Ray Absorption

AbstractWe have begun a program to characterize magnetic alloy overlayers using both magnetic x-ray circular dichroism (MXCD) and magnetic x-ray linear dichroism (MXLD). This will allow a direct comparison of MXCD-absorption and MXLD-photoelectron emission. First results from the Advanced Light Source will be presented.

scholarly journals Anisotropy of X-ray Absorption Cross Section in CeCoGe3 Single Crystal

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 544
Author(s):  
Andrei Rogalev ◽  
Fabrice Wilhelm ◽  
Elena Ovchinnikova ◽  
Aydar Enikeev ◽  
Roman Bakonin ◽  
...  
Keyword(s):  
Cross Section ◽  
Absorption Cross Section ◽  
Linear Dichroism ◽  
X Rays ◽  
Absorption Cross ◽  
X Ray ◽  
Measured Absorption ◽  
Linearly Polarized ◽  
X Ray Absorption ◽  
Absorption Edges

Absorption spectra of two orthogonal linearly polarized x-rays in a single CeCoGe3 crystal were measured at the ID12 beamline of the ESRF for the energies near the K-edges of Ge, Co and near the L23 edges of Ce. The X-ray natural linear dichroism (XNLD) was revealed in the vicinity of all the absorption edges, which indicates a splitting of electronic states in a crystalline field. Mathematical modelling in comparison with experimental data allowed the isotropic and anisotropic parts of atomic absorption cross section in CeCoGe3 to be determined near all measured absorption edges. The calculations also show that the “average” anisotropy of the cross section close to the Ge K-edge revealed in the experiment is less than the partial anisotropic contributions corresponding to Ge atoms in two different Wyckoff positions.

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