scholarly journals Application of Mxcd to Magnetic Thin-Film Sensors

1996 ◽  
Vol 437 ◽  
Author(s):  
P. J. Bedrossian ◽  
J. G. Tobin ◽  
A. F. Jankowski ◽  
G. D. Waddill ◽  
T. C. Anthony ◽  
...  
Keyword(s):  
Thin Film ◽  
Error Estimates ◽  
Magnetic Moments ◽  
Spin Valve ◽  
Magnetic Multilayers ◽  
Magnetic Thin Film ◽  
X Ray ◽  
Thin Film Sensors ◽  
Spacer Layer ◽  
Circular Dichroïsm

AbstractWhile Magnetic X-ray Circular Dichroism (MXCD) has been applied extensively to the extraction of elemental magnetic moments in various magnetic multilayers, the configuration of actual devices imposes certain constraints on the application of MXCD to devices. Using a set of real, thin-film spin valve devices with varying Cu spacer layer thicknesses, we demonstrate the correlation between MXCD and magnetoresistance measurements on those devices as well as the restrictions on the interpretation of MXCD data imposed by both the device topology and the formulation of realistic error estimates.

MAGNETIC MICROSPECTROSCOPY BY A COMBINATION OF XMCD AND PEEM

2002 ◽  
Vol 09 (02) ◽  
pp. 877-881 ◽  
Author(s):  
S. IMADA ◽  
S. SUGA ◽  
W. KUCH ◽  
J. KIRSCHNER
Keyword(s):  
Circular Dichroism ◽  
Full Advantage ◽  
Quantitative Evaluation ◽  
Magnetic Circular Dichroism ◽  
Magnetic Moments ◽  
Magnetic Domain ◽  
X Ray ◽  
Circular Dichroïsm

The benefits of combining soft X-ray magnetic circular dichroism and photoelectron microscopy are demonstrated by applying this combination (XMCD–PEEM) not only to magnetic domain imaging but also to quantitative evaluation of the distribution of spin and orbital magnetic moments. The latter takes full advantage of the spectroscopic aspect of XMCD–PEEM.

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.

scholarly journals NitrogenK-edge soft X-ray natural circular dichroism of histidine thin film

2014 ◽  
Vol 502 ◽  
pp. 012038 ◽  
Author(s):  
Yudai Izumi ◽  
Masahito Tanaka ◽  
Yoshiaki Tanigawa ◽  
Maiko Tanabe ◽  
Yohei Momoki ◽  
...  
Keyword(s):  
Thin Film ◽  
Circular Dichroism ◽  
X Ray ◽  
Circular Dichroïsm

Induced Rh magnetic moments in Fe-Rh and Co-Rh alloys using x-ray magnetic circular dichroism

1995 ◽  
Vol 51 (17) ◽  
pp. 12037-12040 ◽  
Author(s):  
G. R. Harp ◽  
S. S. P. Parkin ◽  
W. L. O’Brien ◽  
B. P. Tonner
Keyword(s):  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
Magnetic Moments ◽  
X Ray ◽  
Circular Dichroïsm

CoPt/C NANOGRANULAR MAGNETIC THIN FILM

2005 ◽  
Vol 19 (14) ◽  
pp. 2261-2271 ◽  
Author(s):  
TONG LI ◽  
HUI YAN ◽  
HAI WANG ◽  
WU ZHENG
Keyword(s):  
Thin Film ◽  
Grain Size ◽  
Carbon Matrix ◽  
Magnetic Interactions ◽  
High Coercivity ◽  
Magnetic Thin Film ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Density Recording ◽  
Deposition Mode

Granular Co 30 Pt 70/ C and Co 45 Pt 55/ C films, consisting of nanoparticle CoPt phases embedded in a carbon matrix, have been made by co-sputtering from CoPt and C targets using a tandem deposition mode. X-ray diffraction shows the existence of hard CoPt phase embedded in an amorphous C matrix after annealing. The coercivities for CoPt/C are strongly dependent on C and Pt composition. Films with coercivity of up to 5.4 kOe and grain size of 7 nm can be obtained. The development of shoulder in hysteresis loop may be contributed to the co-existence of magnetic soft CoPt 3 and hard CoPt phases and the magnetic interactions between them. High remanence Mr/Ms (>0.8) found in our samples indicates the presence of the intergranular interactions in the samples. Observed positive contributions of δm also give evidence of the existence of exchange interaction. High coercivity and large Mr/Ms make granular CoPt/C film with magnetic nanoparticles very attractive for next-generation high-density recording.

X-ray scattering from two-dimensionally patterned magnetic thin film nanoscale arrays

2007 ◽  
Vol 41 (2-3) ◽  
pp. 163-167 ◽  
Author(s):  
D.S. Eastwood ◽  
T.P.A. Hase ◽  
M. van Kampen ◽  
R. Bručas ◽  
B. Hjörvarsson ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Thin Film ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Composition and Lattice Constant Evaluation of the Garnet System (Dy, Gd)3Ga5O12

1972 ◽  
Vol 16 ◽  
pp. 177-185
Author(s):  
L. A. Moudy ◽  
S. B. Austerman
Keyword(s):  
Thin Film ◽  
Rare Earth ◽  
Lattice Constant ◽  
Direct Measurement ◽  
Magnetic Thin Film ◽  
X Ray Diffraction ◽  
X Ray ◽  
Lattice Matching ◽  
Lattice Constants ◽  
Constant Control

AbstractCompositional and lattice constant control of non-magnetic garnet substrates are required for suitable lattice matching with epitaxially deposited magnetic thin film. Suitable substrates for this purpose are the simple and mixed rare earth garnets. Lattice constants were obtained on Czochralski grown crystals by conventional x-ray diffraction powder techniques with a precision of ± .0005Å. An x-ray fluorescence method was developed to determine crystal composition with a precision of ± 0.5 percent. The precision with which a can be determined indirectly by x-ray fluorescence is ± 0.0082Å, which is comparable with that from direct measurement.

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