scholarly journals Magnetic and Structural Properties of Fe/Pd Multilayers Studied by Magnetic X-Ray Dichroism and X-Ray Absorption Spectroscopy

1994 ◽  
Vol 375 ◽  
Author(s):  
S. M. Mini ◽  
Eric E. Fullerton ◽  
A. Fontaine ◽  
C. H. Sowers ◽  
A. S. Bommannavar ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Fine Structure ◽  
Saturation Magnetization ◽  
Structural Properties ◽  
Absorption Spectroscopy ◽  
Iron Layer ◽  
Squid Magnetometry ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

AbstractThe results of magnetic circular x-ray dichroism (MCXD) measurements and extended x-ray absorption fine structure measurements (EXAFS) of the Fe K-edges of textured Fe(110)/Pd(111) multilayers are reported. The EXAFS results indicates that the iron in the system goes from bcc to a more densely packed system as the thickness of the iron layer is decreased. The magnetic properties were measured by SQUID magnetometry from 5 - 350 K. For all the samples, the saturation magnetization was significantly enhanced over the bulk values indicating the interface Pd atoms are polarized by the Fe layer. The enhancement corresponds to a moment of ≈2.5μB per interface Pd atom.

scholarly journals Magnetic Properties and X-ray Absorption Fine-Structure Spectra of CoMn2O4 Nanoparticles

2012 ◽  
Vol 10 (0) ◽  
pp. 643-646 ◽  
Author(s):  
Toshiki Miyasaka ◽  
Akinobu Kurokawa ◽  
Hiromasa Takeuchi ◽  
Shinya Yano ◽  
Takuya Yanoh ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Fine Structure ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

scholarly journals Extended X-ray absorption fine structure of bimetallic nanoparticles

2011 ◽  
Vol 2 ◽  
pp. 237-251 ◽  
Author(s):  
Carolin Antoniak
Keyword(s):  
Magnetic Properties ◽  
Fine Structure ◽  
Wavelet Transforms ◽  
Density Functional ◽  
Bimetallic Nanoparticles ◽  
Crystallographic Structure ◽  
Fept Nanoparticles ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

Electronic and magnetic properties strongly depend on the structure of the material, especially on the crystal symmetry and chemical environment. In nanoparticles, the break of symmetry at the surface may yield different physical properties with respect to the corresponding bulk material. A useful tool to investigate the electronic structure, magnetic behaviour and local crystallographic structure is X-ray absorption spectroscopy. In this review, recent developments in the field of extended X-ray absorption fine structure measurements and in the analysis methods for structural investigations of bimetallic nanoparticles are highlighted. The standard analysis based on Fourier transforms is compared to the relatively new field of wavelet transforms that have the potential to outperform traditional analysis, especially in bimetallic alloys. As an example, the lattice expansion and inhomogeneous alloying found in FePt nanoparticles is presented, and this is discussed below in terms of the influence of employed density functional theory calculations on the magnetic properties.

Illuminating surface atoms in nanoclusters by differential X-ray absorption spectroscopy

2014 ◽  
Vol 16 (48) ◽  
pp. 26528-26538 ◽  
Author(s):  
Charles S. Spanjers ◽  
Thomas P. Senftle ◽  
Adri C. T. van Duin ◽  
Michael J. Janik ◽  
Anatoly I. Frenkel ◽  
...  
Keyword(s):  
Fine Structure ◽  
Absorption Spectroscopy ◽  
Surface Restructuring ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption ◽  
Supported Pd

We use differential extended X-ray absorption fine structure (Δ-EXAFS) to monitor the Ar-induced surface restructuring of silica-supported Pd nanoclusters (1 nm diameter) at 77 K.

scholarly journals Geometric Structure Determination of N694C Lipoxygenase: A Comparative Near-Edge X-Ray Absorption Spectroscopy and Extended X-Ray Absorption Fine Structure Study

2008 ◽  
Vol 47 (24) ◽  
pp. 11543-11550 ◽  
Author(s):  
Ritimukta Sarangi ◽  
Rosalie K. Hocking ◽  
Michael L. Neidig ◽  
Maurizio Benfatto ◽  
Theodore R. Holman ◽  
...  
Keyword(s):  
Fine Structure ◽  
Absorption Spectroscopy ◽  
Structure Determination ◽  
Geometric Structure ◽  
Structure Study ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption
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