Electron yield XAFS study of evaporated Co/Pd multilayers with various thickness ratios of Co to Pd sublayers: Simulations of the Co K-edge XAFS and fourier transforms
- Catholic Univ. Medical Coll., Seoul (Korea, Republic of). Dept. of Physics
- Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Materials Design Lab.
- Research Inst. of Industrial Science Technology, Pohang (Korea, Republic of)
- Korea Advanced Inst. of Science and Technology, Seoul (Korea, Republic of)
Electron-yield XAFS measurements using the NSLS were made on e-beam evaporated Co/Pd multilayers with various sublayer thicknesses and different thickness ratios of Co to Pd sublayers. The Co K-edge and the Pd K-edge XAFS data were obtained for the Co/Pd multilayers with sublayer thicknesses of 3[Angstrom]/ 4[Angstrom], 15[Angstrom]/4[Angstrom], 3[Angstrom]/15[Angstrom], 2.1[Angstrom]/13.5[Angstrom], and 2.2[Angstrom]/4.5[Angstrom]. Fourier transforms of Co K XAFS for most samples show a splitting of major peak, and the magnitude ratio of these split peaks varies systematically with the thickness ratio of the Pd sublayer to the Co sublayer, whereas the Fourier transforms of the Pd K XAFS for the same samples do not show a splitting of peaks. As a preliminary analysis, the Co K XAFS and the split peaks in the Fourier transform for the Co/Pd(3[Angstrom]/4[Angstrom]) case were simulated by using the FEFF calculations, and the Co K XAFS and the major peak in the fourier transform for the Co/Pd(15[Angstrom]/4[Angstrom]) case were also simulated consistently.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE; KOSEF; USDOE, Washington, DC (United States); Korea Science and Engineering Foundation (Korea, Republic of)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6907027
- Report Number(s):
- BNL-48084; CONF-9208160-5; ON: DE93003142
- Resource Relation:
- Conference: 7. international conference on x-ray absorption fine structure, Kobe (Japan), 23-29 Aug 1992
- Country of Publication:
- United States
- Language:
- English
Similar Records
Iron-oxide Aerogel and Xerogel Catalyst Formulations: Characterization by 57Fe Mössbauer and XAFS Spectroscopies
Characterization of Pd/c-Al2O3 Catalysts Prepared Using [Pd(hfac)2] in Liquid CO2
Related Subjects
COBALT
LAYERS
X-RAY SPECTRA
PALLADIUM
ELECTRONS
FINE STRUCTURE
FOURIER TRANSFORMATION
NSLS
PEAKS
THICKNESS
ACCELERATORS
CYCLIC ACCELERATORS
DIMENSIONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
INTEGRAL TRANSFORMATIONS
LEPTONS
METALS
PLATINUM METALS
RADIATION SOURCES
SPECTRA
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
TRANSFORMATIONS
TRANSITION ELEMENTS
360104* - Metals & Alloys- Physical Properties