scholarly journals Long-range order and short-range order study on CoCrPt/Ti films by synchrotron x-ray scattering and extended x-ray absorption fine structure spectroscopy

2002 ◽  
Vol 91 (10) ◽  
pp. 7182 ◽  
Author(s):  
C. J. Sun ◽  
G. M. Chow ◽  
J. P. Wang ◽  
E. W. Soo ◽  
Y. K. Hwu ◽  
...  
Keyword(s):  
Fine Structure ◽  
Long Range ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Long Range Order ◽  
X Ray ◽  
X Ray Scattering ◽  
X Ray Absorption ◽  
Ti Films

Time-Resolved X-ray Scattering Investigation of Ordering Kinetics in Fe3Ai

1990 ◽  
Vol 205 ◽  
Author(s):  
B. Park ◽  
G. B. Stephenson ◽  
K. F. Ludwig ◽  
S. M. Allen
Keyword(s):  
Long Range ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Long Range Order ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Disordered Phase ◽  
Kinetics Of

AbstractWe have investigated the kinetics of the B2/DO3 transition in Fe3AI (28 at. %) using in situ time-resolved x-ray scattering. In these experiments, the evolution of the diffuse and/or Bragg intensity near the (½ ½ ½) DO3 superlattice peak is observed after the temperature of the sample is abruptly changed. H-ere we present results for the kinetics of re-equilibration of short-range order within the disordered (B2) phase, and of short- and long-range order within the ordered (DO3) phase. The short-range order is characterized by the diffuse peak intensity IDIFFUSE and correlation length ξ;the long-range order is characterized by the Bragg intensity IBRAGG. For quenches within the disordered phase, IDIFFUSE and ξ both relax exponentially at the same rate. The temperature dependence of the relaxation time shows evidence of a divergence at the critical temperature. For shallow quenches within the ordered phase, IBRAGG, IDIFFUSE and ξ all relax exponentially, but with different rates. However, for deep quenches within the ordered phase, IDIFFUSE and ξ do not show simple exponential relaxation. Instead, coarsening of short-range order into long-range order is seen, as in quenches from the disordered phase into the ordered phase. Investigation of up-quenches and down-quenches to the same temperature within the ordered phase indicates that disordering is faster than ordering.

X-ray absorption fine structure study of short-range order of iron in Fe/Al multilayers

2000 ◽  
Vol 87 (10) ◽  
pp. 7218-7226 ◽  
Author(s):  
Dirk C. Meyer ◽  
Kurt Richter ◽  
Peter Paufler ◽  
Peter Gawlitza ◽  
Thomas Holz
Keyword(s):  
Fine Structure ◽  
Short Range ◽  
Short Range Order ◽  
Structure Study ◽  
Range Order ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

Short-Range Order in Se-Rich Ge–Se Glasses—An Extended X-Ray Absorption Fine Structure Study

1999 ◽  
Vol 145 (1) ◽  
pp. 253-259 ◽  
Author(s):  
Egil Gulbrandsen ◽  
Hege Britt Johnsen ◽  
Monica Endregaard ◽  
Tor Grande ◽  
Svein Stølen
Keyword(s):  
Fine Structure ◽  
Short Range ◽  
Short Range Order ◽  
Structure Study ◽  
Range Order ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

Short range order in bimetallic nanoalloys: An extended X-ray absorption fine structure study

2013 ◽  
Vol 138 (6) ◽  
pp. 064202 ◽  
Author(s):  
Anatoly I. Frenkel ◽  
Qi Wang ◽  
Sergio I. Sanchez ◽  
Matthew W. Small ◽  
Ralph G. Nuzzo
Keyword(s):  
Fine Structure ◽  
Short Range ◽  
Short Range Order ◽  
Structure Study ◽  
Range Order ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

The Evolution of Short-Range Order in Ti-Hf-Ni Alloys with Hydrogenation

2003 ◽  
Vol 805 ◽  
Author(s):  
Anne Sadoc ◽  
Van T. Huett ◽  
K. F. Kelton
Keyword(s):  
Fine Structure ◽  
Local Structure ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
X Ray ◽  
Preliminary Results ◽  
Ni Alloys ◽  
Ni Alloy ◽  
X Ray Absorption

ABSTRACTThe evolution of the short-range order in a Ti-Hf-Ni 3/2 approximant phase, has been studied as a function of hydrogenation by means of extended X-ray absorption fine structure (EXAFS). The local structure of the non-hydrogenated alloy has been derived from that of 1/1 Ti-Zr-Ni. After hydrogenation, drastic changes are observed in the local structure of Ti-Hf-Ni. Preliminary results of the EXAFS analysis are also presented for an amorphous Ti-Hf-Ni alloy.

Local Environment Around Barium Atoms in the Superconductor Y-Ba-Cu-O

1987 ◽  
Vol 99 ◽  
Author(s):  
A. Krol ◽  
F. Xu ◽  
L. Y. Jang ◽  
C. J. Sher ◽  
S. Spagna ◽  
...  
Keyword(s):  
Fine Structure ◽  
Local Structure ◽  
Short Range ◽  
Short Range Order ◽  
Local Environment ◽  
Range Order ◽  
Order Structure ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

ABSTRACTThe local structure around Ba atoms in the compound superconductor Y-Ba-Cu-O has been studied by measuring the extended x-ray absorption fine structure (EXAFS) near the Ba K edge. This technique is used to investigate the changes in the short range order structure when the system is doped with impurities.

Extended x-ray-absorption fine-structure investigation of short-range order ina-Ge1−xSnxalloys

1992 ◽  
Vol 46 (11) ◽  
pp. 6718-6723 ◽  
Author(s):  
S. Pascarelli ◽  
F. Boscherini ◽  
S. Mobilio ◽  
A. R. Zanatta ◽  
F. C. Marques ◽  
...  
Keyword(s):  
Fine Structure ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Structure Investigation ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption
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