Recovery of SRO parameters and pairwise atomic displacements in a Fe{sub 46.5}Ni{sub 53.5} alloy

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:216310

Jiang, X ^[1]; Ice, G E; Sparks, C J ^[2]

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1. Sandia National Labs., CA (United States)
2. Oak Ridge National Lab., TN (United States); and others

Resonant (anomalous) x-ray scattering is used to alter the contrast between atoms nearby in the periodic table to recover local pair correlations. Both Warren-Cowley short-range order parameters and chemically specific interatomic distances are recovered from diffusely scattered x-ray intensities measured at three different x-ray energies (3{lambda} method). Analysis of the statistical and systematic errors shows that the average values for the number and kinds of first nearest neighbors are recovered to about one atom in one hundred and their interatomic distances to about {+-}0.002 {angstrom}.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 216310
• Report Number(s): CONF-941115-3; ON: DE96008684; TRN: 96:002538
• Resource Relation: Conference: Fall meeting of the Materials Research Society, Boston, MA (United States), 28 Nov - 2 Dec 1994; Other Information: PBD: 1994
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
IRON ALLOYS
ATOMIC DISPLACEMENTS
ALUMINIUM ALLOYS
INTERMETALLIC COMPOUNDS
INTERATOMIC DISTANCES
MOLECULAR STRUCTURE
ORDER PARAMETERS
CRYSTAL STRUCTURE