Investigation of the paramagnetic phase of bcc iron using polarized neutron scattering

Journal Article · Tue Mar 20 00:00:00 EST 1984 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.333510· OSTI ID:5257359

Wicksted, J P; Shirane, G; Steinsvoll, O

Recent neutron scattering experiments performed at Brookhaven on Ni and Fe (4% Si) above T/sub C/ have demonstrated that a simple paramagnetic scattering function S(Q,..omega..)proportional(1/(kappa/sup 2//sub 1/ +q/sup 2/)) x (GAMMA/(GAMMA/sup 2/+..omega../sup 2/)) can explain the persistent spin wave ridges previously reported by Lynn and Mook. We present our new polarized beam results on pure Fe and describe in some detail the special problems associated with the unpolarized beam studies of magnetic cross sections at high temperatures.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5257359
• Journal Information: J. Appl. Phys.; (United States), Vol. 55:6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON
PARAMAGNETISM
BCC LATTICES
CURIE POINT
NEUTRON SPECTRA
SPIN FLIP
SPIN WAVES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
ELEMENTS
MAGNETISM
METALS
PHYSICAL PROPERTIES
SPECTRA
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
360104* - Metals & Alloys- Physical Properties