Critical magnetic scattering from the Heisenberg ferromagnet EuS

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6980321

Boeni, P; Shirane, G; Bohn, H G; Zinn, W

The paramagnetic scattering from the insulating, isotropic ferromagnet EuS is investigated at T/sub c/ along the (111) direction by means of inelastic neutron scattering. The energy width of the quasielastic scattering is proportional to q/sup z/ with z = 2.54 +- 0.10, in good agreement with the predictions of dynamical scaling theory (z = 2.5). z is, however, significantly larger than the value deduced from measurements along the (100) direction (z = 2.2). Near the zone boundary the magnetic scattering exhibits shoulders the shapes of which deviate from theoretical predictions based on the Heisenberg model. 19 refs., 3 figs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA); Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6980321
• Report Number(s): BNL-38821; CONF-861111-13; ON: DE87002141
• Country of Publication: United States
• Language: English

Related Subjects

656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
BARYON REACTIONS
CHALCOGENIDES
DIRECT REACTIONS
EUROPIUM COMPOUNDS
EUROPIUM SULFIDES
FERROMAGNETIC MATERIALS
HADRON REACTIONS
INELASTIC SCATTERING
MAGNETIC MATERIALS
MATERIALS
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE PROPERTIES
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RARE EARTH COMPOUNDS
SCATTERING
SPIN
SULFIDES
SULFUR COMPOUNDS