High-energy spin-density-wave correlated fluctuations in paramagnetic Cr + 5 at. % V

Conference · Sun Nov 01 00:00:00 EST 1992

OSTI ID:10102564

Werner, S A ^[1]; Fawcett, E ^[2]; Elmiger, M W; Shirane, G ^[3]

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1. Missouri Univ., Columbia, MO (United States). Dept. of Physics
2. Toronto Univ., ON (Canada). Dept. of Physics
3. Brookhaven National Lab., Upton, NY (United States)

Measurements of the magnetic fluctuations, termed spin-density-wave (SDW) paramagnons, in the nearly antiferromagnetic alloy Cr + 5 at.%V are extended up in energy to about 80 MeV. These fluctuating spin-spin correlations occur at incommensurate positions, corresponding to the SDW wavevector Q. Their characteristic energy is at least an order of magnitude larger than that of the magnetic fluctuations seen in the paramagnetic phase of pure Cr, but their intensity is more than two orders of magnitude smaller. We find that the dynamic susceptibility decreases by about 50% between temperature T = 10K and 300K.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10102564
• Report Number(s): BNL-48026; CONF-921201-7; ON: DE93003165; CNN: Grant PHY-9024608
• Resource Relation: Conference: 37. annual conference on magnetism and magnetic materials,Houston, TX (United States),1-4 Dec 1992; Other Information: PBD: [1992]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHROMIUM BASE ALLOYS
MAGNONS
SPIN WAVES
CHROMIUM ALLOYS
NEUTRON DIFFRACTION
MAGNETIC SUSCEPTIBILITY
360104
665400
PHYSICAL PROPERTIES
QUANTUM PHYSICS ASPECTS OF CONDENSED MATTER