Magnetic excitations in chromium

Journal Article · Sat Aug 01 04:00:00 EDT 1981 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.24.1312· OSTI ID:6263596

Fincher, Jr, C R; Shirane, G; Werner, S A

We have investigated the magnetic excitations of the spin-density wave in pure chromium using inelastic neutron scattering. Data on spin-wave modes originating from the incommensurate magnetic Bragg reflections show the polarization of the spin waves to be highly anisotropic. A new additional excitation is observed with a commensurate wave vector and is interpreted as a feature specific to the transverse spin-density wave. We also present scattering data near and above the Neel point T/sub N/. While we do not observe a divergence of the susceptibility at the incommensurate satellite positions for T approaching T/sub N/, there is a large increase in the diffuse scattering throughout a broad region of the reciprocal lattice near (0, 0, 1). We suggest connections between these data and the theory of itinerant magnetism developed in Moriya and Kawabata.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6263596
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 24:3; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ANGULAR MOMENTUM
ANISOTROPY
ANTIFERROMAGNETISM
CHROMIUM
COHERENT SCATTERING
CRYSTAL STRUCTURE
CRYSTALS
DATA
DIFFRACTION
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
EXPERIMENTAL DATA
INFORMATION
MAGNETISM
MAGNETS
METALS
MONOCRYSTALS
NEEL TEMPERATURE
NEUTRON DIFFRACTION
NUMERICAL DATA
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
SCATTERING
SPIN
SPIN WAVES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
TRANSITION TEMPERATURE