SPIN-WAVE THEORY OF MAGNETIC RESONANCE IN SPIRAL SPIN STRUCTURES: EFFECT OF AN APPLIED FIELD

Journal Article · Thu Aug 01 04:00:00 EDT 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.131.1043· OSTI ID:4680121

Cooper, B R; Elliott, R J

The possibiiity of performing magnetic resonance experiments in substances with spiral spin structures is studied. Particular attention is paid to the variation of spin arrangement and spin-wave spectrum with an applied magnetic field in the plane of the spiral. Perturbation techniques give resonance frequencies for small fields and for fields near the value, H/sub f/, required for ferromagnetic alignment. These results then allow a realistic extrapolation for the whole range of H. The effects of planar anisotropy and demagnetizing fields on the variation of spin arrangement and on the spin-wave frequencies are discussed. The actual conditions of resonance are examined for dysprosium and erbium. There is a discussion of the information that can be obtained from polycrystalline specimens with particular reference to the experimental results for MnAu/sub 2/. (auth)

• Research Organization: Atomic Energy Research Establishment, Harwell, Berks, Eng.
• NSA Number: NSA-17-031184
• OSTI ID: 4680121
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 131; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANISOTROPY
CONFIGURATION
DYSPROSIUM
ERBIUM
FERROMAGNETIC MATERIALS
FERROMAGNETISM
FREQUENCY
GOLD COMPOUNDS
INTERMETALLIC COMPOUNDS
LATTICES
MAGNETIC FIELDS
MAGNETIC RESONANCE
MAGNETISM
MANGANESE COMPOUNDS
NUMERICALS
PERTURBATION THEORY
PHYSICS
SPECTRA
SPIN
SPIN WAVES
VARIATIONS