Spin Waves and Magnetic Resonance in Rare-Earth Metals: Thermal, Applied-Field, and Magnetoelastic Effects

1968 ◽  
Vol 169 (2) ◽  
pp. 281-294 ◽  
Author(s):  
Bernard R. Cooper
Keyword(s):  
Rare Earth ◽  
Magnetic Resonance ◽  
Applied Field ◽  
Rare Earth Metals ◽  
Spin Waves

Theory of Magnetic Resonance in the Heavy Rare-Earth Metals

1962 ◽  
Vol 127 (1) ◽  
pp. 57-68 ◽  
Author(s):  
B. R. Cooper ◽  
R. J. Elliott ◽  
S. J. Nettel ◽  
H. Suhl
Keyword(s):  
Rare Earth ◽  
Magnetic Resonance ◽  
Rare Earth Metals ◽  
Heavy Rare Earth

scholarly journals Theory of Spin Waves in the Heavy Rare Earth Metals

1971 ◽  
Vol 49 (9) ◽  
pp. 1137-1161 ◽  
Author(s):  
D. A. Goodings ◽  
B. W. Southern
Keyword(s):  
Rare Earth ◽  
Spin Wave ◽  
Equations Of Motion ◽  
Rare Earth Metals ◽  
Spin Waves ◽  
Random Phase ◽  
Wave Interaction ◽  
Exchange Interactions ◽  
Special Cases ◽  
Anisotropic Exchange

A theory of spin waves for the spin structures found in the rare earth metals of h.c.p. crystal structure is described. The theory is developed for the conical spiral spin structure which contains the planar spiral, the nonplanar ferromagnet, and the planar ferromagnet as special cases. Included in the Hamiltonian are isotropic and anisotropic exchange interactions, single-ion crystal field terms, and magnetoelastic terms, both of the single-ion type (linear in the strains and up to fourth order in the spin operators) and of the two-ion type (linear in the strains and second order in the spin operators). The magnetoelastic effects are discussed in considerable detail, both in the "frozen lattice approximation" and in the opposite limit in which the strains closely follow the motion of the (uniformly) processing spins. Equations of motion for the spin operators are linearized with the help of the random phase approximation which makes it possible to express some spin-wave interaction effects in terms of powers of the reduced magnetization. Expressions for the spin-wave energies are given for the planar spiral, the nonplanar ferromagnet, and the planar ferromagnet, taking advantage of the simplifying features in each case.

Fluctuations and Spin Waves in Heavy Rare Earth Metals

1979 ◽  
pp. 445-445
Author(s):  
V. F. Mesheryakov ◽  
M. A. Savchenko ◽  
A. V. Stephanovich
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Spin Waves ◽  
Heavy Rare Earth

Nuclear magnetic resonance in rare earth metals

1979 ◽  
Vol 28 (3) ◽  
pp. 305-456 ◽  
Author(s):  
M.A.H. McCausland ◽  
I.S. Mackenzie
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Rare Earth ◽  
Magnetic Resonance ◽  
Rare Earth Metals ◽  
Nuclear Magnetic
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