Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 236
... equilibrium direction . The unit vectors é ,, é , and & are the standard unit vectors of a spherical co - ordinate system . On substituting eq . ( 5.8 ) into eq . ( 5.6 ) , the equation of motion takes the form ( 5.10 ) 1 d M y dt - M ...
... equilibrium direction . The unit vectors é ,, é , and & are the standard unit vectors of a spherical co - ordinate system . On substituting eq . ( 5.8 ) into eq . ( 5.6 ) , the equation of motion takes the form ( 5.10 ) 1 d M y dt - M ...
Page 244
... equilibrium orientation of M is found by setting both E , and E , cosec 0 equal to zero . Setting E. 0 implies that the equilibrium value of 0 is л / 2 . Setting E , 0 with 0/2 yields the relation = = ( 5.49 ) M.H. sin ( q - H ) + 2 +27 ...
... equilibrium orientation of M is found by setting both E , and E , cosec 0 equal to zero . Setting E. 0 implies that the equilibrium value of 0 is л / 2 . Setting E , 0 with 0/2 yields the relation = = ( 5.49 ) M.H. sin ( q - H ) + 2 +27 ...
Page 340
... equilibrium distribution from eq . ( 1 ) as ( 6 ' ) N , = ( Σ B1 , N , + IK , Σ N. o . ) / ( Io , + Σ Bri ) · i # r ir i ir Thus one can see that the equilibrium distribution keeps changing as I is in- creased until the saturation ...
... equilibrium distribution from eq . ( 1 ) as ( 6 ' ) N , = ( Σ B1 , N , + IK , Σ N. o . ) / ( Io , + Σ Bri ) · i # r ir i ir Thus one can see that the equilibrium distribution keeps changing as I is in- creased until the saturation ...
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absorption angle anisotropy constants antiferromagnetic Appl axis birefringence Bloch lines Bloch point bubble calculated cation cm-¹ Co² Co³ coefficient concentration contribution crystal field cubic Curie temperature curve diamagnetic dichroism direction of magnetization domain wall effects electron energy levels equations exchange experimental Fe2+ Fe³ ferrimagnetic ferromagnetic resonance film formula unit frequency GELLER GILLEO given Hamiltonian interaction ion moments Journ K₁ lattice constant line width linear magnetic anisotropy magnetic field magneto-optical magnetoelastic magnons measurements modes neutron diffraction observed obtained octahedral octahedral sites optical orbital oxygen paramagnetic parameters phonons photoinduced photomagnetic Phys polarization polycrystalline properties rare-earth ions rare-earth iron garnets relaxation resonance room temperature rotation sample shown in fig sin² specimens spin wave spin-orbit coupling spontaneous magnetization sublattice substitution surface symmetry temperature dependence tetrahedral theory tion torque transitions uniaxial anisotropy valence values vector velocity yttrium iron garnet