Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 71
... ( magnetostriction ) . The magnetoelastic energy F ( a , ) originates from the interaction of the spin system with the lattice and causes a dependence of the ... MAGNETIC ANISOTROPY AND MAGNETOSTRICTION IN GARNETS 71 Magnetostriction constants.
... ( magnetostriction ) . The magnetoelastic energy F ( a , ) originates from the interaction of the spin system with the lattice and causes a dependence of the ... MAGNETIC ANISOTROPY AND MAGNETOSTRICTION IN GARNETS 71 Magnetostriction constants.
Page 74
For most garnets only two constants are sufficient to describe the magneto- strictive phenomena . If we consider ... magnetostriction constants , which for positive values indicate an elongation in that direction and for negative values ...
For most garnets only two constants are sufficient to describe the magneto- strictive phenomena . If we consider ... magnetostriction constants , which for positive values indicate an elongation in that direction and for negative values ...
Page 97
... magnetostriction constants for holmium iron garnet Ho , Fe3O12 [ 61 ] . The theoretical curves ( - - ) are based on eq . ( 5.5 ) , o extra- polated to zero field . dence of the magnetostriction constants has been performed [ 59 , 61 ] ...
... magnetostriction constants for holmium iron garnet Ho , Fe3O12 [ 61 ] . The theoretical curves ( - - ) are based on eq . ( 5.5 ) , o extra- polated to zero field . dence of the magnetostriction constants has been performed [ 59 , 61 ] ...
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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