Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 187
... momentum . The bubble equation of motion ( 6.11 ) pro- vides a basis for discussing inertial effects . In order to apply it we must ex- press the canonical momentum of eq . ( 6.15 ) in terms of Bloch - line co - ordinates . In ...
... momentum . The bubble equation of motion ( 6.11 ) pro- vides a basis for discussing inertial effects . In order to apply it we must ex- press the canonical momentum of eq . ( 6.15 ) in terms of Bloch - line co - ordinates . In ...
Page 189
... momentum » . There is no mechanical analogy for this concept , because we customarily think of an object with momentum as moving . However , the << stored momentum » concept is very useful , because such bubbles have a re- markable ...
... momentum » . There is no mechanical analogy for this concept , because we customarily think of an object with momentum as moving . However , the << stored momentum » concept is very useful , because such bubbles have a re- markable ...
Page 214
... momentum will vanish . Under these exceptional circumstances , the resonance frequency of the optic mode will move into the microwave region . The temperature at which the angular momentum vanishes is often near the temperature at which ...
... momentum will vanish . Under these exceptional circumstances , the resonance frequency of the optic mode will move into the microwave region . The temperature at which the angular momentum vanishes is often near the temperature at which ...
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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