Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 146
... Bloch line , considering x to be measured perpendicular to the line . If the Bloch line lies parallel to the film plane , it is called a horizontal Bloch line . The gradient of H , then implies a force - ( dE / dH , ) ( dH / dz ) , so ...
... Bloch line , considering x to be measured perpendicular to the line . If the Bloch line lies parallel to the film plane , it is called a horizontal Bloch line . The gradient of H , then implies a force - ( dE / dH , ) ( dH / dz ) , so ...
Page 162
half of a simple Bloch line without Bloch points is unfavorably oriented . It follows that reversing the twist sense in one half of the Bloch line lowers the energy unless the added energy of the necessary Bloch point is too great ...
half of a simple Bloch line without Bloch points is unfavorably oriented . It follows that reversing the twist sense in one half of the Bloch line lowers the energy unless the added energy of the necessary Bloch point is too great ...
Page 174
Bloch line is [ 42 ] ( 7.8 ) FL = ( 2ØM / y ) V1 × t + [ 4αME2 ( H „ ) / yQ3 E1 ( 0 ) ] V2 , where t = a unit vector ( with direction Vpx V0 ) tangent to the Bloch line , and E ( H ) is the Bloch - line energy [ 14 , 19 ] . A Bloch line ...
Bloch line is [ 42 ] ( 7.8 ) FL = ( 2ØM / y ) V1 × t + [ 4αME2 ( H „ ) / yQ3 E1 ( 0 ) ] V2 , where t = a unit vector ( with direction Vpx V0 ) tangent to the Bloch line , and E ( H ) is the Bloch - line energy [ 14 , 19 ] . A Bloch line ...
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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