Proceedings of the International School of Physics "Enrico Fermi.", Volume 70N. Zanichelli, 1978 - Nuclear physics |
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Page 43
... ion enters octahedral sites and contributes 5μB per ion , but it also weakens the a - d interactions resulting in ... gadolinium iron garnets . IV.1 . Introduction . - In this part , we discuss the effects of substitution of diamagnetic ions ...
... ion enters octahedral sites and contributes 5μB per ion , but it also weakens the a - d interactions resulting in ... gadolinium iron garnets . IV.1 . Introduction . - In this part , we discuss the effects of substitution of diamagnetic ions ...
Page 223
... gadolinium spins at the GdGaG substrate . This surface term will have the form ( 4.34 ) H = --- surf Σ Bett SaaS - Joa Ho Σ · Gd ... ion anisotropy energy having the form ( 4.37 ) H surf = ΣΩ ( 5 % ) , where is the single - ion anisotropy ...
... gadolinium spins at the GdGaG substrate . This surface term will have the form ( 4.34 ) H = --- surf Σ Bett SaaS - Joa Ho Σ · Gd ... ion anisotropy energy having the form ( 4.37 ) H surf = ΣΩ ( 5 % ) , where is the single - ion anisotropy ...
Page 233
... ion anisotropy field coefficients , ( S ) is the thermal expectation value of the 7 component of the gadolinium spin , B. , is the effective molecular - field coupling coefficient between the magnetization of the gadolinium ions at the ...
... ion anisotropy field coefficients , ( S ) is the thermal expectation value of the 7 component of the gadolinium spin , B. , is the effective molecular - field coupling coefficient between the magnetization of the gadolinium ions at the ...
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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