Propagation Characteristics and Excitation of Dipolar Spin Waves
Chapter 5 treated the resonant frequencies, dispersion relations, and mode fields for various dipolar spin modes. In this chapter, we expand on the properties of dipolar spin waves in thin films and describe how to excite them. We first establish approximate expressions for the Poynting vector and energy velocity valid in the magnetostatic approximation. Next, we apply the phenomenological description of magnetic damping introduced in Chapter 3 to the problem of dipolar spin wave attenuation. Finally, we derive orthogonality and normalization conditions and use these relations to calculate the excitation of dipolar spin waves by thin wires and conducting strips.
KeywordsSurface Wave Spin Wave Insertion Loss Radiation Resistance Return Loss
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