Ferromagnetic Resonance

Editor’s Foreword

Chapter I. Magnetic Resonance in Ferromagnetics

Chapter II. Phenomenological Theory of Ferromagnetic Resonance


1. Introduction


2. Equation of Motion for the Magnetization of a System of Weakly Interacting Magnetic Electron Moments


3. Effective Internal Field in a Ferromagnetic. General Formula for the Resonance Frequency


4. The Effect of Shape on the Resonance Frequency


5. The Effect of Crystal Magnetic Anisotropy on the Resonance Frequency


6. The Effect of Domain Structure on the Resonance Frequency


7. The Effect of Sub-lattice Structure of Ferromagnetic Semi-conductors on the Resonance Frequency


8. Phenomenological Approach to Damping in the Equation of Motion for the Magnetization of a Ferromagnetic


9. Thermodynamic Theory of Resonance Phenomena in Ferromagnetics


10. Line Width of Resonance Absorption


11. Solution of Equations of Motion in the Case of Weak Radio-Frequency Fields. Dynamic Permeability Tensor


12. Dispersion Relations in the Theory of Ferromagnetic Resonance

Chapter III. Magnetic Resonance in Ferromagnetics and Antiferromagnetics as Excitation of Spin Waves


1. Spin Waves or Magnons


2. Excitation of Ferromagnons by a High-frequency Electromagnetic Field


3. General Phenomenological Theory of Spin Waves in Ferromagnetics and Antiferromagnetics


4. Spin Waves in a Ferromagnetic including Anisotropy and Demagnetizing Fields


5. Spin Waves in an Antiferromagnetic


6. Spin Waves and Magnetic Resonance in Ferrimagnetics


7. Weak Ferromagnetism

Chapter IV. Relaxation Processes in Ferromagnetic Dielectrics

Chapter V. Features of Ferromagnetic Resonance in Metals

A. Influence of Skin Effect and Exchange Interaction on Ferromagnetic Resonance in Metals


1. Qualitative Examination


2. Initial Equations


3. Equivalent Permeability when a Specimen of Ferromagnetic Material is magnetized Parallel to its Surface


4. Discussion of Results and Comparison with Experiment


5. Equivalent Permeability when a Ferromagnetic Specimen is magnetized at Right Angles to its Surface

B. Influence of Conduction Electrons on Ferromagnetic Resonance


6. Energy of Interaction of a Ferromagnetic's Magnetization with Conduction Electrons


7. Spin-Electron Relaxation and Line Width


8. Resonance Frequencies in a Ferromagnetic Metal


9. Final Remarks

Chapter VI. Line Width of Ferromagnetic Resonance Absorption

A. Basic Experimental Data


1. Reasons for Line Width in Real Ferromagnetic Crystals


2. Line Width as a Function of Temperature in Single Crystals


3. Other Factors affecting Line Width

B. Survey of Theoretical Ideas on the Nature of the Line Width


4. Spin-Spin Relaxation


5. Line Width in Metals


6. Inhomogeneities in Magnetic Structure


7. Line Width in Rare-earth Iron Garnets


8. Iron Ions of Different Valencies in Octahedral Sites of Ferrospinel


9. Conclusions

Chapter VII. Non-Uniform Resonance and Spin Waves

Chapter VIII. Non-Linear Processes in Ferrites in U.H.F. Fields


1. Introduction


2. Solution of the Landau-Lifshitz Equation by the Method of Successive Approximations


3. "Law of Conservation" of the Degree of Magnetization


4. Detection


5. Frequency Doubling


6. Frequency Conversion in the Case of Two Transverse Alternating Fields


7. Frequency Conversion in the Case of Longitudinal and Transverse Alternating Fields


8. Ferrite Oscillator and Amplifier

Chapter IX. Eigen Oscillations and Non-Linear Phenomena in a Ferrite


1. Introduction


2. Non-uniform Modes of Precession in a Ferrite

(1) Basic Results of the Theory

(2) Methods of recognizing Resonance Lines

(3) Results of Experimental Study


3. Non-linear Phenomena in a Ferrite

(1) Basic Results of the Theory

(2) Results of Experimental Investigations


4. Conclusion

References

Author Index

Subject Index

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