Keywords:
Spin waves.
;
Magnons.
;
Dielectrics -- Magnetic properties.
;
Metals -- Magnetic properties.
;
Electronic books.
Description / Table of Contents:
Modern Problems in Condensed Matter Sciences, Volume 22.2: Spin Waves and Magnetic Excitations focuses on the processes, methodologies, reactions, principles, and approaches involved in spin waves and magnetic excitations, including magnetic systems, fluctuations, resonance, and spin dynamics. The selection first elaborates on spin-wave resonance in metals, excitations in low-dimensional magnetic systems, and the theory of magnetic excitations in disordered systems. Topics include spin waves in ferromagnets with weak fluctuations of the exchange interaction; dynamics of propagating excitations; models of two-dimensional magnetic systems; spin-wave resonance in bulk metals; and standing spin-wave resonance in thin films. The manuscript then ponders on spin dynamics of amorphous magnets and magnetic excitations in spin glasses, including dynamics in reentrant spin glasses, dynamics of classical spin glasses, spin dynamical theory, spin dynamics of locally isotropic materials, and effects of dilution. The book takes a look at nuclear spin and magnetoelastic excitations and magnetic impuritons in antiferromagnetic dielectric crystals. Discussions focus on coherent and incoherent impurity excitations, equations of motion and the energy of a magnetoelastic medium, magnetoelastic excitations near magnetic orientational phase transitions, and the effect of frequency pulling on the behavior of nuclear spin echo signals. The selection is a vital source of data for researchers interested in spin waves and magnetic excitations.
Type of Medium:
Online Resource
Pages:
1 online resource (512 pages)
Edition:
1st ed.
ISBN:
9780444598264
Series Statement:
Issn Series
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1180770
DDC:
530.4/1
Language:
English
Note:
Front Cover -- Spin Waves and Magnetic Excitations -- Copyright Page -- Table of Contents -- PREFACE TO THE SERIES -- INTRODUCTION -- CHAPTER 1. Spin- waves Resonance in Metals -- 1. Introduction -- 2. Basic theoretical considerations -- 3. Spin-wave resonance in bulk metals -- 4. Standing spin-wave resonance in thin films -- 5. Results and discussion -- 6. Conclusion -- References -- CHAPTER 2. Excitations in Low-Dimensional Magnetic Systems -- 1. Models of two-dimensional magnetic systems. Structure of the ground state -- 2. Static and dynamic excitations. Long-wavelength approximation -- 3. Static excitations in the 2D Ising model: domain lines -- 4. Static excitations in the XY model -- 5. Ferromagnetic Heisenberg model (statics) -- 6. Dynamics of propagating excitations -- 7. Dynamics of localized excitations -- 8. One-dimensional magnetism -- References -- CHAPTER 3. Theory of Magnetic Excitations in Disordered Systems -- 1. Introduction -- 2. Spin waves in disordered Heisenberg magnetic systems -- 3. Spin waves in ferromagnets with weak fluctuations of the exchange interaction -- 4. Heisenberg ferromagnets near the percolation threshold -- 5. Dilute ferromagnets with strong exchange energy fluctuations -- 6. Spin excitations at high frequencies -- 7. Magnetic two-level systems in disordered ferromagnets -- 8. Random anisotropy magnets -- 9. Electronic kinetic phenomena -- 10. Conclusion -- References -- CHAPTER 4. Spin Dynamics of Amorphous Magnets -- 1. Introduction -- 2. Spin dynamical theory -- 3. Experimental techniques -- 4. Spin dynamics of locally isotropic materials -- 5. Effects of dilution -- 6. Random anisotropy systems -- 7. Summary -- Acknowledgements -- References -- CHAPTER 5. Magnetic Excitations in Spin Glasses -- I. Introduction -- 2. Experimental -- 3. Dynamics of classical spin glasses.
,
4. Dynamics in reentrant spin glasses -- 5. Discussion -- Acknowledgements -- References -- CHAPTER 6. Magnetic Impuritons in Antiferromagnetic Dielectric Crystals -- 1. Introduction -- 2. Localized states (single-impurity approximation) -- 3. Localized and delocalized states in the Anderson and Lifshitz models -- 4. Coherent and incoherent impurity excitations, Impuritons -- 5. Conclusion -- Acknowledgment -- References -- CHAPTER 7. Magnetoelastic Excitations -- I. Introduction -- 2. Equations of motion and the energy of a magnetoelastic medium -- 3. Rotational invariance and the spectra -- 4. Magnetoelastic excitations near magnetic orientational phase transitions -- 5. Conclusions -- References -- CHAPTER 8. Nuclear Spin Excitations -- 1. Introduction -- 2. Features of NMR in magnetic materials -- 3. Effect of the Suhl-Nakamura interaction on the oscillations of the nuclear magnetization -- 4. Effect of frequency pulling on the behavior of nuclear spin echo signals -- 5. Parametric excitation of nuclear spins under conditions of frequency pulling, and the parametric echo -- 6. Effect of nuclear spin waves on steady-state NMR signals -- 7. Conclusion -- References -- AUTHOR INDEX -- SUBJECT INDEX -- MATERIALS INDEX.
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