Micromagnetism and the microstructure of ferromagnetic solids

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Micromagnetism and the microstructure of ferromagnetic solids / Helmut Kronmüller, Manfred Fähnle

資料種別:

図書

出版情報:

Cambridge : Cambridge University Press, 2003

形態:

xv, 432 p. ; 26 cm

著者名:

ISBN:

9780521331357 [0521331358] (: hbk.)

書誌ID:

BA63248478

子書誌情報

フルテキスト

所蔵情報

他の版・巻

書誌詳細

注記:

Includes bibliographical references and index

主題:

Ferromagnetic materials--Structure; Magnetic structure; Microstructure

言語:

英語

目次情報:

Acknowledgements

Introduction / 1：

References

Units of magnetic properties / Appendix：

Magnetic Gibbs free energy / 2：

Introductionary remarks / 2.1：

Magnetic energy terms / 2.2：

Exchange energy / 2.2.1：

Short-range exchange interactions / 2.2.1.1：

Long-range exchange interactions / 2.2.1.2：

Magnetocrystalline anisotropy energy / 2.2.2：

Magnetostatic energies / 2.2.3：

Elastic potential of a ferromagnet / 2.2.4：

Strain tensor in ferromagnetic materials / 2.2.4.1：

Determination of strain tensors / 2.2.4.2：

Derivation of the magnetoelastic potential / 2.2.4.3：

Summary / 2.3：

Basic micromagnetic equilibrium conditions / 3：

Static micromagnetic equations / 3.1：

Micromagnetic equations in polar coordinates / 3.2：

Micromagnetic equations in terms of swirls and magnetic chares / 3.3：

Linearized micromagnetic equations / 3.4：

Domain walls in crystalline and amorphous solids / 4：

General remarks / 4.1：

Bloch walls / 4.2：

Effect of magnetostrictive deformations / 4.3：

Effect of internal stresses / 4.4：

Bloch walls in cubic crystals / 4.5：

Neel walls in bulk materials and thin films / 4.6：

Neel walls in bulk crystals / 4.6.1：

Neel walls in thin films / 4.6.3：

Phase diagrams of Neel and Bloch walls in thin films / 4.6.4：

Interaction of domain walls with defects / 5：

Interaction energy of domain walls with point defects / 5.1：

180[degree]-wall in amorphous alloys with uniaxial anisotropy / 5.3：

180[degree]-wall in [alpha]-Fe / 5.4：

Interaction forces of domain walls with point defects / 5.5：

Interaction of Bloch walls with dislocations / 5.6：

Straight dislocation lines / 5.6.1：

Dislocations of length l parallel to the domain wall plane (x, y) / 5.6.1.1：

Dislocations intersecting the domain walls / 5.6.1.2：

Straight dislocation dipoles / 5.6.2：

Dislocation loops / 5.6.3：

Interaction of domain walls with planar defects / 5.7：

Pinning by thin planar defects / 5.7.1：

Pinning by extended planar defects / 5.7.2：

Pinning by phase boundaries / 5.7.3：

Coercivity of modern magnetic materials / 6：

Micromagnetism of hard magnetic materials / 6.1：

Homogeneous rotation / 6.2.1：

Inhomogeneous rotation by the curling mode / 6.2.2：

Inhomogeneous rotation by the buckling mode / 6.2.3：

Critical diameters of single domain particles / 6.2.4：

Thermal stability limit / 6.2.4.1：

Crossover diameter for nucleation processes / 6.2.4.2：

Critical diameter for domain formation / 6.2.4.3：

Comparison with experiment / 6.2.5：

Nucleation under oblique magnetic fields / 6.3：

Curling mode / 6.3.1：

Nucleation in magnetically soft regions / 6.4：

Nucleation in inhomogeneous misaligned grains / 6.5：

Micromagnetic analysis of the coercive field of modern permanent magnets / 6.6：

Nucleation versus pinning / 6.6.1：

Analysis of the temperature dependence of the coercive field / 6.6.2：

Nanocrystalline and composite nanocrystalline magnets / 6.6.3：

Nanostructured, nanocrystalline Sm[subscript 2]Co[subscript 17]-based permanent magnets / 6.6.4：

Alternative coercivity models - the nucleus expansion model / 6.7：

Statistical theory of domain wall pinning / 7：

Statistical pinning potential / 7.1：

Applications of the statistical pinning theory / 7.2：

Dislocations in crystalline metals / 7.2.1：

Dislocation dipoles / 7.2.2：

Point defects / 7.2.3：

Amorphous alloys / 7.2.4：

Intrinsic fluctuations of exchange and local anisotropy energy / 7.2.4.1：

Internal stress sources / 7.2.4.2：

Coercive field due to surface irregularities / 7.2.4.3：

Nanocrystalline alloys / 7.2.5：

Law of approach to ferromagnetic saturation and high-field susceptibility / 8：

Approach to saturation in uniaxial crystals / 8.1：

Approach to saturation in cubic crystals / 8.3：

Approach to saturation in the presence of stress sources / 8.4：

Isotropic spherical defects / 8.4.1：

Dislocation groups / 8.4.3：

Anisotropy of the high-field susceptibility / 8.4.6：

Magnetostatic fluctuations / 8.4.8：

Magnetocrystalline fluctuations / 8.4.8.3：

Magnetoelastic fluctuations / 8.4.8.4：

Analysis of experimental results / 8.4.8.5：

Nonmagnetic holes and nonferromagnetic precipitations / 8.4.9：

Microstructure and domain patterns / 9：

Origin of domain patterns / 9.1：

Laminar domain patterns / 9.2：

Landau structure / 9.2.1：

Kittel structure / 9.2.2：

Partial Landau-Kittel structure / 9.2.3：

Kittel-type structure for in-plane easy direction / 9.2.4：

The [mu]* -correction / 9.2.5：

Branching of domains in hard magnetic materials / 9.2.6：

Domain patterns in amorphous alloys / 9.3：

As-quenched amorphous alloys / 9.3.1：

Magnetic annealing of amorphous alloys / 9.3.2：

Domain structure and magnetization processes / 9.3.3：

Stress-induced magnetic anisotropy / 9.3.4：

Stripe domains in thin ferromagnetic films / 9.4：

Dislocations and domain patterns / 9.5：

Domain patterns in plastically deformed Ni-single crystals / 9.5.1：

Domain patterns in plastically deformed Fe-single crystals / 9.5.3：

Micromagnetic background of the magnetoelastic coupling energy due to dislocations / 9.5.4：

Ripple structures / 9.5.5：

Magnetic after-effects in amorphous alloys / 10：

Double-well model of magnetic after-effects in amorphous alloys / 10.1：

Stabilization energy of domain walls / 10.3：

Formation of induced anisotropy / 10.4：

Basic experimental results / 10.5：

Concluding remarks / 10.6：

Magnetostriction in amorphous and polycrystalline ferromagnets / 11：

Outline of the problems / 11.1：

Polycrystalline model of amorphous ferromagnets / 11.2：

Basic computational ideas / 11.3：

Mathematical formalism / 11.4：

Balance-of-force method / 11.4.1：

Incompatibility method / 11.4.2：

Zeroth- and first-order terms / 11.4.3：

Results for the saturation magnetostriction of ferromagnets / 11.5：

Field dependence of magnetostriction / 11.6：

Appendix

Micromagnetic theory of phase transitions in spatially disordered spin systems / 12：

Classification of disordered spin systems / 12.1：

Phase transition in random exchange ferromagnets / 12.2：

Critical behaviour / 12.2.1：

Crossover regime to mean field behaviour / 12.2.2：

Molecular field theory and Landau-Ginzburg theory / 12.3：

Extended Landau-Ginzburg theory / 12.4：

Correlated molecular field theory / 12.5：

Physical motivation / 12.5.1：

Calculation of the paramagnetic zero-field susceptibility / 12.5.2：

Random ferrimagnets, spin glasses and random anisotropy magnets / 12.6：

Dynamic correlated molecular field theory / 12.7：

Computational micromagnetism of thin platelets and small particles / 13：

Applications of the finite difference method / 13.1：

Applications of the finite element method / 13.3：

Discretization and adaptive mesh refinement / 13.3.1：

Discretization of the Gibbs free energy used for computational micromagnetism / 13.3.2：

Magnetic structures and magnetization processes in thin platelets / 13.3.3：

Magnetic structures and magnetization processes in small particles / 13.3.4：

Soft magnetic particles in a hard magnetic matrix / 13.3.5：

Assemblies of nanocrystalline grains / 13.3.6：

Computational micromagnetism of dynamic magnetization processes / 14：

Landau-Lifshitz and Gilbert equations / 14.1：

Characteristic time ranges / 14.2：

Magnetization reversal in thin films / 14.3：

Discretization of the Landau-Lifshitz-Gilbert equation / 14.4：

Dynamic nucleation field / 14.5：

Dynamics of thermally activated reversal processes / 14.6：

Thermal fluctuations / 14.6.1：

Thermally activated relaxation / 14.6.2：

Scaling laws of the statistical pinning theory

Index

Acknowledgements

Introduction / 1：

References

Units of magnetic properties / Appendix：

Magnetic Gibbs free energy / 2：

Introductionary remarks / 2.1：

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