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微磁学中的驰豫过程=RELAXATION PROCESSES IN MICROMAGNETICS 英文 影印版PDF|Epub|txt|kindle电子书版本网盘下载
- 丰春光著 著
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- 出版时间：2014
- 标注页数：0页
- 文件大小：33MB
- 文件页数：206页
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图书目录
1 The Classical Magnetization Field1
1.1 Introduction1
1.2 Equations of motion4
1.2.1 Damping9
1.3 Approaching the Curie temperature11
2 Small motions of the Magnetization17
2.1 Introduction17
2.2 Models of small motions17
2.2.1 Distributive damping19
2.2.2 Instabilities and spin wave condensates21
3 Intrinsic Damping31
3.1 Introduction31
3.2 Magnetostrictive coupling31
3.2.1 Small samples32
3.2.2 Large,homogeneous samples35
3.3 Loss torque in magnetic metals43
3.3.1 Eddy current damping44
3.3.2 Direct coupling of conduction electrons to the magnetization field49
3.4 Fluctuations in medium properties57
3.5 Relaxation due to weakly coupled magnetic impurities60
3.5.1 Slow relaxation61
3.5.2 Corrections to the adiabatic limit64
3.6 Appendix 3A.Inclusion of displacement current in Section 3.3.167
4 Fluctuations71
4.1 Introduction71
4.2 Fluctuation-dissipation theorem74
4.3 Langevin equation,and generalized Langevin equation77
4.4 Fokker-Planck equation-cartesians85
4.4.1 Fokker-Planck equation in polar angles88
4.4.2 Fokker-Planck equation in the absence of well-defined canonical variables89
5 Magnetization Reversal in a Very Dilute Array of Small Particles97
5.1 Introduction97
5.2 General observations98
5.3 Reversal in 2d102
5.3.1 Reversal in the long time limit109
5.3.2 Intermediate time scales114
5.3.3 Applied field and anisotropy axis misaligned118
5.3.4 Relation to first-passage type theories119
5.4 Rotation in 3d122
6 Magnetization Reversal in Arrays of Particles and Continuous Media125
6.1 Introduction125
6.2 Relaxation due to magnetic moment interaction in a sparse medium127
6.2.1 Equations of motion for dipolar interaction128
6.2.2 A single pair130
6.3 More dense arrays of many interacting particles139
6.3.1 The Arnold web141
6.3.2 Relevance to magnetic relaxation and reversal143
6.3.3 Effective single-variable relaxation from causes other than chaos145
6.4 Magnetization reversal and the magnetization process in large,dense systems146
6.4.1 Simple model of magnetization reversal by domain wall motion149
6.4.2 Motion of a Bloch domain wall160
6.4.3 Magnetostatics and the magnetization process.Pre-existing domain walls163
6.5 Appendix 6A:Vortex solutions in cylinder and disc:stability considerations176
References185
Subject Index189