磁性物理学和磁性材料 英文pdf电子书版本下载

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Chapter 1．Introduction 1

Chapter 2．The Origin of Atomic Moments 3

2.1．Spin and Orbital States of Electrons 3

2.2．The Vector Model of Atoms 5

Chapter 3．Paramagnetism of Free Ions 11

3.1．The Brillouin Function 11

3.2．The Curie Law 13

References 17

Chapter 4．The Magnetically Ordered State 19

4.1．The Heisenberg Exchange Interaction and the Weiss Field 19

4.2．Ferromagnetism 22

4.3．Antiferromagnetism 26

4.4．Ferrimagnetism 34

References 41

Chapter 5．Crystal Fields 43

5.1．Introduction 43

5.2．Quantum-Mechanical Treatment 44

5.3．Experimental Determination of Crystal-Field Parameters 50

5.4．The Point-Charge Approximation and Its Limitations 52

5.5．Crystal-Field-Induced Anisotropy 54

5.6．A Simplified View of 4f-Electron Anisotropy 56

References 57

Chapter 6．Diamagnetism 59

Reference 61

Chapter 7．Itinerant-Electron Magnetism 63

7.1．Introduction 63

7.2．Susceptibility Enhancement 65

7.3．Strong and Weak Ferromagnetism 66

7.4．Intersublattice Coupling in Alloys of Rare Earths and 3d Metals 70

References 73

Chapter 8．Some Basic Concepts and Units 75

References 83

Chapter 9．Measurement Techniques 85

9.1．The Susceptibility Balance 85

9.2．The Faraday Method 86

9.3．The Vibrating-Sample Magnetometer 87

9.4．The SQUID Magnetometer 89

References 89

Chapter 10．Caloric Effects in Magnetic Materials 91

10.1．The Specific-Heat Anomaly 91

10.2．The Magnetocaloric Effect 93

References 95

Chapter 11．Magnetic Anisotropy 97

References 102

Chapter 12．Permanent Magnets 105

12.1．Introduction 105

12.2．Suitability Criteria 106

12.3．Domains and Domain Walls 109

12.4．Cocrcivity Mechanisms 112

12.5．Magnetic Anisotropy and Exchange Coupling in Permanent-Magnet Materials Based on Rare-Earth Compounds 115

12.6．Manufacturing Technologies of Rare-Earth-Based Magnets 119

12.7．Hard Ferrites 122

12.8．Alnico Magnets 124

References 128

Chapter 13．High-Density Recording Materials 131

13.1．Introduction 131

13.2．Magneto-Optical Recording Materials 133

13.3．Materials for High-Density Magnetic Recording 139

References 145

Chapter 14．Soft-Magnetic Materials 147

14.1．Introduction 147

14.2．Survey of Materials 148

14.3．The Random-Anisotropy Model 156

14.4．Dependence of Soft-Magnetic Properties on Grain Size 158

14.5．Head Materials and Their Applications 159

14.5.1 High-Density Magnetic-Induction Heads 159

14.5.2 Magnetoresistive Heads 161

References 163

Chapter 15．Invar Alloys 165

References 170

Chapter 16．Magnetostrictive Materials 171

References 175

Author Index 177

Subject Index 179