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E-raamat: Principles of Nanomagnetism

  • Formaat: PDF+DRM
  • Sari: NanoScience and Technology
  • Ilmumisaeg: 10-Jul-2017
  • Kirjastus: Springer International Publishing AG
  • Keel: eng
  • ISBN-13: 9783319594095
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Principles of NanomagnetismSuurem pilt
  • Formaat: PDF+DRM
  • Sari: NanoScience and Technology
  • Ilmumisaeg: 10-Jul-2017
  • Kirjastus: Springer International Publishing AG
  • Keel: eng
  • ISBN-13: 9783319594095
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The second edition of this book on nanomagnetism presents the basics and latest studies of low-dimensional magnetic nano-objects. It highlights the intriguing properties of nanomagnetic objects, such as thin films, nanoparticles, nanowires, nanotubes, nanodisks and nanorings as well as novel phenomena like spin currents. It also describes how nanomagnetism was an important factor in the rapid evolution of high-density magnetic recording and is developing into a decisive element of spintronics. Further, it presents a number of biomedical applications. With exercises and solutions, it serves as a graduate textbook.



This is the first monograph on nanomagnetism. It emphasizes general principles and mechanisms relevant to the understanding of the intriguing properties of nanomagnetic objects including thin films, nanoparticles, nanowires, nanodisks and nanorings.

1 The Basis of Nanomagnetism
1(24)
1.1 Introduction: The Importance of Nanomagnetism
1(1)
1.2 The Origin of Nanomagnetic Behavior
2(15)
1.2.1 Sample Dimensions and Characteristic Lengths
4(2)
1.2.2 Broken Translation Symmetry
6(11)
1.2.3 Nanomagnetic Samples and Dynamic Behavior
17(1)
1.3 Dimensionality and Critical Behavior
17(5)
References
22(3)
2 Magnetic Domains
25(46)
2.1 Introduction
25(7)
2.2 Interactions in Magnetic Materials
32(9)
2.2.1 Exchange Interaction
33(3)
2.2.2 Magnetostatic Energy
36(2)
2.2.3 Magnetic Anisotropy
38(2)
2.2.4 Magnetoelastic Energy and Magnetostriction
40(1)
2.3 Elements of Micromagnetism
41(7)
2.3.1 Equation of Motion
46(2)
2.4 Magnetic Domains
48(17)
2.4.1 Domain Wall Width
50(6)
2.4.2 Single-Domain Critical Diameters
56(2)
2.4.3 Domain Wall Motion
58(7)
2.5 Random Anisotropy
65(3)
References
68(3)
3 Magnetism of Small Particles
71(54)
3.1 Introduction
71(4)
3.2 Particle Size and Magnetic Behavior
75(7)
3.3 Superparamagnetism
82(9)
3.3.1 Superparamagnetism: The Langevin Function
90(1)
3.4 Surface Effects
91(3)
3.5 The Stoner--Wohlfarth Model
94(18)
3.5.1 Inhomogeneous Magnetization Reversal
105(3)
3.5.2 Precessional Magnetization Reversal
108(3)
3.5.3 Current-Induced Magnetization Reversal
111(1)
3.6 Interaction Between Particles
112(9)
References
121(4)
4 Magnetism of Thin Films and Multilayers
125(26)
4.1 Introduction
125(7)
4.1.1 Thin Films: Planar Systems
126(4)
4.1.2 Thin Films: Laterally Structured Systems
130(2)
4.2 Anisotropy in Thin Films
132(3)
4.3 Domain Walls and Magnetization Reversal in Thin Films
135(3)
4.4 Exchange Bias
138(6)
4.5 Interlayer Exchange Coupling
144(4)
References
148(3)
5 Magnetotransport and Spin Current Effects
151(50)
5.1 Introduction
151(9)
5.2 Spin Dependent Scattering and Giant Magnetoresistance (GMR)
160(9)
5.2.1 Valet--Fert Model for GMR
167(2)
5.3 Tunnel Magnetoresistance (TMR) and Other Magnetoresistance Effects
169(7)
5.3.1 The Anisotropic Magnetoresistance (AMR)
174(2)
5.4 Current-Induced Domain Wall Motion and Spin Transfer Torque (STT)
176(5)
5.5 Spin Current Effects: Spin Hall Effect, Spin Pumping, and Spin Thermal Effects
181(14)
References
195(6)
6 Magnetism of Nanodisks, Nanorings, Nanowires, and Nanotubes
201(30)
6.1 Introduction
201(1)
6.2 Nanodisks
202(8)
6.3 Nanorings
210(4)
6.4 Nanowires and Nanotubes
214(12)
References
226(5)
7 Magnetic Recording
231(18)
7.1 Introduction
231(1)
7.2 Principles of Magnetic Recording
232(5)
7.3 Novel Magnetic Recording Systems
237(9)
7.3.1 Nanodisk and Nanoring Memories
240(4)
7.3.2 Domain Wall and Skyrmion Memories
244(2)
References
246(3)
Solutions to the Exercises 249(8)
Appendix A The Hall Effect 257(4)
Appendix B Elements of Thermoelectricity 261(4)
Appendix C Units in Magnetism 265(4)
Appendix D Physical Constants 269(2)
Glossary 271(6)
Bibliography 277(20)
Material Index 297(12)
Symbol Index 309(4)
Author Index 313(6)
Subject Index 319
Alberto Passos Guimarães studied physics at the University of Rio de Janeiro and obtained his Ph.D. at the University of Manchester, England. He was a visiting scientist at MIT, Cambridge, and at the Physics Institute in Uppsala, Sweden. He has worked in the field of magnetism for several years, initially studying the magnetic properties of rare-earth intermetallic compounds with Mossbauer Spectroscopy and zero-field nuclear magnetic resonance (NMR), and also studied the Magnetocaloric Effect in intermetallic compounds. In recent years he has turned his attention to nanoscale systems, such as small particles, nanowires, nanorings and nanodisks studied with different experimental techniques and micromagnetic simulation. He is the author of Magnetism and Magnetic Resonance in solids (1998) and From Lodestone to Supermagnets: Understanding Magnetic Phenomena (2005), and has also been active in the popularization of science.





He is now Emeritus Researcher at the Brazilian Centerfor Research in Physics (CBPF) and he is a member of the Brazilian Academy of Sciences.
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