Frank J. Owens

Physics of Magnetic Nanostructures (eBook, ePUB)

• Format: ePub

Produktbeschreibung

A comprehensive coverage of the physical properties and real-world applications of magnetic nanostructures This book discusses how the important properties of materials such as the cohesive energy, and the electronic and vibrational structures are affected when materials have at least one length in the nanometer range. The author uses relatively simple models of the solid state to explain why these changes in the size and dimension in the nanometer regime occur. The text also reviews the physics of magnetism and experimental methods of measuring magnetic properties necessary to understanding how nanosizing affects magnetism. Various kinds of magnetic structures are presented by the author in order to explain how nanosizing influences their magnetic properties. The book also presents potential and actual applications of nanomaterials in the fields of medicine and computer data storage. Physics of Magnetic Nanostructures: * Covers the magnetism in carbon and born nitride nanostructures, bulk nanostructured magnetic materials, nanostructured magnetic semiconductors, and the fabrication of magnetic nanostructures * Discusses emerging applications of nanomaterials such as targeted delivery of drugs, enhancement of images in MRI, ferrofluids, and magnetic computer data storage * Includes end-of-chapter exercises and five appendices Physics of Magnetic Nanostructures is written for senior undergraduate and graduate students in physics and nanotechnology, material scientists, chemists, and physicists.

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Produktdetails

• Verlag: John Wiley & Sons
• Seitenzahl: 192
• Erscheinungstermin: 11. Juni 2015
• Englisch
• ISBN-13: 9781118989906
• Artikelnr.: 43126484

Autorenporträt

Frank J. Owens, PhD., is a research professor in the Department of Physics at Hunter College and member of the graduate faculty at City University of New York. From 1990 until 2008, Dr. Owens was a senior research physicist for the US Army Armament Research Engineering and Development Center (ARDEC). Dr. Owens is the author of more than six books and more than 180 journal publications. He is a Fellow of the American Physical Society.

Inhaltsangabe

Preface ix Acknowledgment xi 1 Properties of Nanostructures 1 1.1 Cohesive
Energy 1 1.2 Electronic Properties 7 1.3 Quantum Dots 10 1.4 Vibrational
Properties 12 1.5 Summary 17 References 17 2 The Physics of Magnetism 19
2.1 Kinds of Magnetism 19 2.2 Paramagnetism 20 2.2.1 Theory of
Paramagnetism 20 2.2.2 Methods of Measuring Susceptibility 22 2.3
Ferromagnetism 25 2.3.1 Theory of Ferromagnetism 25 2.3.2 Magnetic
Resonance 29 2.4 Antiferromagnetism 32 References 34 3 Properties of
Magnetic Nanoparticles 35 3.1 Superparamagnetism 35 3.2 Effect of Particle
Size on Magnetization 35 3.3 Dynamical Behavior of Magnetic Nanoparticles
37 3.4 Magnetic Field?]Aligned Particles in Frozen Fluids 41 3.5 Magnetism
Induced by Nanosizing 47 3.6 Antiferromagnetic Nanoparticles 48 3.7
Magnetoresistive Materials 50 References 53 4 Bulk Nanostructured Magnetic
Materials 55 4.1 Ferromagnetic Solids With Nanosized Grains 55 4.2
Low?]Dimensional Magnetic Nanostructures 57 4.2.1 Magnetic Quantum Wells 57
4.2.2 Magnetic Quantum Wires 61 4.2.3 Building One?]Dimensional Magnetic
Arrays One Atom at a Time 65 4.3 Magnetoresistance in Bulk Nanostructured
Materials 67 References 74 5 Magnetism in Carbon and Boron Nitride
Nanostructures 75 5.1 Carbon Nanostructures 75 5.1.1 Fullerene, C60 75
5.1.2 Carbon and Boron Nitride Nanotubes 78 5.1.3 Graphene 81 5.2
Experimental Observations of Magnetism in Carbon and Boron Nitride
Nanostructures 81 5.2.1 Magnetism in C60 81 5.2.2 Ferromagnetism in Carbon
and Boron Nitride Nanotubes 87 5.2.3 Magnetism in Graphene 88 References 93
6 Nanostructured Magnetic Semiconductors 95 6.1 Electron-Hole Junctions 95
6.2 MOSFET 98 6.3 N anosized MOSFETs 99 6.4 Dilute Magnetic Semiconductors
100 6.5 N anostructuring in Magnetic Semiconductors 103 6.6 Dms Quantum
Wells 106 6.7 DMS Quantum Dots 106 6.8 Storage Devices Based on Magnetic
Semiconductors 107 6.9 Theoretical Predictions of Nanostructured Magnetic
Semiconductors 108 References 111 7 Applications of Magnetic Nanostructures
113 7.1 Ferrofluids 113 7.2 Magnetic Storage (Hard Drives) 118 7.3 Electric
Field Control of Magnetism 121 7.4 Magnetic Photonic Crystals 123 7.5
Magnetic Nanoparticles as Catalysts 125 7.6 Magnetic Nanoparticle Labeling
of Hazardous Materials 127 References 129 8 Medical Applications of
Magnetic Nanostructures 131 8.1 Targeted Drug Delivery 131 8.2 Magnetic
Hyperthermia 132 8.3 Magnetic Separation 134 8.4 Magnetic Nanoparticles For
Enhanced Contrast in Magnetic Resonance Imaging 135 8.5 Detection of
Bacteria 139 8.6 Analysis of Stored Blood 144 References 146 9 Fabrication
of Magnetic Nanostructures 147 9.1 Magnetic Nanoparticles 147 9.2 Magnetic
Quantum Wells 149 9.3 Magnetic Nanowires 152 9.4 Magnetic Quantum Dots 153
References 154 APPENDIX A A Table of Number of Atoms Versus Size in Face
Centered Cubic Nanoparticles 155 APPENDIX B Definition of a Magnetic Field
157 APPENDIX C Density Functional Theory 159 APPENDIX D Tight Binding Model
of Electronic Structure of Metals 163 APPENDIX E Periodic Boundary
Conditions 165 Index 167