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Particulate and granular magnetism : nanoparticles and thin films / K. O'Grady, G. Vallejo Fernández, A. Hirohata.

Oxford Scholarship Online: Physics Available online

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Format:
Book
Author/Creator:
O'Grady, Kevin, author.
Fernandez, G. Vallejo, author.
Hirohata, Atsufumi, author.
Series:
Oxford graduate texts.
Oxford scholarship online.
Oxford graduate texts
Oxford scholarship online
Language:
English
Subjects (All):
Magnetic materials.
Physical Description:
1 online resource (0 pages)
Place of Publication:
Oxford : Oxford University Press, 2023.
Summary:
Aimed primarily at experimental chemists, physicists, electronic engineers and material scientists interested in particulate and granular magnetic materials, this textbook covers the basic physics of magnetism as well as providing a detailed description of ferrofluids and their technological applications.
Contents:
Cover
Title
Copyright page
Preface
Acknowledgements
Contents
Part I Basic Concepts
Concepts, Terminology and Units
Magnetic Poles, Moments and Fields
Flux Density and Induction
Other Key Concepts
The Demagnetising Field
Susceptibility and Permeability
Units and Conversion Factors
Magnetic Domains
Magnetocrystalline and Shape Anisotropy
Magnetocrystalline Anisotropy
Shape Anisotropy
Principles of Domains
Direct Exchange Interactions
Domain Walls
Domain Wall Width
Domain Wall Motion
Magnetisation Processes
Single Domain Particles
Incoherent Reversal
Exchange Coupling in Granular Films
Ferrimagnetic Nanoparticles
Thermal Activation Effects
Single Particle Activation
Superparamagnetism and Blocking
Particle and Grain Size Analysis
Coercivity and Remanance
Time and Frequency Effect
Time Dependence Effects
Frequency Effects
Switching Field Distributions
The Fluctuation Field and Activation Volume
Intergranular Interactions
Dipole-Dipole Effects
RKKY Exchange Interactions
Susceptibility Effects
Minor Loop Phenomena
Exchange Bias
Discovery and Origin of Exchange Bias
Early Models of Exchange Bias
Numerical Models of Exchange Bias
The York Model of Exchange Bias
Granular Effects
Setting Criterion for the AF
Control of the Anisotropy of the AF
Role of Impurities and Element Size
Interfacial Effects
Interfacial Doping
Magneto-Resistance
Anisotropic Magneto-Resistance (AMR)
The Band Theory of Ferromagnetism
Giant Magneto-Resistance (GMR)
Tunnelling Magneto-Resistance (TMR)
Spin Transfer Torque (STT)
Part II Applications of Magnetic Nanoparticles and Granular Thin Films
Ferrofluids
Definition and Preparation
Unusual Phenomena in Ferrofluids
Surface Instability.
Labyrinthine Instability
Non-magnetic Alignment
Properties of Ferrofluids
Ideal Superparamagnetism
Magnetic Size Distribution
The Schliomis Diameter
Pseudo Curie-Weiss Behaviour
Applications of Ferrofluids
Vacuum Seals
Loudspeakers
Sink-float Separation
Inclinometers
Magnetic Hyperthermia
A Dosimetric Strategy for Magnetic Hyperthermia
Bio-Medical Applications
Separation and Localisation
MRI Contrast Enhancement
Magnetic Imaging
Magnetic Polymer Microspheres
Magneto-Rheological Fluids
Magnetic Recording
Tape Recording
Analogue Recording
Digital Recording
Longitudinal Disk Recording
Transition to Perpendicular Recording
Disk Structure
Development of Perpendicular Media
Current Disk Structure
The Read-Write Head
Heat Assisted Magnetic Recording
Limits to Conventional Recording
Heat Assisted Magnetic Recording (HAMR) Disk Structure
HAMR Recording Head
The Future of Disk Recording
Magnetic Random Access Memory (MRAM)
Principles and Early Designs
Initial Implementation
First Generation Toggle-MRAM
Second Generation STT-MRAM
Third Generation MRAM with Perpendicular Orientation
Other Devices Based on MRAM
Spin-Torque Oscillator
Neuromorphic Computation
Spin-Orbit Torque MRAM
Voltage Controlled Magnetic Anisotropy
Thermally Assisted MRAM
Technology Comparison
Outlook for Future Developments
Future Developments in Information Storage Technology
Magnetic Fluid Systems
Appendix A Demagnetising Factors for a Prolate and Oblate Spheroids
References
Index.
Notes:
Also issued in print: 2023.
Includes bibliographical references and index.
Description based on online resource and publisher information; title from PDF title page (viewed on December 8, 2023).
ISBN:
0-19-197598-2
0-19-287312-1
OCLC:
1411300660

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