Magnetic properties of solids / Kenneth B. Tamayo, editor.

Format:

Book

Contributor:

Tamayo, Kenneth B.

Series:

Materials science and technologies series.

Materials science and technologies series

Language:

English

Subjects (All):

Solids--Magnetic properties.

Solids.

Physical Description:

1 online resource (356 p.)

Edition:

1st ed.

Place of Publication:

New York : Nova Science Publishers, c2009.

Language Note:

English

Summary:

Magnetism is one of the phenomena by which materials exert attractive or repulsive forces on other materials. This book presents a broad range of topics in this growing field, including their use as magnetic agents, receptor particles for microwaves, and more.

Contents:

Intro

MAGNETIC PROPERTIESOF SOLIDS

CONTENTS

PREFACE

NON-EQUILIBRIUM MAGNETISMOF SINGLE-DOMAIN PARTICLESFOR CHARACTERIZATIONOF MAGNETIC NANOMATERIALS

Abstract

1. Introduction

1.1. Real Magnetic Nanoparticles

1.2. Basic Properties of Idealized Stoner-Wohlfarth Particles

1.3. Néel's Relaxation Approach

2. The Stoner-Wohlfarth Model Extended within Néel'sRelaxation

2.1. The Extended SW Model: Hysteresis in a Periodic External MagneticField

2.2. Temperature Demagnetization Curves for Different Cooling Regimes

2.3. High-Temperature Magnetization Limit in the Extended SW Model

3. Multilevel Model for Stochastic Relaxationof Particle's Uniform Magnetization

3.1. Constant-Energy Magnetization Trajectories as Stochastic States

3.2. Non-Langevin High-Temperature Magnetizationin the Slow Diffusion Limit

3.3. Equilibrium Magnetization within an Effective Inclusion of Diffusion

4. Relaxation Mössbauer Spectra of Magnetic Nanoparticles

4.1. Mössbauer Spectra of Nanoparticles and Hyperfine Field Distribution

4.2. Two-Level Relaxation Model

4.3. Generalized Two-Level Relaxation Model

4.4. Mössbauer Spectra within Precession of the Hyperfine Field

4.5. Mössbauer Spectra of Nanoparticles within Continuous Diffusion andPrecession of Uniform Magnetization

4.6. Mössbauer Spectra of Nanoparticles in a Weak Magnetic Field

5. Mössbauer Spectra under Radiofrequency Magnetic FieldExcitation

5.1. Mössbauer Spectra under Rf Field Excitation within the Stoner-Wohlfarth Model

5.2. Relaxation Mössbauer Spectra under Rf Field Excitation

5.3. Mössbauer Spectra under Rf Field Excitation within the Extended SWModel

5.4. Relaxation-Stimulated Resonances in Mössbauer Spectra under Rf FieldExcitation

6. Conclusion

Acknowledgments

References.

MAGNETIC AND ELECTRONIC STRUCTUREMODIFICATIONS INDUCED BY SURFACESEGREGATION IN LA0.65PB0.35MNO3 THIN FILMS

2. Thin Film Deposition

3. Bulk Properties of the Thin Films

4. Surface Composition

5. Surface Debye Temperature

6. Surface Electronic Structure

7. Summary

References

SITE DISORDER AND FINITE SIZE EFFECTSIN RARE-EARTH MANGANITES

I. Introduction

1.1. Outline of Manganites

1.2. Disorder Effect

1.3. Finite Size Effect

II. A-Site Disorder Effects

2.1. Early Studies on the A-Site Disorder

2.2. Large Bandwidth Manganites

2.3. Intermediate Bandwidth Manganites

2.4. Small Bandwidth Manganites

III. B-Site Disorder Effects

3.1. Introduction

3.2. Theoretical Model

3.3. Results and Discussion

IV. Finite Size Effects in Nanostructure Manganites

4.1. Experimental Results

4.2. Theoretical Approach

V. Conclusion

Acknowledgements

Refernences

PROCESSING AND PROPERTIESOF THIN MANGANITE FILMS

Introduction

1. Processing of Thin Manganite Films

2. Morphology and Crystalline Quality of La0.7Ca0.3MnO3 ThinFilms

2.1. Studies of the Growth Parameters

2.2. Microstructure of La0.7Ca0.3MnO3 Epitaxial Thin Films

2.3. Oxygen Vacancies in Manganite Thin Films

3. Fe DOPED La0.7Ca0.3Mn1-xFexO3 (x=0.2) Thin Films

3.1. Structural, Composition and Electronic Characterizationof La0.7Ca0.3Mn0.8Fe0.2O3 Films

3.2. Electronic Properties of the Fe (20%) Doped La0.7Ca0.3Mn1-xFexO3 ThinFilms

Conclusion

STUDY OF THE MAGNETIC PROPERTIES OF THESEMICONDUCTORS AND THE NANOMATERIALSBY DIFFERENT THEORETICAL METHODS

II. Theoretical Methods

II.1. Mean Field Theory

II.2. Probability Law.

II.3. High Temperature Series Expansions (Quantum Method)

II.4. High-Temperature Series Expansions (Classical Method)

III. Applications for Different SemiconductorsMagnetic Materials

III. 1. Semiconductors Spinels Material

III.1.A. Mean Field Theory and Probability Law

III.1.B. High Temperature Series Expansions

III.1.C. Replica Method

III. 2. Diluted Magnetic Semiconductors (DMS)

III.3. Illuminates and Perovskites Materials

III.4. Magnetic Properties and Finite Size Scaling in Nanomaterials

IV. Discussions and Conclusions

Annex 1

I. Calculation of the Coefficients a (n)

II. Calculation of the Coefficients e (k) and d (k), for k = 1,2

Annex 2

FAST DOMAIN WALL DYNAMICSIN THIN MAGNETIC WIRES (REVIEW)

Theory of Domain Wall Propagation

Amorphous Glass-Coated Microwires

Single Domain Wall Propagation in AmorphousGlass- Coated Microwires

Fast Domain Wall Propagation in Amorphous Glass CoatedMicrowires

Acknowledgment

SUBSTITUTION- INDUCED STRUCTURAL,FERROELECTRIC AND MAGNETIC PHASETRANSITIONS IN BI1-XGDXFEO3 MULTIFERROICS

2. Experimental

3. Results and Discussion

3.1. Crystal Structure

3.2. Local Ferroelectric Properties

3.3. Magnetic Properties

4. Conclusion

PINNING EFFECT ON LOCAL MAGNETIZATIONIN FERRIMAGNETS A2FEMOO6 (A = BA, CA)EXAMINED BY TRANSMISSION ELECTRONMICROSCOPY (TEM)

Scope of this Paper

3. Magnetic Domain Structure in Ba2FeMoO6

4.Temperature Dependence of Maze-Shaped Magnetic Domains

5. Antisite Defects in Ba2FeMoO6

6. Relationship between Magnetic Structure and Antisite Defects

7. Microstructure and Magnetic Domain Structure in Ca2FeMoO6

8. Summary

Acknowledgments.

Appendix

A. Argon Ion Beam Thinning Method

B. Focused Ion Beam Fabrication Method

C. Selected-Area Electron Diffraction (SAED) Patterns

D. Dark-Field Imaging

E. High-Resolution Electron Microscopy

F. Lorentz Transmission Electron Microscopy

G. Magnetic Transport-of-Intensity Equation Method

OBTAINING MAGNETIC AND ELECTRICINFORMATION ON ORGANIC SYSTEMS USINGELECTRON SPIN RESONANCE

Identifying Correlated Magnetic Moments

ESR Lineshapes in Conducting Systems

Conclusions

ORBITAL DILUTION EFFECT IN MOTTINSULATING SYSTEM

2. Impurity Effect in eg Orbital System

3. Impurity Effect in Spin-Orbital Coupled System

4. Impurity Effect in Quantum Orbital System

5. Conclusion

INDEX.

Notes:

Description based upon print version of record.

Includes bibliographical references and index.

Description based on print version record.

ISBN:

1-61728-534-X

OCLC:

837527736