Magnetic Resonance of Phase Transitions

Magnetic Resonance of Phase Transitions

1st Edition - January 1, 1979

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  • Editors: Frank J. Owens, Charles P. Poole, Horacio A. Farach
  • eBook ISBN: 9781483219059

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Magnetic Resonance of Phase Transitions shows how the effects of phase transitions are manifested in the magnetic resonance data. The book discusses the basic concepts of structural phase and magnetic resonance; various types of magnetic resonances and their underlying principles; and the radiofrequency methods of nuclear magnetic resonance. The text also describes quadrupole methods; the microwave technique of electron spin resonance; and the Mössbauer effect. Phase transitions in various systems such as fluids, liquid crystals, and crystals, including paramagnets and ferroelectrics, are also considered. Physicists and scientists working in energetic materials laboratories will find the book invaluable.

Table of Contents

  • Contents

    List of Contributors


    1. Basic Concepts of Structural Phase Transitions

    I. Introduction

    II. Macroscopic Theory

    III. Microscopic Theories

    IV. Experimental Approaches


    2. Basic Concepts of Magnetic Resonance

    I. Introduction

    II. Fundamentals

    III. Nuclear Magnetic Resonance

    IV. Nuclear Quadrupole Resonance

    V. Electron Spin Resonance

    VI. Mössbauer Resonance

    VII. Relaxation Measurements


    3. NMR and NQR in Fluids, Paramagnets,and Crystals

    I. Introduction

    II. Static and Time-Dependent Critical Phenomena

    III. The NMR and NQR Approach

    IV. NMR near the Critical Point in Fluids

    V. NMR in the Paramagnetic Phase and Near the Ordering Temperature

    VI. NMR and NQR near Structural Phase Transitions


    4. NMR of Liquid Crystals

    I. Introduction

    II. Motional Averaging

    III. Orientational Order

    IV. Spin-Lattice Relaxation in Thermotropic Liquid Crystals

    Appendix A Spherical Harmonics and Their Transformations


    5. Magnetic Resonance Studies of Proton Dynamics in KDP Type Ferroelectrics

    I. Introduction

    II. The Pseudo-Spin Model and the Soft Mode Dynamics

    III. The Polarization Fluctuation Spectrum and the Central Peak

    IV. Condensing Modes

    V. Order Parameter and Shape of the O—H---O Hydrogen Bond Potential

    VI. Short-Range Correlations of Proton Motion

    VII. Fluctuations at Cationic Sites

    VIII. Soft Mode Dynamics

    IX. Central Peak Phenomena

    X. Conclusions


    6. EPR of Transition Ions as a Probe of Structural Changes

    I. Introduction

    II. Transition Ions

    III. Nature of Structural Phase Transitions

    IV. Effect of Phase Transitions on EPR Data

    V. Ferroelectrics

    VI. Nonpolar Phase Transitions

    VII. Magnetic Phase Transitions

    VIII. Summary


    7. Mössbauer Studies

    I. Introduction

    II. Basics of Mössbauer Spectroscopy

    III. Magnetic Phase Transitions

    IV. Structual Phase Transitions

    V. Metal-Nonmetal Transitions

    VI. High-Spin-Low-Spin Transitions

    VII. Other Phase Transitions

    VIII. Conclusions



Product details

  • No. of pages: 400
  • Language: English
  • Copyright: © Academic Press 1979
  • Published: January 1, 1979
  • Imprint: Academic Press
  • eBook ISBN: 9781483219059

About the Editors

Frank J. Owens

Charles P. Poole

Horacio A. Farach

Affiliations and Expertise

University of South Carolina, Department of Physics and Astronomy, Columbia, USA

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