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First Order Phase Transitions of Magnetic Materials: Broad and Interrupted Transitions de Praveen Chaddah

First Order Phase Transitions of Magnetic Materials: Broad and Interrupted Transitions

Autor Praveen Chaddah
en Limba Engleză Hardback – 27 noi 2017
This book introduces new concepts in the phenomenon of 1st order phase transitions. It discusses the concept of kinetic arrest at a certain temperature, with this temperature being dependent on the second control variable (magnetic field, or pressure). It discusses interesting manifestations of this phenomenon when the 1st order transition is broadened, i.e. occurs over a finite range of temperatures. Many examples of this phenomenon, observed recently in many materials, will also be discussed.
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Specificații

ISBN-13: 9781498786256
ISBN-10: 1498786251
Pagini: 174
Ilustrații: 53 Line drawings, black and white; 3 Tables, black and white
Dimensiuni: 156 x 234 x 14 mm
Greutate: 0.41 kg
Ediția:1
Editura: CRC Press
Colecția CRC Press

Cuprins

  1. Phase transitions and rigorous definitions
    1. Phase transitions in Nature, and a meandering introduction
    2. Introduction: back to basics
    3. The Ehrenfest classification 1.3.1 First order transitions
    4. Studying phase transitions with two control variables
    5. Van der Waals gas as an exactly solvable model: isotherms and isobars
    6. Metastable states across a phase transition: limitations of the Ehrenfest classification.
    References
  2. Modern classification of phase transitions
    1. First order transitions, and the rest
    2. Metastable states are specific to first order transitions
    3. Limits of metastability
    4. Hysteresis across first order phase transitions
    5. Metastable to stable transformations
    6. First order phase transitions with two control variables
    References
  3. Defining characteristics of first order transitions.
    1. Necessary and sufficient characteristics following the Ehrenfest classification 3.1.1 Melting of the vortex lattice
    2. Need for other characteristic tests beyond the Clausius-Clapeyron relation
    3. Necessary and sufficient characteristics following the modern classification
      1. Hysteresis as an indicator
      2. Hysteresis together with metastable to stable transformation
    References
  4. Metastable and ‘arrested unstable’ states across first order transitions
    1. Conceptual difference between metastable and unstable states
    2. Relaxation rates for metastable, and for arrested unstable, states
    3. Manifestations of kinetic arrest in studies using two control variables
      1. Temperature variations in various fields
      2. The CHUF protocol
      3. CHUF for supercooled states
      4. Isothermal variations of field
    References
  5. Disorder-broadened transitions
    1. Broadened supercooling and superheating bands
    2. Kinetic arrest and interrupted transitions: tuning by cooling field
    3. Kinetic arrest and interrupted transitions: isothermal variation of field
    4. The CHUF protocol
    5. Measuring Tk(H) using CHUF
    6. What causes kinetic arrest?
References
Subject Index

Descriere

This book discusses the concept of kinetic arrest at a certain temperature, with this temperature being dependent on the second control variable (magnetic field, or pressure). It discusses interesting manifestations of this phenomenon when the 1st order transition is broadened, i.e. occurs over a finite range of temperatures.