Pressure-Induced Phase Transitions in AB2X4 Chalcogenide Compounds

  • Francisco Javier Manjon
  • Ion Tiginyanu
  • Veaceslav Ursaki
Part of the Springer Series in Materials Science book series (SSMATERIALS, volume 189)

Table of contents

  1. Front Matter
    Pages i-xiii
  2. Spinel-Structured AB2X4 Chalcogenide Compounds

    1. Front Matter
      Pages 51-51
    2. Daniel Errandonea
      Pages 53-73
    3. P. Rodríguez-Hernández, A. Muñoz
      Pages 103-129
  3. Ordered-Vacancy AB2X4 Chalcogenide Compounds

    1. Front Matter
      Pages 131-131
    2. Francisco Javier Manjón, Rosario Isabel Vilaplana
      Pages 133-161
    3. Óscar Gomis, Francisco Javier Manjón
      Pages 163-184
  4. AB2X4 Chalcogenide Compounds with Other Types of Structures

    1. Front Matter
      Pages 211-211
    2. Francisco Javier Manjón, Ion Tiginyanu, Veaceslav Ursaki
      Pages 237-238
  5. Back Matter
    Pages 239-243

About this book

Introduction

This book on pressure-induced phase transitions in AB2X4 chalcogenide compounds deals with one important AmBnXp material. The interest in these materials is caused by their properties. The results are discussed for three main groups of structural families: cubic-spinel structures, defective tetragonal structures, and other structures like layered and wurtzite-type modifications. A systematic analysis of the behavior of cubic (spinel), tetragonal (defect chalcopyrites and stannites) and other crystal modifications of AB2X4 compounds under hydrostatic pressure is performed. The behavior of AIIAl2S4, AIIGa2S4, AIIAl2Se4 and AIIGa2Se4 compounds with defective tetragonal structures, compounds with layered and wurtzite structures under hydrostatic pressure and the pressure dependence of the band gap, lattice parameters, interatomic distances, vibrational modes and pressure-induced phase transitions is discussed. Many of these compounds,  except oxide spinels, undergo a pressure-induced phase transition towards the rocksalt-type structure. The phase transition is preceded by disorder in the cation sublattice. The dependence of the transition pressure to the rocksalt-type structure as a function of the compound ionicity and the size criterion is analyzed.  At high pressures, all ordered-vacancy compounds are found to exhibit a band anticrossing between several conduction bands that leads to a strong decrease of its pressure coefficient and consequently to a strong non-linear pressure dependence of the direct bandgap energy. Theoretical studies of phase transitions in several ordered-vacancy compounds reveal that the existence of ordered vacancies alter the cation-anion bond distances and their compressibilities. The book is written for students, Ph D. students and specialists in materials science, phase transitions and new materials.

Keywords

Cation-Anion Bond Distances Defect Chalcopyrites Defective Tetragonal Structures Ordered-Vacancy Compounds Phase Transitions Rocksalt-Type Structure Spinel Compounds Stannite Compounds

Editors and affiliations

  • Francisco Javier Manjon
    • 1
  • Ion Tiginyanu
    • 2
  • Veaceslav Ursaki
    • 3
  1. 1.Instituto de Diseño paraPolytechnic University of ValenciaValenciaSpain
  2. 2.Academy of Sciences of MoldovaChisinauMoldova
  3. 3.Institute of Applied PhysicsChisinauMoldova

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-642-40367-5
  • Copyright Information Springer-Verlag Berlin Heidelberg 2014
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Chemistry and Materials Science
  • Print ISBN 978-3-642-40366-8
  • Online ISBN 978-3-642-40367-5
  • Series Print ISSN 0933-033X
  • Series Online ISSN 2196-2812
  • About this book