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  • TITLE
  • DEDICATION
  • CERTIFICATE 1
  • CERTIFICATE-2
  • DECLARATION
  • ACKNOWLEDGEMENT
  • CONTENTS
  • PREFACE
  • 1 A BRIEF REVIEW OF THE SEMICONDUCTING COMPOUNDS AND INTRODUCTION TO THE THEORY OF ELASTICITY AND THERMAL EXPANSION
  • 1.1 Introduction
  • 1.2 Zinc Sulphide (ZnS)
  • 1.3 Zinc Selenide (ZnSe)
  • 1.4 Zinc Telluride (ZnTe)
  • 1.5 Gallium Arsenide (GaAs)
  • 1.6 Finite Strain Theory of Elasticity
  • 1.7 Quasi-harmonic Theory of Thermal Expansion
  • References
  • 2 INTERLATTICE DISPLACEMENTS OF ZnS, ZnSe, ZnTe and GaAs
  • 2.I Introduction
  • 2 2 Theory
  • 2.3 Interlattice Displacements of Zinc Sulphide (ZnS)
  • 2.4 Results and Discussion
  • 2.5 lnterlattice displacements of Zinc Selenide (ZnSe)
  • 2.6 Results and Discussion
  • 2.7 Interlattice Displacements of Zinc Telluride (ZnTe)
  • 2.8 Results and Discussion
  • 2.9 Interlattice Displacements of Gallium Arsenide (GaAs)
  • 2.10 Results and Discussion
  • References
  • 3 SECOND-ORDER ELASTIC CONSTANTS OF ZnS, ZnSe, ZnTe And GaAs
  • 3.1 Introduction
  • 3.2 Theory
  • 3.3 Second-order Elastic Constants of Zinc Sulphide (ZnS)
  • 3.4 Second order Elastic Constants of Zinc Selenide ZnSe)
  • 3.5 Second-order Elastic Constants of Zinc Telluride (ZnTe)
  • 3.6 Second--order Elastic Constants of Gallium Arsenate (GaAs)
  • 3.7 Results and Discussion
  • References
  • 4 THIRD-ORDER ELASTIC CONSTANTS OF ZnS, ZnSe, ZnTe AND GaAs
  • 4.1 Introduction
  • 4.2 Theory
  • 4.3 Third-order Elastic Constants of Zinc Sulphide (ZnS)
  • 4.4 Third-order Elastic Constants of Zinc Solenoid (ZnSe)
  • 4.5 Third-order Elastic Constants of Zinc Telluride (ZnTe)
  • 4.6 Third-order Elastic Constants of Gallium Arsenate (GaAs)
  • 4.7 Results and Discussion
  • References
  • 5 PRESSURE DERIVATIVES OF THE SECOND-ORDER ELASTIC CONSTANTS OF ZnS, ZnSe, ZnTe and GaAs
  • 5.1 Introduction
  • 5.2 Theory
  • 5.3 Pressure Derivatives of Zinc Sulphate (ZnS)
  • 5.4 Pressure Derivatives of Zinc Solenoid (ZnSe)
  • 5.5 Pressure Derivatives of Zinc Telluride (ZnTe)
  • 5.6 Pressure Derivatives of Gallium Arsenate (GaAs)
  • 5.7 Results and Discussion
  • References
  • 6 LOW TEMPERATURE THERMAL EXPANSION OF Ins, ZnSe, ZnTe AND GaAs
  • 6.1 Introduction
  • 6.2 Procedure to Obtain the Low Temperature Limit of Lattice Thermal Expansion
  • 6.3 Low temperature Limit of the Lattice Thermal Expansion of Zinc Sulphide (ZnS)
  • 6.4 Low Temperature Limit of the Lattice Thermal Expansion Of Zinc Solenoid (ZnSe)
  • 6.5 I ow Temperature Limit of the Lattice Thermal Expansion of Zinc Telluride (ZnTe)
  • 6.6 Low Temperature Limit of the Lattice Thermal Expansion of Gallium Arsenate (GaAs)
  • 6.7 Results and Discussion
  • References
  • 7 SUMMARY AND CONCLUSION
  • APPENDICES
  • APPENDIX I Position Co-ordinates of the Various Nearest Neighbours of the Different Atoms in the Unit Cell of ZnS
  • APPENDIX II Position Co-ordinates of the Various Nearest Neighbours of the Different Atoms in the Unit Cell of ZnSe
  • APPENDIX III Position Co-ordinates of the Various Nearest Neighbours of the Different Atoms in the Unit Cell of ZnTe
  • APPENDIX IV Position Co-ordinates of the Various Nearest Neighbours of the Different Atoms in the Unit Cell of GaAs