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  • TITLE
  • DECLARATION
  • CERTIFICATE
  • CERTIFICATE-1
  • CERTIFICATE
  • CERTIFICATE-2
  • ACKNOWLEDGEMENT
  • PREFACE
  • LIST OF PUBLICATIONS
  • PATENTS
  • CONTENTS
  • 1. GENERAL INTRODUCTION
  • 1.1 Ceramic Materials
  • 1. GENERAL INTRODUCTION
  • 1.2 Perovskites
  • 1.3 High Temperature Superconductivity
  • 1.4 High Temperature Superconducting Films
  • 1.5 Substrates for High Temperature Superconducting Films
  • 1.6 Nanostructured Materials
  • 1.7 Origin of the Present Work
  • REFERENCES
  • Further References
  • 2. PREPARATION AND CHARACTERIZATION TECHNIQUES
  • 2.1 Introduction
  • 2.2 Preparation of Ceramic Materials
  • Fig. 2.1 Procedure for preparation of advanced ceramic materials by solid state reaction.
  • Fig 2.2 Procedure for preparation of advanced ceramic materials by the modified combustion method
  • 2.3 Preparation of Thick Films
  • 2.4 Characterization Techniques
  • Fig. 2.3 Schematic diagram of a Powder X-ray Diffractometer
  • Fig. 2.4 Schematic diagram of a Differential Thermal Analyser (DTA)
  • Fig. 2.5 Schematic diagram of a Thermogravimetric Analyzer
  • Fig. 2.6 Schematic diagram of a FT-IR Spectrometer
  • Fig. 2.7 Schematic diagram of a Gas Adsorption Apparatus based on the BET model
  • Fig. 2.8 Diagram sketch of an SEM
  • Fig. 2.9 Block diagram of Transmission Electron Microscope
  • Fig.2.12 Schematic diagram of resistivity measurement setup
  • REFERENCES
  • Further References
  • 3. SYNTHESIS AND CHARACTERIZATION OF Ba2REHfO5, 5* (RE = La, Pr, Nd and Eu): A NEW GROUP OF PEROVSKITES FOR THEIR USE AS SUBSTRATES FOR HIGH Tc SUPERCONDUCTORS
  • 3.1 Introduction
  • 3.2 Synthesis of Ba2REHfO5.5
  • 3.3 Structural Characterization of Ba2REHfO5.5
  • 3.4 Density Measurements of Ba2REHfO5.5
  • 3.5 Thermal Studies of Ba2REHfO5.5
  • 3.6 Melting Studies of Ba2REHf05.5
  • 3.7 Atmospheric Stability of Ba2REHfO5.5
  • 3.8 Dielectric Measurements of Ba2REHfO5.5
  • 3.9 Conclusions
  • REFERENCES
  • 4. PREPARATION AND CHARACTERIZATION OF YBCO THICK FILMS ON POLYCRYSTALLINE Ba2REHfO5.5* (RE = La, Pr, Nd and Eu) SUBSTRATES
  • 4.1 Introduction
  • 4.2 Synthesis of YBa2Cu3O7-6 Superconductor
  • 4.3 The Lattice Matching between the Ba2REHfO5.5 and YBCO
  • 4.4 Chemical Reactivity between Ba2REHfO5.5 a and YBCO
  • 4.5 Superconducting Properties of the Ba2REHfO5.5sYBCO Composites
  • 4.6 Preparation of YBCO Thick Films on Ba2REHf05.5
  • 4.6 Preparation of YBCO Thick Films on Ba2REHfO5.5
  • 4.7 Conclusions
  • REFERENCES
  • 5. SUPERCONDUCTING Bi-2223 THICK FILMS (Tc (0) = 110 K) ON Ba2REHfO5.5 (RE = La and Pr) SUBSTRATES
  • 5.1 Introduction
  • 5.2 Synthesis of Bi-2223 Superconductor
  • 5.3 Chemical Compatibility between Ba2REHfO5.5 and Bi-2223
  • 5.4 Development of Bi-2223 Thick Films on Ba2REHfO5.5
  • 5.5 Conclusions
  • REFERENCES
  • 6. SYNTHESIS AND CHARACTERIZATION OF Ba2REHfO5.5 (RE = La, Pr, Nd and Eu) PEROVSKITE CERAMICS AS NANOPARTICLES BY A MODIFIED COMBUSTION PROCESS
  • 6.1 Introduction
  • 6.2 Synthesis of Advanced Ceramics as Nanoparticles
  • 6.3 The Modified Combustion Process*
  • 6.4 Synthesis of Ba2REHfO5.5Nanoparticles*
  • 6.5 Characterisation of the Ba2REHfO5.5 Powders
  • 6.6 Sintering of the Ba2REHfO5.5 Nanopowders
  • 6.7 Conclusions
  • REFERENCES
  • 7. RAPID DENSIFICATION OF BARIUM PRASEODYMIUM HAFNIUM OXIDE NANOPARTICLES*
  • 7.1 Introduction
  • 7.2 Rapid Densification of Ba2REHfO5.5 Nanopowders
  • 7.3 Microstructural Characterization
  • 7.4 Conclusions
  • REFERENCES
  • 8. SUMMARY AND CONCLUSION
  • 8.1 Future Objectives