Superconductivity Research Developments

SUPERCONDUCTIVITY RESEARCH DEVELOPMENTS......Page 3 NOTICE TO THE READER......Page 6 CONTENTS......Page 7 PREFACE......Page 9 ACKNOWLEDGEMENTS......Page 15 1. Background......Page 17 2. Composition and Microstructure......Page 18 3. Influence of Boron Precursor Powders......Page 22 4. Influence of Nominal Magnesium Non-stoichiometry......Page 27 5. Chemical Modification: Second Phase Additions......Page 36 Acknowledgements......Page 38 References......Page 39 Abstract......Page 43 I. Introduction......Page 44 II. The Mutual-Inductance Technique......Page 46 III. Numerical Simulations......Page 50 IV. Influence of Non-uniform Critical Current Density Profile on Magnetic Field Behavior of AC Susceptibility......Page 52 V. On the Origin of Dynamic Reentrance and the Role of the Stewart-McCumber Parameter......Page 56 VI. Manifestation of Novel Geometric Effects in Temperature Behavior of AC Magnetic Response......Page 69 References......Page 75 1. Intermetalic Diborides......Page 79 Structure......Page 81 2. Synthesis History of AgB2 and AuB2......Page 82 3. Mechanical Behaviour, Electronic and Bonding Properties and Critical Temperature......Page 89 4. Future Direction of Research......Page 104 References......Page 105 Introduction......Page 109 1. Crystal Structure Parameters Determining Tc (Review)......Page 112 2. Comparison of Crystal Structure Parameters for Isostructural Materials of 1212 Type......Page 117 3. Crystal Structure Feature for HTSC Cuprates in Temperature Range 100-300 K......Page 122 Summary......Page 135 References......Page 136 1. Introduction......Page 141 2. Experimental......Page 144 3. Results and Discussion......Page 145 4. Conclusion......Page 162 References......Page 163 1. Introduction......Page 165 3. What Should a Theoretical Model Do?......Page 166 4. Pairing Mechanisms......Page 167 6. Conclusion......Page 178 References......Page 179 5. The Explanations for the Universality Law in HTSC......Page 175 Abstract......Page 183 2. Simple Mesa Structure......Page 184 3. U-Shaped Mesa Structure......Page 185 4. Double-Sided Zigzag Structure......Page 190 5. Conclusion......Page 199 References......Page 200 1. Introduction......Page 203 2. Experimental......Page 205 3. Results and Discussion......Page 207 References......Page 235 I. Introduction......Page 239 II. Why the New Approaches Are Necessary – Two Important Notes......Page 240 III. Comparison of HTS with LTS......Page 241 The Analytical Model......Page 244 V. Non-uniform Cases and HTS Device at OverloadingConditions......Page 249 VI. Closing Remarks for Quasi-uniform and Non-uniform Cases and 2-G HTS......Page 252 Acknowledgments......Page 253 References......Page 254 INDEX......Page 257