Luiz A.M. (ed.) Superconductor
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Superconductor
edited by
Adir Moysés Luiz
SC I YO
Superconductor
Edited by Adir Moysés Luiz
Published by Sciyo
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Copyright © 2010 Sciyo
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Superconductor, Edited by Adir Moysés Luiz
p. cm.
ISBN 978-953-307-107-7
SC I YO.C O M
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Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Preface IX
A Model to Study Microscopic Mechanisms
in High-Tc Superconductors 1
Adir Moysés Luiz
The Discovery of Type II Superconductors (Shubnikov Phase) 17
A.G. Shepelev
Microstructure, Diffusion and Growth Mechanism
of Nb
3
Sn Ssuperconductor by Bronze Technique 47
Aloke Paul, Tomi Laurila and Vesa Vuorinen
Superconductor Properties for Silicon Nanostructures 69
Nikolay T. Bagraev, Leonid E. Klyachkin, Andrey A. Koudryavtsev,
Anna M. Malyarenko and Vladimir V. Romanov
MgB
2
-MgO Compound Superconductor 93
Yi Bing Zhang and Shi Ping Zhou
Superconducting Properties
of Carbonaceous Chemical Doped MgB
2
111
Wenxian Li and Shi-Xue Dou
Studies on the Gamma Radiation Responses
of High Tc Superconductors 135
Carlos M. Cruz Inclán, Ibrahin Piñera Hernández,
Antonio Leyva Fabelo and Yamiel Abreu Alfonso
Charged Particle Irradiation Studies on Bismuth Based High
Temperature Superconductors & MgB
2
; A Comparative Survey 161
S.K.Bandyopadhyay
Application of Optical Techniques in the Characterization
of Thermal Stability and Environmental Degradation
in High Temperature Superconductors 179
L. A. Angurel, N. Andrés, M. P. Arroyo, S. Recuero,
E. Martínez, J. Pelegrín, F. Lera and J.M. Andrés
Contents
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Nanoscale Pinning in the LRE-123 System
- the Way to Applications up to Liquid Oxygen Temperature
and High Magnetic Fields 203
Muralidhar Miryala, Milos Jirsa and Masaru Tomita
X-ray Micro-Tomography as a New and Powerful Tool
for Characterization of MgB
2
Superconductor 229
Gheorghe Aldica, Ion Tiseanu, Petre Badica,
Teddy Craciunescu and Mattew Rindfl eisch
Synthesis and Thermophysical Characterization
of Bismuth based High-T
c
Superconductors 249
M. Anis-ur-Rehman and Asghari Maqsood
Development of Large Scale YBa
2
Cu
3
O
7-x
Superconductor with Plastic Forming 263
Makoto Takahashi, Sadao Ohkido and Kouichi Wakita
Some Chaotic Points in Cuprate Superconductors 273
Özden Aslan Çataltepe
Superconductors and Quantum Gravity 291
Ülker Onbaşlı and Zeynep Güven Özdemir
Phase Dynamics of Superconducting Junctions
under Microwave Excitation in Phase Diffusive Regime 311
Saxon Liou and Watson Kuo
Determination of the Local Crystal-Chemical Features
of Complex Chalcogenides by Copper,
Antimony, and Arsenic NQR 327
R.R. Gainov, A.V. Dooglav, I.N. Pen’kov, A.Yu. Orlova, I.A. Evlampiev,
N.N. Mozgova, and R.R. Khasanov
VI
Superconductivity was discovered in 1911 by Kamerlingh Onnes. The history of
superconductivity is full of theoretical challenges and practical developments. In 1986 the
discovery of Bednorz and Müller of an oxide superconductor with critical temperature (Tc)
approximately equal to 35 K has given a novel impetus to this fascinating subject. Since
this discovery, there has been a great number of laboratories all over the world involved in
researches of superconductors with high Tc values, the so-called “high-Tc superconductors”.
The discovery of a room temperature superconductor has been a long-standing dream of
many scientists. The technological and practical applications of such a discovery should
be tremendous. However, the actual use of superconducting devices is limited by the fact
that they must be cooled to low temperatures to become superconducting. Currently, the
highest Tc value is approximately equal to 135 K at 1 atm. The knowledge of the microscopic
mechanisms of high-Tc superconductors should be a theoretical guide in the researches
to synthesize a room temperature superconductor. However, up to the present time, the
microscopic mechanisms of high-Tc superconductivity are unclear.
This book is a collection of works intended to study theoretical and experimental aspects
of superconductivity. Here you will fi nd interesting reports on low-Tc superconductors
(materials with Tc < 30 K), as well as a great number of researches on high-Tc superconductors
(materials with Tc > 30 K).
In Chapter 1 a model to study microscopic mechanisms in high-Tc superconductivity is
discussed.
In Chapters 2 and 3 there are reports on low-Tc superconductors.
In Chapters 4-14 theoretical developments and experimental researches on high-Tc
superconductors are described.
In Chapters 15-17 interesting works about theoretical aspects and other characteristic features
of the phenomenon of superconductivity are presented.
I expect that this book will be useful to encourage further experimental and theoretical
researches in superconducting materials.
Editor
Adir Moysés Luiz,
Instituto de Física, Universidade Federal do Rio de Janeiro,
Brazil
Preface