Critical State In Superconductors - Proceedings Of 1994 Topical International Cryogenic Materials Conference

Critical State In Superconductors - Proceedings Of 1994 Topical International Cryogenic Materials Conference PDF Author: Teruo Matsushita
Publisher: World Scientific
ISBN: 9814549304
Category :
Languages : en
Pages : 410

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Book Description
These proceedings include 76 papers on vortex structure and dynamics, flux pinning, flux creep and melting, critical state phenomena, weak links as well as technical problems for fabrication of materials with high critical current density, for both high-temperature and low-temperature superconductors.

Critical State In Superconductors - Proceedings Of 1994 Topical International Cryogenic Materials Conference

Critical State In Superconductors - Proceedings Of 1994 Topical International Cryogenic Materials Conference PDF Author: Teruo Matsushita
Publisher: World Scientific
ISBN: 9814549304
Category :
Languages : en
Pages : 410

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Book Description
These proceedings include 76 papers on vortex structure and dynamics, flux pinning, flux creep and melting, critical state phenomena, weak links as well as technical problems for fabrication of materials with high critical current density, for both high-temperature and low-temperature superconductors.

Superconductivity

Superconductivity PDF Author: Charles P. Poole
Publisher: Academic Press
ISBN: 1483219348
Category : Science
Languages : en
Pages : 637

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Book Description
Superconductivity covers the nature of the phenomenon of superconductivity. The book discusses the fundamental principles of superconductivity; the essential features of the superconducting state-the phenomena of zero resistance and perfect diamagnetism; and the properties of the various classes of superconductors, including the organics, the buckministerfullerenes, and the precursors to the cuprates. The text also describes superconductivity from the viewpoint of thermodynamics and provides expressions for the free energy; the Ginzburg-Landau and BCS theories; and the structures of the high temperature superconductors. The band theory; type II superconductivity and magnetic properties; and the intermediate and mixed states are also considered. The book further tackles critical state models; various types of tunneling and the Josephson effect; and other transport properties. The text concludes by looking into spectroscopic properties. Physicists and astronomers will find the book invaluable.

Flux Pinning in Superconductors

Flux Pinning in Superconductors PDF Author: Teruo Matsushita
Publisher: Springer Science & Business Media
ISBN: 3642453120
Category : Technology & Engineering
Languages : en
Pages : 483

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Book Description
The book covers the flux pinning mechanisms and properties and the electromagnetic phenomena caused by the flux pinning common for metallic, high-Tc and MgB2 superconductors. The condensation energy interaction known for normal precipitates or grain boundaries and the kinetic energy interaction proposed for artificial Nb pins in Nb-Ti, etc. are introduced for the pinning mechanism. Summation theories to derive the critical current density are discussed in detail. Irreversible magnetization and AC loss caused by the flux pinning are also discussed. The loss originally stems from the ohmic dissipation of normal electrons in the normal core driven by the electric field induced by the flux motion. The readers will learn why the resultant loss is of hysteresis type in spite of such mechanism. The influence of the flux pinning on the vortex phase diagram in high Tc superconductors is discussed and the dependencies of the irreversibility field are also described on other quantities such as anisotropy of superconductor, specimen size and electric field strength. Recent developments of critical current properties in various high-Tc superconductors and MgB2 are introduced. Other topics are: singularity in the case of transport current in a parallel magnetic field such as deviation from the Josephson relation, reversible flux motion inside pinning potentials which causes deviation from the critical state model prediction, the concept of the minimization of energy dissipation in the flux pinning phenomena which gives the basis for the critical state model, etc. Significant reduction in the AC loss in AC wires with very fine filaments originates from the reversible flux motion which is dominant in the two-dimensional pinning. The concept of minimum energy dissipation explains also the behavior of flux bundle size which determines the irreversibility line under the flux creep. The new edition has been thoroughly updated, with new sections on the progress in enhancing the critical current density in high temperature superconductors by introduction of artificial pinning centers, the effect of packing density on the critical current density and irreversibility field in MgB2 and derivation of the force-balance equation from the minimization of the free energy including the pinning energy.

University Physics

University Physics PDF Author: OpenStax
Publisher:
ISBN: 9781680920451
Category : Science
Languages : en
Pages : 622

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Book Description
University Physics is a three-volume collection that meets the scope and sequence requirements for two- and three-semester calculus-based physics courses. Volume 1 covers mechanics, sound, oscillations, and waves. Volume 2 covers thermodynamics, electricity and magnetism, and Volume 3 covers optics and modern physics. This textbook emphasizes connections between between theory and application, making physics concepts interesting and accessible to students while maintaining the mathematical rigor inherent in the subject. Frequent, strong examples focus on how to approach a problem, how to work with the equations, and how to check and generalize the result. The text and images in this textbook are grayscale.

Nonlinear Differential Equations of Monotone Types in Banach Spaces

Nonlinear Differential Equations of Monotone Types in Banach Spaces PDF Author: Viorel Barbu
Publisher: Springer Science & Business Media
ISBN: 1441955429
Category : Mathematics
Languages : en
Pages : 283

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Book Description
This monograph is concerned with the basic results on Cauchy problems associated with nonlinear monotone operators in Banach spaces with applications to partial differential equations of evolutive type. It focuses on major results in recent decades.

30 Years of the Landau Institute

30 Years of the Landau Institute PDF Author: Isaak Markovich Khalatnikov
Publisher: World Scientific
ISBN: 9789810222536
Category : Science
Languages : en
Pages : 802

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Book Description
The Landau Institute for Theoretical Physics was created in 1965 by a group of LD Landau's pupils. Very soon, it was widely recognized as one of the world's leading centers in theoretical physics. According to Science Magazine, the Institute in the eighties had the highest citation index among all the scientific organizations in the former Soviet Union. This collection of the best papers of the Institute reflects the development of the many directions in the exact sciences during the last 30 years. The reader can find the original formulations of well-known notions in condensed matter theory, quantum field theory, mathematical physics and astrophysics, which were introduced by members of the Landau Institute.The following are some of the achievements described in this book: monopoles (A Polyakov), instantons (A Belavin et al.), weak crystallization (S Brazovskii), spin superfluidity (I Fomin), finite band potentials (S Novikov) and paraconductivity (A Larkin, L Aslamasov).

Critical States in Type-II Thin Film Superconductors

Critical States in Type-II Thin Film Superconductors PDF Author: Jun Zhu
Publisher:
ISBN:
Category :
Languages : en
Pages : 316

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Book Description


Critical Currents in Superconductors

Critical Currents in Superconductors PDF Author: A. M. Campbell
Publisher:
ISBN:
Category : Superconductivity
Languages : en
Pages : 266

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Book Description


Magneto-Optical Imaging

Magneto-Optical Imaging PDF Author: Tom H. Johansen
Publisher: Springer Science & Business Media
ISBN: 9781402019982
Category : Science
Languages : en
Pages : 374

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Book Description
Magneto-Optical Imaging has developed rapidly over the last decade to emerge as a leading technique to directly visualise the static and dynamic magnetic behaviour of materials, capable of following magnetic processes on the scale of centimeters to sub-microns and at timescales from hours to nanoseconds. The images are direct, real-time, and give space-resolved information, such as ultrafast magnetic processes and revealing the motion of individual vortices in superconductors. The book is a fully up-to-date report of the present status of the technique.

Critical Currents In Superconductors - Proceedings Of The 7th International Workshop

Critical Currents In Superconductors - Proceedings Of The 7th International Workshop PDF Author: H W Weber
Publisher: World Scientific
ISBN: 981455068X
Category :
Languages : en
Pages : 716

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Book Description
Applications of superconductivity at the boiling temperature of liquid nitrogen continue to challenge physicists, materials scientists and engineers all over the world eight years after the discovery of high temperature superconductivity. The key to a solution of today's problems lies in the optimization of the defect structure in well-oriented oxide materials as well as in a fundamental understanding of the magnetic microstructures in the mixed state and how they are affected by the crystallographic nature ('dimensionality') of these materials. Fifteen invited overview lectures as well as approximately 150 contributed papers highlight the state of the art in this important field of superconductivity and review our current knowledge of critical currents in superconductors.