3 edition of AC Loss and Macroscopic Theory of Superconductors found in the catalog.
July 5, 2001 by CRC .
Written in English
|The Physical Object|
|Number of Pages||224|
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The second edition of AC Loss and Macroscopic Theory of Superconductors, like the first edition, is written for both physicists and engineers. It starts with a rigorous and partially new derivation of Maxwell's equations as they apply to superconductors, and the remainder of the book is devoted to loss approximations for a wide range of by: The second edition of AC Loss and Macroscopic Theory of Superconductors, like the first edition, is written for both physicists and engineers.
It starts with a rigorous and partial TABLE OF CONTENTSCited by: Title: AC loss and macroscopic theory of superconductors This book examines the mechanisms of power losses which occur in superconductors as a result of changing magnetic fields. Research supported by the Power Program of the Office of Naval Research is summarized.
The second edition of AC Loss and Macroscopic Theory of Superconductors, like the first edition, is written for both physicists and engineers. It starts with a rigorous and partially new derivation of Maxwell's equations as they apply to superconductors, and the remainder of the book is devoted to loss approximations for a wide range of applications.
AC Loss and Macroscopic Theory of Superconductors - Kindle edition by Jr., W.J. Carr. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading AC Loss and Macroscopic Theory of Superconductors.
Instantaneous Power Loss in a Sheet in the Bean Approximation Consider the approximate set of Maxwel l equations (in SI units, where a dot is used for the time derivative)Author: W.J. Carr. Predicting AC loss in practical superconductors.
F Gömöry 1, J Šouc 1, M Vojenčiak 1, E Seiler 1, B Klinčok 1, J M Ceballos 1,2, E Pardo 1,3, A Sanchez 3, C Navau 3, S Farinon 4 and P Fabbricatore 4. Published 20 January • IOP Publishing Ltd Superconductor Science and Technology, Vol Number 3Cited by: The AC magnetic losses at power frequencies (60 Hz) were investigated for mono-and multifilament Ag-sheathed (Bi, Pb) 2Sr 2Ca 2Cu 3O y (BSCCO) tapes with similar I c values at 77K.
The multifilament sample exhibited higher losses than the monofilament under the same : M. Lelovic, S. Mench, T. Deis, N. Eror, U. Balachandran, V. Selvamanickam, P. Haldar. AC losses in superconductors under sinusoidal conditions Origin of AC Losses in Superconductors The vortices in a type II superconductor create a lattice of parallel flux lines through the specimen, each carrying a quantum of magnetic flux /2 10 15 0 I he 2 Tm (where h is the Planck constant and e is the electron charge).
In the past, high ac losses in superconductors have limited their use to relatively low frequency ac applications. However during the past decade, considerable progress in superconductor fabrication has resulted in filament size reduction from µ m to 1 µ m leading to ac loss reductions of between two and three orders of by: 3.
Introduction to The Theory of Superconductivity (PDF 82P) This note covers the following topics: introduction, superconducting transition, the london model, meissner effect, phase coherence, magnetic flux quantization, coherence length and the energy gap, critical currents and magnetic fields, condensation energy, critical currents, quantized vortices, basic.
Carr W J AC Loss and Macroscopic Theory of Superconductors (London: Taylor and Francis) p  Gurevich A V, Mints R G and Rakhmanov A L Physics of Composite Superconductors (New York: Begell House) p Cited by: 2.
AC loss and macroscopic theory of superconductors By WJ WJ Jr Carr and Jr W J Carr Topics: Other Fields of PhysicsAuthor: WJ WJ Jr Carr and Jr W J Carr. AC losses in high-temperature superconductors: revisiting the fundamentals of the loss modelling.
In superconductors the smeared-out features can be atoms, AC Loss and Macroscopic Theory of Superconductors, Gordon and Breach, New York, Cited by: 6. Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link)Author: W J Carr.
Although many useful expressions have been derived for the AC loss in high-T c superconductors, most lack the rigor which exists in low-T c way to obtain more rigorous results is simply to apply Maxwell theory more carefully, since, in principle, Maxwell theory provides a systematic, exact approach for the AC loss in any by: 5.
AC Loss and Macroscopic Theory of Superconductors by Carr, W. A copy that has been read, but remains in clean condition.
All pages are intact, and the cover is intact. The spine may show signs of wear. Pages can include limited notes and highlighting, and the copy can include previous owner inscriptions.
Macroscopic Description of Type-II Superconductors -- 4. Expression for the Loss Per Cycle -- Pt. Hysteresis in Ordinary Bulk Superconductors -- 5. Instantaneous Power Loss in a Sheet in the Bean Approximation -- 6. The ac loss of a high‐T c superconductor in the flux‐flow state is theoretically examined.
Two applications, a power transmission cable and a winding of an ac coil, are considered. The ac loss of a ‘‘flux‐flow superconducting cable’’ may become smaller than that of a ‘‘critical state cable’’ in ordinary conditions, because Cited by: 5.
Advanced ac loss measurement methods for superconducting tapes are described in detail and demonstrated on BSCCO/Ag (Bi 2 Sr 2 Ca 2 Cu 3 O x with a Ag matrix) tapes in liquid nitrogen at 77 K.
The aim of the measurements is to simulate the situation of a tape conductor in an electric power application like a transformer coil or a power cable. In this class Cited by: Superconductivity in Metals and Alloys. The object of this report is to explain 1) the structure sensitive factors affecting the kinetics of the transition between the normal and superconducting states of selected metals, metal alloys, and intermetallic compounds, and 2)to explore the area of intermetallic compounds and compound alloys for new superconductors.
and were later shown to be a speci c form of the BCS theory. While useful and accurate for macroscopic quan-tities, like the London-London attempt, it did not explain the foundation for superconductivity in these materials.
Foundations of BCS Theory In this section, we lay out the theoretical grounds for BCS Size: KB. A macroscopic theory for bulk superconductors is developed in the framework of the theory for other magnetic materials, where "magnetization" current is.
This book examines the mechanisms of power losses which occur in superconductors as a result of changing magnetic fields. Research supported by the Power Program of the Office of Naval Research is summarized.
Macroscopic field theory is used to investigate the losses in multifilament conductors. The objective of this program was to contribute toward new and improved rotating machines for Naval applications, with emphasis on superconducting machinery. Work has been performed on the theory of ac losses in multifilament superconductors and experiments were made to check the theory.
A list of publications and abstracts of scientific papers published under the contract Author: W J Carr. ideas of the BCS theory and its implications are outlined.
INTRODUCTION In these lectures I want to give an introduction into the physical principles of superconductivity and its fascinating properties. More detailed accounts can be found in the excellent text books by W. Buckel  and by D.R. Tilley and J. Tilley .File Size: KB.
Electrodynamics of High Pinning Superconductors. In book: Superconductivity - Theory and Applications. () AC Loss and Macroscopic Theory of Superconductors. Despite ten years of intensive research, many questions remain unanswered concerning the nature of the electronic structure (Fermi vs non-Fermi liquid) and mechanisms of superconductivity.
Spectroscopy of High-Tc Superconductors, A Theoretical View provides a current, comprehensive review of the exp. By covering theory, design, and fabrication of nanostructured superconducting materials, this monograph is an invaluable resource for research and development.
Examples are energy saving solutions, healthcare, and communication technologies. Key ingredients are nanopatterned materials which help to improve the superconducting critical parameters and performance of.
with a macroscopic coherent matter wave. In this chapter we will also learn about experiments convincingly demonstrating this wave property. First we turn to the feature providing the name “superconductivity”. The Vanishing of the Electrical Resistance The initial observation of the superconductivity of mercury raised a fundamental.
Superconductivity text books: You do not need to buy text-books for your research. If you wish to buy a text book for the group, please send me a purchase order.
When the book arrives simply write “Superconductivity Group” and the date on the inside of the front cover – store it on the group book shelf when you are not using it. 2 1 General Theory of High-T c Superconductors macroscopic wave function is given by the above - mentioned order ψThe.
electrical resistance vanishes in the case of ψ ≠ 0; moreover, a variety of other aspects of superconducting phenomena like the persistent current, the Meissner effect, the Josephson effect, and so on, appear.
We know now that superconductivity is a macroscopic quantum effect. Even though many elements of the new quantum theory were developed by Planck, Bohr, Sommerfeld, Einstein and others starting init is clear in hindsight that it was hopeless to explain superconductivityCited by: "Superconductivity," by J.
Ketterson and S. Song, (Cambridge University Press, Cambridge, ). The book is in three parts: the first deals with phenomenological aspects of superconductivity, the second with the microscopic theory of uniform superconductors, and the third with the microscopic theory of nonuniform Size: KB.
The Josephson effect is the phenomenon of supercurrent, a current that flows indefinitely long without any voltage applied, across a device known as a Josephson junction (JJ), which consists of two or more superconductors coupled by a weak link.
The weak link can consist of a thin insulating barrier (known as a superconductor–insulator–superconductor junction, or S-I-S). A microscopic theory of superconductivity was developed in by John Bardeen, Leon Cooper and J. Robert Schrieffer, which is known as the BCS theory.
The central feature of the BCS theory is that two electrons in the superconductor are able to form a bound pair called a Cooper pair if they somehowFile Size: KB.
Macroscopic quantum phenomena refer to processes showing quantum behavior at the macroscopic scale, rather than at the atomic scale where quantum effects are prevalent. The best-known examples of macroscopic quantum phenomena are superfluidity and superconductivity; other examples include the quantum Hall effect, giant magnetoresistance.
A Classiﬁcation of Superconductors Some main properties (including superconducting ones) of diﬀerent chemical elements are shown in color inset. Here, a classiﬁcation of known supercon-ducting compounds is carried out.
One includes 13 types of compounds, namely organic superconductors, A compounds, magnetic superconduc-File Size: 1MB. Concepts in High Temperature Superconductivity E. Carlson, V. Emery, S. Kivelson, D. Orgad It is the purpose of this paper to explore the theory of high temperature superconductivity.
Much of the motivation for this comes from the study of the cuprate high temperature superconductors. However, our primary focus is on the. Superconductivity is the set of physical properties observed in certain materials, wherein electrical resistance vanishes and from which magnetic flux fields are expelled.
Any material exhibiting these properties is a an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered even down to near absolute zero, a superconductor.
Superconductivity was discovered by Kamerlingh Onnes inin a metal solid. Ever since, researchers have attempted to observe superconductivity at increasing temperatures with the goal of finding a room-temperature superconductor. By the late s, superconductivity was observed in several metallic compounds (in particular Nb-based, such as NbTi, Nb 3 Sn, and .Assuming you have basic undergrad knowledge of E&M, statistical mechanics, and quantum mechanics, I would suggest starting off by reading the superconductivity chapter in a standard solid state physics textbook such as Introduction to Solid State.Deceleration of magnetic dipoles interacting with YBa2Cu3O(x) superconductors: Authors: the dipole is decelerated as a result of the energy dissipation in the superconductor.
This energy loss is evaluated on the basis of a macroscopic theory that incorporates both the hysteresis and flux-flow losses. The results are in reasonably good.