4 edition of Research on high Tc superconducting compounds found in the catalog.
Research on high Tc superconducting compounds
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va
Written in English
|Statement||Frederick W. Oliver [principal investigator].|
|Series||[NASA contractor report] -- NASA-CR-201114., NASA contractor report -- NASA CR-201114.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
The lab currently operates and improves on several home-built scanning systems include a 4 Kelvin (K) magnetic force microscope, and a 4 K, mK He 3, and 12 mK dilution refrigerator that are used for scanning SQUID and Hall probe setups have mechanical and acoustic vibration isolation measures and use piezo positioners for precise sensor control. Twenty-five Years of High-Temperature I present a personal review of the last twenty-five years of research on high-temperature superconductivity. Twenty-five Years Yes, folks, it has been 25 years and a few months since most of us first learned of the existence of the the wrong direction and publishing a wrong book 2, 15 years into the.
Purchase High Tc Superconductors - 1st Edition. Print Book & E-Book. ISBN , Book Edition: 1. Discovery of new high-Tc superconductors requires an understanding of the interplay between structure and superconductivity, keeping in mind that the best superconductors may need extreme conditions or some form of proximity to various sorts of instabilities. The .
Atypical Superconductors and the Future. As if ceramic superconductors were not strange enough, even more mysterious superconducting systems have been discovered. One is based on compounds centered around the "Fullerene".The fullerene name comes from the late designer-author Buckminster Fuller. Book Description. The discovery of high-temperature superconductivity  by Bendnorz and Müller in the La-BA-Cu-O system resulted in very extensive research work about the discovery and synthesis of other high-temperature superconductors, such as Y-BA-Cu-O and Bi-Sr-Ca-Cu-O.
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High Tc Superconductor Materials Select PRESSURE-INDUCED STRUCTURAL AND ELECTRONIC PROPERTIES OF HIGH-Tc SUPERCONDUCTING MATERIALS STUDIED BY NEUTRON SCATTERING.
Select Effects of substitution of copper by iron and cation distribution in the Bi-Ca-Sr-Cu-O superconducting compounds. select a magnetic study of polycrystalline bi2sr+xca–xcu2o8+δ and bi2sr2ca2cu3o10+δ high-tc superconductors* Book chapter Full text access A MAGNETIC STUDY OF POLYCRYSTALLINE Bi 2 Sr + x Ca – x Cu 2 O 8+ δ AND Bi 2 Sr 2 Ca 2 Cu 3 O 10+ δ HIGH- T c SUPERCONDUCTORS.
research using the key resonance radiation ofl51Eu on the high by other researchers on Eu based 1,2,3 high-Tc compounds. Our results also show the Eu to be trivalent with no trace of divalent europium present. Superconducting europium based 1,2,3 compounds were prepared.
The results suggest that the relatively high superconducting transition temperatures (Tc~13 K) that are observed for The transition from normal to superconducting state in high-Tc compounds takes place from metallic to superconducting.
The metallic states, corresponding to doped compounds, have no gaps. High-temperature superconductors (abbreviated high-T c or HTS) are operatively defined as materials that behave as superconductors at temperatures above nearly − °C (− °F).
This is in fact the lowest temperature reachable by liquid nitrogen, one of the simplest coolants in cryogenics. All superconducting materials known at ordinary pressures currently work far below ambient.
The International Winter School on Electronic Properties of High-Temperature Superconductors, held between March, in Kirchberg, (Tyrol) Austria, was the sixth in a series of meetings to be held at this venue. Four of the earlier meetings were dedicated to issues in the field of.
Nowadays, there is already a variety of high-Tc superconducting products available on the market, like single domain, batch processed bulks with diameters up to mm, hundreds of kilometers of the first generation silver-sheathed Bi and Bi wires and tapes, and several kilometers of the second generation Y tapes (‘coated Author: Muralidhar Miryala, Michael Rudolf Koblischka.
Get this from a library. Research on high Tc superconducting compounds: final report, NASA grant NAG [Frederick W Oliver; United States. National Aeronautics and Space Administration.]. This volume presents current studies in high-temperature superconductivity research.
Topics covered include: flux pinning of melt processed YBCO superconductors and their applications, neutron irradiation effects in high Tc single crystals, redox mechanisms in high Tc superconducting cuprates. Physical Acoustics, Volume XX: Ultrasonics of High-Tc and Other Unconventional Superconductors covers the many acoustic studies of the high-Tc superconductors.
This book is composed of 10 chapters that include some unconventional superconducting systems, such as superfluid 3He, heavy Fermion superconductors, and magnetic re-entrant Edition: 1. The papers presented in this volume provide an overview of current research in the area of high-temperature superconductivity.
Topics discussed include superconductivity near 90 K in the Lu-Ba-Cu-O system, Josephson effects in Ba-Y-Cu-O compounds, electronic properties of La(2-x)Sr(x)CuO/sub 4/ high-Tc superconductors, and X-ray absorption.
The superconducting critical temperature Tc of one of the compounds. PbMo S • was reported to be ~ 15 K. This value is sufficiently high that there was g 6 (and still is) reason to expect that other ternary compounds would be found with superconducting transition temperatures rivaling those of the A15 compounds.
of which Nb Ge has the record. been found to have extraordinarily high transition temperatures, denoted T c. This is the temperature below which a substance is superconducting. The properties of these high-T c compounds are different in some respects from those of the types of superconductors known prior towhich will be referred to as classic superconductors.
High temperature superconductors for power cables (C. Dineen et al.). Physical Properties. Electric field effects in high-Tc superconductors (J. Mannhart et al). Preparation of K Bi(Pb)SrCaCuO superconducting thin films by r.f.
magnetron sputtering and their. Iron-based superconductors (FeSC) are iron-containing chemical compounds whose superconducting properties were discovered in Inled by recently discovered iron pnictide compounds (originally known as oxypnictides), they were in the first stages of experimentation and implementation.
(Previously most high-temperature superconductors were cuprates and being based on layers of. This work presents a discussion on the study of high Tc superconductor properties with the electron paramagnetic resonance spectrometer.
A large number of interesting and important results is presented in Chaps. 4 and 5 of Grigorashvily’s book. The experimental results in the two chapters have been published by: 1.
X-ray absorption spectroscopic studies have been systematically carried out for the new high-T c superconducting intercalation compounds, (HgX 2) Bi 2 Sr 2 CaCu 2 O y (X = Br and I), with a hybridized crystal lattice consisting of superconducting layer and insulating the Hg L III-edge EXAFS analysis, it is found for the first time that the intercalated mercuric halide is.
Large-scale superconducting electric devices for power industry depend critically on wires with high critical current densities at temperatures where cryogenic losses are tolerable. This restricts.
compounds may produce an impure superconducting state are, e.g. a broadened superconducting transition width ΔT C, an incomplete or suppressed Meissner fraction, and/or an enhanced oxygen isotope effect (OIE) [5,6,12].
A particularly relevant structural trait common to high-T C superconductors is the presence of at. Subsequent research has produced new compounds with related structures that are superconducting at temperatures as high as K.
The best known of these was discovered by Paul Chu and Maw-Kuen Wu Jr. and is called the “Chu–Wu phase” or the superconductor.Magnesium diboride (MgB 2) was discovered to be a high Tc superconductor in It actually falls somewhere between a low-temperature and high-temperature superconductor.
It appears to work, at least in part, like a low-temperature superconductor: via a phenomenon known as Cooper pairs. (By contrast, scientists don’t yet understand the.Presently known, high transition temperature (≳15 K) superconducting materials have either the β-W (A) or rocksalt (B-l) crystal structure.
Although these compounds retain the desired crystal structure over a wide composition range, optimum T c ’s are obtained only when the Cited by: 9.