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Superconducting materials high-temperature cuprates

A major scientific breakthrough in the area of material science involving copper occurred in late 1986 and early 1987 the discovery of the so-called high-temperature cuprate superconductors (see Superconductivity). These copper-oxide containing materials hold the record for the highest transition temperature (Tc, the temperature at which all resistance to electricity is lost), currently 133 K, which is sigiuficant... [Pg.941]

Although several other types of exotic superconductors (e.g., organic superconductors, heavy-fermion f-electron superconductors, magnetically ordered superconductors, multinary rare-earth, actinide, and transition-metal superconductors) have been investigated intensely since 1986, the cuprate superconductors have received by far the most attention because the highest values of the superconducting critical temperature are found in this class of materials. Rare-earth and actinide elements are key constituents of many of the high-temperature cuprate superconductors and have played a prominent role in the development of the first and some of the more important cuprate superconductors. [Pg.2]

In view of the importance of high-temperature superconductivity in the layered cuprates and the role played by the rare earths, it seemed appropriate to prepare these volumes of the Handbook on the Physics and Chemistry of Rare Earths on High-Temperature Superconductivity in Layered Cuprates . We believe that researchers already working in this field, as well as those intending to enter this field, will find valuable information in the review articles contained in these volumes. Since many of the cuprate superconductors do not contain rare-earth or actinide elements, yet have characteristics and properties similar to those that do, the range of materials considered in these volumes has been broadened to a limited extent to include all high-temperature cuprate superconductors, irrespective of whether they contain rare-earth or actinide elements. [Pg.3]

Although the high-temperature superconducting phases are formed from insulating materials by the introduction of defects, the precise relationship between dopant, structure, and properties is not fully understood yet. For example, in most of the cuprate phases it is extremely difficult to be exactly sure of the charges on the individual ions, and because of this the real defect structures are still uncertain. [Pg.373]

The first edition of this book published in 1986 was well received by the chemistry and materials science communities and this resulted in the paperback edition published in 1989. We are most gratified by this warm reception to the book which has been found useful by students and teachers as well as practising solid state chemists and materials scientists. Since we first wrote the book, there have been many new developments in the various aspects of solid state chemistry covering synthesis, structure elucidation, properties, phenomena and reactivity. The discovery of high-temperature superconductivity in the cuprates created a great sensation and gave a boost to the study of solid state chemistry. Many new types of materials such as the fullerenes and carbon nanotubes have been discovered. We have now revised the book taking into account the new developments so that it reflects the present status of the subject adequately and points to new directions. [Pg.562]

More than 15 years studies of high temperature superconductivity in cuprates accumulated many evidences of the d-wave type symmetry of the superconducting order parameter (OP) in these materials. The most strong ones has been found from the ARPES experiments [1], quantum interference... [Pg.181]

Use of the combustion method in an atmosphere of air or oxygen to prepare complex metal oxides seems obvious. In the last three to four years, a variety of oxides have been prepared using nitrate mixtures with a fuel such as glycine or urea. It seems that almost any ternary or quaternary oxide can be prepared by this method. All the superconducting cuprates have been prepared by this method, although the resulting products in fine particulate form have to be heated to an appropriate high temperature in a desired atmosphere to obtain the final cuprate [18], Table 2 lists typical materials prepared by the combustion method. [Pg.20]

The biggest explosion in materials chemistry and physics occurred in late 1986 when high-temperature superconductivity was discovered in a lanthanum cuprate, a material which was a ceramic and on which a few chemists had worked earlier. As stated in a report of the US National Academy of Sciences, this discovery changed the role of chemistry in the study of materials, and materials chemistry became a more significant part of materials science. It is around this time that even chemists started to consider solid state chemistry as an integral and important part of main-stream chemistry. [Pg.622]

The discovery of high-temperature superconductivity in a lanthanum-based cuprate perovskite material with a transition temperature of Tc = 35 K by Bednorz and Muller... [Pg.1001]


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See also in sourсe #XX -- [ Pg.371 , Pg.373 , Pg.375 , Pg.376 , Pg.377 , Pg.378 , Pg.379 ]




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