Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

# High-temperature ceramic oxide superconductors

Rao, CNR (1988) High-temperature ceramic oxide superconductors. In: Sadhana, 13 (1-2). pp. 19-35.

 PDF high1.pdf Download (680Kb)

## Abstract

High-temperature superconductivity in oxides of the type $La_{2-x}Ba_x(Sr_x)CuO_4$, $YBa_2Cu_30_{7-\delta}$, $La_{3-x}Ba_{3+x}Cu_60_{14}$ and Bi (Tl)- Ca-Sr(Ba)-Cu-0 systems is discussed, with special emphasis on the experimental findings from the author's laboratory. The importance of holes on oxygen and of the $Cu^{1+} (d^{10})$ state is examined. A transition is shown to occur from chain- to sheet-superconductivity in $YBa_2CU_3O_{7-\delta}$ accompanying a change in oxygen stoichiometry. Some of the important material parameters and technological applications are briefly presented. There is every hope that materials with $T_c$ close to room temperature will be discovered in the near future. All the high $T_c$ oxides found hitherto have perovskite-related structures with two-dimensional Cu-0 sheets.

Item Type: Journal Article Copyright of this article belongs to Indian Academy of Sciences. High-temperature superconductivity;ceramic oxide superconductors;bismuth cuprates;thallium cuprates;LnBa2Cu307;rare earth cuprates Division of Chemical Sciences > Solid State & Structural Chemistry Unit 07 Mar 2008 19 Sep 2010 04:43 http://eprints.iisc.ernet.in/id/eprint/13194

### Actions (login required)

 View Item