A New High-Temperature Superconductor: Bi2Sr3-x Cax Cu2O8+y

  title={A New High-Temperature Superconductor: Bi2Sr3-x Cax Cu2O8+y},
  author={M. A. Subramanian and Charlie C. Torardi and Joseph C. Calabrese and Jagannatha Gopalakrishnan and K. J. Morrissey and T. R. Askew and Richard B. Flippen and Uma Chowdhry and Arthur W. Sleight},
  pages={1015 - 1017}
A new superconductor that displays onset behavior near 120 K has been identified as Bi2Sr3-xCaxCu2O8+y, with x ranging from about 0.4 to 0.9. Single crystal x-ray diffraction data were used to determine a pseudo-tetragonal structure based on an A-centered orthorhombic subcell with a = 5.399 �, b= 5.414�, and c = 30.904 �. The structure contains copper-oxygen sheets as in La2CuO4 and YBa2Cu3O7, but the copper-oxygen chains present in YBa2Cu3O7 do not occur in Bi2Sr3-xCaxCu2O8+y. The structure is… 

Crystal structure of the high-temperature superconductor TI2Ba2CaCu2O8

High-temperature superconductivity has gained renewed attention following recent reports of the onset of superconductivity above 100 K in oxide systems containing copper, alkaline earths and bismuth1

New oxide superconductors

Superconductivity in Bi-Sr-Ca-Cu-O (invited)

We report on the structure and superconducting properties of a single phase polycrystalline composition given by Bi2.2Sr1.7Ca1.2Cu2O8+δ as well as measurements on single crystals. X‐ray and electron

The parent structure of the layered high-temperature superconductors

Oxide superconductors in the system Tl2Ba2Can–1CunO4+2n (ref. 1) have transition temperatures (Tc) above 100 K, increasing with n. So far, stacking sequences up to n = 3 have been found in small

Observation of Ring-Like Lattice Modulation Domain in Single Crystal Bi2Sr2CaCu2O8+8 Using X-ray Microscopy

The crystal structure of the Bi2Sr2CaCu2O8+ or Bi-2212 was determined two decades ago when its hightemperature superconductivity emerged [1]. The structure contains copper-oxygen sheet and is

Crystal Structure of Tl2Ba2Ca2Cu3O10, a 125 K Superconductor

Electron microscopy in the Tl/Ba/Ca/Cu/O system has revealed intergrowths where n = 5; such regions may well be responsible for the superconducting onset behavior observed in this system at about 140 K.

X-Ray absorption studies of bi-based superconductors

X-Ray absorption (XANES and EXAFS) spectroscopic techniques have been applied to study the local structural environment of host and dopant cations in Bi-based high-Tc superconductors; the materials



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