ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The composition of the superconducting phase Bi4(Sr3±x Ca3∓x )Σ=6Cu4O16, has been determined by means of a sysmetic investigation of the relationship between composition and superconductivity, and phase analysis. The superconducting phase belongs to tetragonal system witha=0.3825 nm,c=3.082 nm, space group (S.G.) 14/mmm. The effect of strontium and calcium contents in the Bi(Sr1±x Ca1∓x )Σ=2Cu2O5.5, system and substitution in the Bi1−x A x SrCaCu2O5 (A=V, Gd, Y) and BiSrCa1−x Pb x Cu2O5.05 systems on superconductivity, have been investigated. In the Bi-Sr-Ca-Cu-O system, there are two superconducting phases corresponding to transition temperatures of 110 and 80 K, respectively. The difference between the two superconducting phases may be due to the stacking difference of atoms along thec direction in the structure and their oxygen content.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01105697
Permalink
