Deformation effects on the structure and properties of Y1-xCaxBa2Cu3O7-delta (x=0;0.3) tapes produced by OPIT method in the Ag-tube

作者：Ignatov H; Nazarova E; Zahariev A; Lazarova V; Georgiev J^*; Stoyanova Ivanova A; Terzieva S; Kliavkov K; Kovachev V

来源：Journal of Superconductivity and Novel Magnetism, 2008, 21(1): 69-73.

DOI：10.1007/s10948-007-0301-0

• Ag-sheathed tape
• overdoped 123 core
• deformation

Samples of superconducting tapes with two type cores (YBa2Cu3O7-y and Y0.7Ca0.3Ba2Cu3O7-delta ), obtained by the OPIT method under two different regime of rolling-cold (20 degrees C) and hot (825 degrees C) are investigated. The superconducting core materials were prepared by standard solid-state technology and fill in the high purity (4N) Ag-tubes. The effect of cold and hot rolling deformation on the orientation of supercoducting crystals were studied by XRD analysis. It was found that a higher degree of texturing in the out of plane direction is obtained after hot rolling deformation in tapes with overdoped core. As a result, the highest critical current density (J(c) ) at 77 K and zero magnetic field was achieved in them.

• 出版日期2008-1
• 单位北京化工大学