Superconductivity, Structure and Oxygen Content of Fe-Doped Ba2YCu3Oy
- 1 April 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (4A) , L603
- https://doi.org/10.1143/jjap.27.l603
Abstract
The crystal structure and superconductivity of Ba2Y(Cu1-x Fe x )3O y have been studied along with its compositional analysis, especially that of oxygen. This system shows an orthorhombic-to-tetragonal phase transformation and has been extensively investigated by several groups. In the present study we observed that with an increasing Fe concentration x, the superconducting transition temperature T c decreases slowly correlating with the difference of the lattice constants, b-a, in the orthorhombic phase region and decreases rapidly from x>0.04∼0.05 in the tetragonal phase region, while y is almost constant.Keywords
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