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Recovery of 90 K superconductivity in transition‐metal‐doped Y‐Ba‐Cu‐O

 

作者: G. W. Kammlott,   T. H. Tiefel,   S. Jin,  

 

期刊: Applied Physics Letters  (AIP Available online 1990)
卷期: Volume 56, issue 24  

页码: 2459-2461

 

ISSN:0003-6951

 

年代: 1990

 

DOI:10.1063/1.103255

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Most of the transition metal elements incorporated into the lattice of YBa2Cu3O7−&dgr;are known to severely suppress the superconducting transition temperature. In this work, we show that an essentially complete recovery of the 90 K superconductivity can be achieved by partial melt processing of the material doped with Zr, Ta, Ti, Pt, Rh, and Re, which is attributed to second phase particles draining the dopant elements away from the matrix. Such a full recovery ofTcis not obtained in the case of Nb, V, Ni, Fe, Co, Pd, and Ru. The results are of technological interest in view of the need for nonpoisonous, high melting point substrate, clad or core materials desirable for melt processing of Y‐Ba‐Cu‐O.

 

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