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Title: Solubility and superconductivity in RE(Ba sub 2-x RE sub x )Cu sub 3 O sub 7+. delta. (RE = Nd, Sm, Eu, Gd, Dy)

Technical Report ·
DOI:https://doi.org/10.2172/5397699· OSTI ID:5397699

Solid solutions of RE(Ba{sub 2-x}RE{sub x})Cu{sub 3}O{sub 7- {delta}}(RE=Nd,Sm,Eu,Gd,Dy) for x=0 to x=0.5 have been investigated. X-ray and resistivity measurements show that there exists a solid solution region, through which, the structure changes from orthorhombic to tetragonal and the superconducting properties are depressed. The solubility limits depend strongly on the size of the rare-earth ion, with the smallest (Dy) showing no appreciable solubility. The superconducting transition temperature versus x for all of the rare-earth ion substitutions falls on a universal curve, indicating that the Ba sites are extremely ionic and magnetically isolated. 20 refs., 4 figs.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
DOE/ER
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5397699
Report Number(s):
ANL/PPRNT-89-186; ON: DE90002998; TRN: 89-030088
Country of Publication:
United States
Language:
English