Superconducting properties of YBa2Cu3O7−δ with partial rare earth substitution

✍ Scribed by S. Jin; T.H. Tiefel; G.W. Kammlott; R.A. Fastnacht; J.E. Graebner

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 541 KB
• Volume: 173
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(91)90795-z

✦ Synopsis

Superconducting properties of the YBa2Cu307_~ compound with partial rare earth substitution (20 atomic pct substitution for yttrium) have been studied. Among the 14 rare earth elements investigated, La, Ce and Pr caused suppression in To, while other elements had no effect. Some of the rare earths (Sm, Gd, Eu), when partially substituted for Y, resulted in a slight improvement in intragrain Jc (flux pinning) as measured magnetically. Although the rare earth elements have widely different ionic radii, all the (RE) Ba2Cu3OT_~ phases have been found to be soluble in YBa2Cu3OT_6 with no detectable segregation observed by SEM and energy dispersive X-ray analysis.