(Pb,Ti)Sr2(Ca,Y)Cu2Oz, a new superconductor in the Pb-1212 family

초록

(Pb<inf>0.5</inf>Ti<inf>0.5</inf>)Sr<inf>2</inf>(Ca<inf>1-x</inf>Y <inf>x</inf>)Cu<inf>2</inf>O<inf>z</inf>, a new superconductor in the Pb-1212 family, has been synthesized in an oxidizing atmosphere. It is observed that the superconducting transition temperature (T<inf>c</inf>) depends on the yttrium content in (Ca,Y) sites and post-heat-treatments. Bulk superconductivity with a T<inf>c</inf> value of 60 K is observed in the present system. © 1999 IOP Publishing Ltd.