Superconductivity and microstructure in the Bi1.7(Pb0.3)HgxSr2Ca2Cu3Oδ (0⩽x⩽0.4) system

✍ Scribed by Chien-Hua Shan; Subhash H. Risbud

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 647 KB
• Volume: 222
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)90558-4

✦ Synopsis

The superconducting properties and microstructure evolution of rig doped Bi based compounds with the nominal composition of Bi1.7 (Pbo.3) HgxSr2Ca2Cu3Oa ( 0 ~ X ~ 0.4 ) were investigated as a function of the doping level and sintering temperature. The transition to the superconductive state was observed at 94 K in the Hg doped samples sintered for 4 h and the addition of Hg increased the onset transition temperature to ~ 118 K. Aligned grain structures and improved inter-grain linkage were observed in all the microstructures by scanning electron microscopy (SEM). The density of the Hg doped samples also increased with increasing the Hg content.