The influences of the Sr/Ca and Bi/Pb ratio upon the structural modulation of the Bi-2212 phase

✍ Scribed by Huang-Lung Su; Florin Vasiliu; Peter Majewski; Fritz Aldinger

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 514 KB
• Volume: 256
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(95)00643-5

✦ Synopsis

The crystal structure of Bi-2212 phase was studied by transmission electron microscopy. Two Bi-2212 specimens with different Sr/Ca ratios have the same displacive incommensurate Bi modulation vector q---0.21 b*+ c* but exhibit different superconducting critical temperatures T c. Typical structural disordering (stacking faults, Bi-layer delineation effects, a-b plane misorientation) was found.