Abstract
The Bi 2Sr 2CaCu 2O 8+ x (2 2 1 2) compound is a very promising material to study the phenomenon of high- T c superconductivity. Since a major requirement for reliable measurement of physical properties of this material is the availability of high quality and large size single crystals, four different methods, viz. slow cooling (SC), Bridgman, top seeded solution growth (TSSG) and travelling solvent floating zone (TSFZ), were employed for growing these crystals. However, only the TSFZ technique is a crucible-free method and, therefore, allows the production of contamination-free Bi-2212 crystals. We report results of systematic X-ray investigations of the Bi 2Sr 2CaCu 2O 8+ x (2212) single crystals grown by SC, TSSG and TSFZ methods. The typical concentrations of dislocations in the Bi-2212 crystals are estimated from the width of peaks. According to the obtained X-ray topography and diffractometry data, these crystals demonstrate misorientation anisotropy around different crystallographic axes, which is a consequence of incommensurate modulation in this compound. The surface quality has been studied by atomic force microscopy.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
