Title :
Development ofa synthesis technique and characterization of Bi2Sr2CaCu2O8+δ whiskers
Author :
Hatano, T. ; Takano, Y. ; Fukuyo, A. ; Arisawa, S. ; Ishii, A. ; Togano, K.
Author_Institution :
Nat. Res. Inst. for Metals, Tsukuba, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
A synthesis technique of Bi2Sr2CaCu2 O8+δ single-crystal whiskers has been studied. The whiskers were synthesized by annealing melt-quenched glassy Bi-Sr-Ca-Cu-O (3:2:2:4 in cationic ratio) plates, which were rapidly quenched from 1100-1200°C. The growth condition and mechanism of the Bi2Sr2CaCu2O8+δ whiskers were investigated by an in-situ high-temperature x-ray diffraction analysis and an in-situ high-temperature microscope observation. It was found that the whiskers grow in a partially melted state at a temperature of 10-40 degrees below the melting point. The result obtained demonstrates that Bi2Sr2CaCu2 O8+δ whiskers grow at their bottom by the conventional liquid-phase growth mechanism, as was proposed by Matsubara et al
Keywords :
annealing; bismuth compounds; calcium compounds; crystal growth from melt; high-temperature superconductors; strontium compounds; whiskers (crystal); 1100 to 1200 C; Bi2Sr2CaCu2O8+δ whiskers; Bi2Sr2CaCu2O8; characterization; growth condition; high temperature superconductor; partially melted state; synthesis technique; x-ray diffraction analysis; Bismuth; Crystallization; Heating; High temperature superconductors; Josephson junctions; Optical microscopy; Strontium; Superconducting microwave devices; X-ray diffraction; X-ray scattering;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
