Growth of R-123 Phase Single Crystal Whiskers

Details Growth of R-123 Phase Single Crystal Whiskers Growth of R-123 Phase Single Crystal Whiskers

2004-02-17

arxiv.org/abs/cond-mat/0402435v1

Jpn. J. Appl. Phys. Vol. 43, No. 3A, 2004, pp. L324-L327

Physics

Condensed Matter

Superconductivity

R1Ba2Cu3O7-d, whisker, R ionic radius, crystal growth, Ca including R-123 phase, critical temperature, composition. To be publ

Scientific paper

10.1143/JJAP.43.L324

Single-crystal whiskers of R1Ba2Cu3Ox (R-123, R= La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu) phase have been successfully grown by the Te- and Ca-doping method. The whiskers were grown from precursor pellets at just below their partial melting (peritectic) temperatures. The nominal composition of the R-123 whiskers is R1+uBa2+vCawCu3Ox (u+v+w=0, w>0) with R and/or Ba sites being substituted by Ca. However, the amount of Te was less than the analytical limit. The critical temperatures of the R-123 whiskers were around 80 K, and among these whiskers those with larger R ionic radii such as Dy, Gd, Eu and Sm require post-annealing in an oxygen atmosphere.

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