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Growth of R-123 Phase Single Crystal Whiskers

Masanori Nagao·Mitsunori Sato·Yukitake Tachiki·Kinya Miyagawa·Masaki Tanaka·Hiroshi Maeda·Kyung Sung Yun·Yoshihiko Takano·Takeshi Hatano
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Abstract

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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Masanori Nagao, Mitsunori Sato, Yukitake Tachiki, Kinya Miyagawa, Masaki Tanaka, Hiroshi Maeda, Kyung Sung Yun, Yoshihiko Takano, Takeshi Hatano. 2004-02-17. Growth of R-123 Phase Single Crystal Whiskers. https://doi.org/10.1143/jjap.43.l324

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