Jpn. J. Appl. Phys. 43 (2004) pp. L324-L327 |Previous Article| |Next Article| |Table of Contents|
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Letter
Growth of R-123 Phase Single Crystal Whiskers
Masanori Nagao1,2,,
Mitsunori Sato2,
Yukitake Tachiki2,
Kinya Miyagawa2,
Masaki Tanaka2,
Hiroshi Maeda3,
Kyung Sung Yun1,
Yoshihiko Takano1 and
Takeshi Hatano1
1National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
2Kitami Institute of Technology, 165 Koen-cho, Kitami 090-8507, Japan
3National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, U.S.A.
(Received November 10, 2003; accepted January 5, 2004; published February 13, 2004)
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.
URL:
http://jjap.jsap.jp/link?JJAP/43/L324/
DOI: 10.1143/JJAP.43.L324
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