Superconducting glass-ceramic rods in BiCaSrCu2Ox prepared by crystallization under a temperature gradient

Abe, Yoshihiro; Hosono, Hideo; Hosoe, Masahiro; Iwase, Jiro; Kubo, Yukio
October 1988
Applied Physics Letters;10/3/1988, Vol. 53 Issue 14, p1341
Academic Journal
Superconducting BiCaSrCu2Ox glass rods and coils were successfully prepared by pumping up the melt at 1150 °C into SiO2 or Pyrex glass tubes. After the outer glass tubes were removed, the resultant glass rods up to 30 cm long were crystallized under a temperature gradient of 30 °C/mm without deforming and cracking. The Tc (onset) and Tc (zero) of the resulting glass-ceramic rods were ∼80 and 62 K, respectively.


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