Details

Autor(en) / Beteiligte

• KAMINO, Maruo
• TAKAHASHI, Kazuhiko
• YOSHISATO, Yorinobu
• NAKANO, Shoichi

Titel

Preparation of High Tc Superconductors by a Plasma-Arc Melting and Rapid Quenching Method

Ist Teil von

• Journal of the Ceramic Society of Japan, 1991/08/01, Vol.99(1152), pp.699-703

Ort / Verlag

The Ceramic Society of Japan

Erscheinungsjahr

1991

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• High Tc superconductors have been prepared using a plasma-arc melting and rapid quenching (PMQ) method. Homogeneous and dense superconductors were obtained by this method through the crystallization of a superconducting phase from an amorphous-like state. Particularly in YbBa2Cu3Ox, a relative density of 7.14g/cm3 (98% of the theoretical density 7.27g/cm3) and a large activation energy, 1.5eV, which was related to the flux pinning, were realized by this method. Furthermore, the formation of insulating Yb2BaCuO5 films on the PMQ processed YbBa2Cu3Ox substrate was attempted by rf magnetron sputtering. No deterioration of the YbBa2Cu3Ox substrate was observed. It was found that the new method produces a dense and homogeneous high Tc superconductor for device applications.