Highly oriented Hghyphen;Bahyphen;Cahyphen;Cuhyphen;O superconducting thin films

摘要

Hghyphen;Bahyphen;Cahyphen;Cuhyphen;O thin films have been prepared on SrTiO3(100) substrates by rfhyphen;magnetron sputtering and subsequent annealing. The annealing treatment was carried out in a Hghyphen;free atmosphere at the relatively low temperature of 650ndash;700thinsp;deg;C. The films showed a highly oriented structure with thecaxis of the Hghyphen;1201 phase perpendicular to the substrates. The Hghyphen;Bahyphen;Cahyphen;Cuhyphen;O films exhibited a sharp superconducting transition at around 85 K, and a resistivity anomaly at the higher temperature of 130 K was observed for some films.