C-AXIS ORIENTED THIN BI2SR2CACU2O8+DELTA-FILMS PREPARED BY FLASH-EVAPORATION

被引:2
作者
STOLZEL, C
HUTH, M
ADRIAN, H
机构
[1] Institut für Festkörperphysik, Technische Hochschule Darmstadt, Darmstadt
来源
PHYSICA C | 1992年 / 204卷 / 1-2期
关键词
D O I
10.1016/0921-4534(92)90567-V
中图分类号
O59 [应用物理学];
学科分类号
摘要
Superconducting thin films of Bi2Sr2CaCu2O8+delta were prepared by flash-evaporation. Fine grained powder of the stoichiometry Bi2Sr2.5Ca2Cu2Oy was periodically dropped onto and flash-evaporated by a 1900-degrees-C hot tantalum boat and deposited on an unheated [100]-SrTiO3-substrate. Post-annealing yielded highly c-axis oriented, single phase films, which showed superconductivity up to 81 K. Resistive transitions and critical current densities were measured in magnetic fields up to 6 T with the field direction parallel and perpendicular to the c-axis.
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页码:15 / 20
页数:6
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