Superconducting Mg-B films by pulsed-laser deposition in an in situ two-step process using multicomponent targets

被引:106
作者
Blank, DHA
Hilgenkamp, H
Brinkman, A
Mijatovic, D
Rijnders, G
Rogalla, H
机构
[1] Univ Twente, MESA Res Inst, NL-7500 AE Enschede, Netherlands
[2] Univ Twente, Dept Appl Phys, Low Temp Div, NL-7500 AE Enschede, Netherlands
关键词
D O I
10.1063/1.1385345
中图分类号
O59 [应用物理学];
学科分类号
摘要
Superconducting thin films have been prepared in an in situ two-step process, using the Mg-B plasma generated by pulsed-laser ablation. The target was composed of a mixture of Mg and MgB2 powders to compensate for the volatility of Mg and, therefore, to ensure a high Mg content in the film. The films were deposited at temperatures ranging from room temperature to 300 degreesC followed by a low-pressure in situ annealing procedure. Various substrates have been used and diverse ways to increase the Mg content into the film were applied. The films show a sharp transition in the resistance and have a zero resistance transition temperature of 22-24 K. (C) 2001 American Institute of Physics.
引用
收藏
页码:394 / 396
页数:3
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