Research Initiation: Thin Film Fabrication and Character- ization of the Superconductor Ba(Pb1-xBix)O3

陶瓷超导体Ba（Pb 1-xBix）O3的薄膜是 由于它们不寻常的超导性和 电子特性，以及它们在超导中的潜在用途 电子设备。 虽然这种高质量的单晶 材料可以通过陶瓷加工技术生产，它具有 制作高质量的电影更加困难。薄膜样品是 目前正在（在日本）通过射频溅射从一个单一的 复合目标 在这个项目中， 多靶溅射沉积系统被用于制造 在沉积过程中具有更严格控制的薄膜。 通过 研究了沉积参数与沉积速率之间的相互关系， 由此产生的薄膜特性，应该可以合成 具有与最好的单晶体几乎相同的性质的薄膜 样品 这样高质量的电影可以用来研究起源 异常高的超导临界温度（Tc = 13 K） 在这种低载流子密度（n 1021/cm 3）材料中。 此外该 这种材料在超导电子学中的潜在用途，以及 尤其是作为微波探测器的应用。

Thin films of the ceramic superconductor Ba(Pb1-xBix)O3 are of considerable interest both for their unusual superconducting and electronic properties, and for their potential uses in superconducting electronic devices. While high quality single crystals of this material can be produced by ceramic processing techniques, it has proven more difficult to make high quality films. Thin film samples are currently being made (in Japan) by RF sputtering from a single composite target. In this project, an ultrahigh vacuum multiple-target sputter deposition system is being used to fabricate thin films with much tighter control over the deposition process. By studying the interrelation between the deposition parameters and the resulting film characteristics, it should be possible to synthesize thin films with properties nearly identical to the best single crystal samples. Such high quality films can then be used to study the origins of the unusually high superconducting critical temperature (Tc = 13K) in this low carrier density (n 1021/cm3) material. In addition, the potential uses of this material in superconducting electronics, and especially as a microwave detector, are being investigated.