Growth and characterization of TlBaCaCuO thin films

被引：8

作者：

Siegal, MP ^{[1
]}

Venturini, EL ^{[1
]}

Overmyer, DL ^{[1
]}

Newcomer, PP ^{[1
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

JOURNAL OF SUPERCONDUCTIVITY | 1998年 / 11卷 / 01期

关键词：

superconductor; thallium; Tl-Ba-Ca-Cu-O; film; growth;

D O I：

10.1023/A:1022687408646

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We discuss two methods for the ex-situ furnace growth of pure TlBaCaCuO superconducting thin films on LaAlO3(100) substrates. The traditional approach of "crucible processing" is used to grow high-quality films of several of the TlBaCaCuO phases. "Two-zone processing" promises greater thermodynamic control, yet film properties from optimized films are not as good as those grown from crucibles. The transport kinetics of Tl-oxide vapor from a source to the film surface appears to be a dominant factor. The best results are from single-phase Tl-1212 and Tl-2212 thin films. T-c's are high and sharp, J(c)'s > 1 x 10(7) A/cm(2) at 5 K, and surface morphologies are relatively smooth.

引用

收藏

页码：135 / 138

页数：4

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