Acid anhydrides: a simple route to highly pure organometallic solutions for superconducting films

被引：68
作者：
Roma, N. [1 ]
Morlens, S. [1 ]
Ricart, S. [1 ]
Zalamova, K. [1 ]
Moreto, J. M. [1 ]
Pomar, A. [1 ]
Puig, T. [1 ]
Obradors, X. [1 ]
机构：
[1] Univ Autonoma Barcelona, Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2006年 / 19卷 / 06期
关键词：
D O I：
10.1088/0953-2048/19/6/019
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The presence of impurities in the precursor metal carboxylate solutions for the preparation of epitaxial thin films by metal organic decomposition ( MOD) is substantially avoided by the use of acid anhydrides. In particular, trifluoroacetic anhydride ( TFAA) was used for the synthesis of the starting Y, Ba and Cu trifluoroacetates used in YBa2Cu3O7-x (YBCO) preparation by the MOD process. In this way, highly stable organometallic precursors and a short pyrolysis process could be used leading to YBCO films with high critical currents (J(c) >= 2-4 MA cm(-2) at 77 K). Furthermore, the reproducibility of the results has been ascertained.
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页码：521 / 527
页数：7
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