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arXiv 1012.0894cond-mat.supr-concond-mat.mtrl-sci
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在IBAD-MgO衬底上外延生长Ba(Fe1-xCox)2As 2超导薄膜

Epitaxial Growth of Superconducting Ba(Fe1-xCox)2As2 Thin Films on Technical IBAD-MgO Substrates

Kazumasa Iida, Jens Hänisch, Sascha Trommler, Vladimir Matias, Silvia Haindl, Fritz Kurth, Irene Lucas del Pozo, Ruben Hühne, Martin Kidszun, Jan Engelmann, Lud… 展开作者

Kazumasa Iida, Jens Hänisch, Sascha Trommler, Vladimir Matias, Silvia Haindl, Fritz Kurth, Irene Lucas del Pozo, Ruben Hühne, Martin Kidszun, Jan Engelmann, Ludwig Schultz, Bernhard Holzapfel

摘要:

采用铁缓冲结构,在离子束辅助沉积(IBAD)MgO涂层导体模板上实现了Co掺杂BaFe_2As_2(Ba-122)超导薄膜的双轴织构生长。铁磷属元素化物涂层导体表现出超导转变温度为21.5 K,这是略低于钴掺杂的Ba-122薄膜单晶MgO基板上。即使在8 K下,自场临界电流密度也已超过10^5 A/cm 2。目前的实验突出了铁基超导体的可能涂层导体应用的潜力。

英文摘要:

The biaxially textured growth of superconducting Co-doped BaFe2As2 (Ba-122) thin films has been realized on ion beam assisted deposition (IBAD) MgO coated conductor templates by employing an iron buffer architecture. The iron pnictide coated conductor showed a superconducting transition temperature of 21.5 K, which is slightly lower than that of Co-doped Ba-122 films on single crystalline MgO substrates. A self-field critical current density of over 10^5 A/cm2 has already been achieved even at 8 K. The current experiment highlights the potential of possible coated conductor applications of the iron-based superconductors.

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