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
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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