Fe(Se,Te) coated conductors deposited on simple rolling-assisted biaxially textured substrate templates

被引：29
作者：
Sylva, G. [1 ,2 ]
Augieri, A. [3 ]
Mancini, A. [3 ]
Rufoloni, A. [3 ]
Vannozzi, A. [3 ]
Celentano, G. [3 ]
Bellingeri, E. [1 ]
Ferdeghini, C. [1 ]
Putti, M. [1 ,2 ]
Braccini, V [1 ]
机构：
[1] CNR SPIN, Cso FM Perrone 24, I-16152 Genoa, Italy
[2] Univ Genoa, Phys Dept, Via Dodecaneso 33, I-16146 Genoa, Italy
[3] ENEA Frascati Res Ctr, Via E Fermi 45, I-00044 Frascati, Italy
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2019年 / 32卷 / 08期
关键词：
Fe(Se; Te); thin films; coated conductors; RABiTS; CeO2; buffer; PULSED-LASER DEPOSITION; W-RABITS; FILMS; MICROSTRUCTURE;
D O I：
10.1088/1361-6668/ab0e98
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper we study the feasibility of Fe(Se, Te) coated conductors on a simple rolling-assisted biaxially textured substrate (RABiTS) template. Starting from commercially available Ni-5 at% W tapes which show an out-of-plane orientation of about 7 degrees and an in-plane orientation around 5 degrees, we realized a RABiTS template for Fe(Se, Te) coated conductor fabrication by depositing CeO2 thin films on the metallic tape. The oxide buffer layers, deposited via pulsed laser ablation, exhibit an out-of-plane and an in-plane orientation suitable for Fe(Se, Te) deposition and act as a chemical barrier against Ni diffusion. Fe(Se, Te) thin films deposited on such a simple template show a superconducting transition at 16 K and very high upper critical field values with a Delta T-c,(0) of only 3 K in 18 T. The transport critical current reaches values of 1.7 x 10(5) A cm(-2) at 4.2 K in self-field and is reduced by less than one order of magnitude up to 18 T, remaining isotropic with respect to the magnetic field direction.
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页数：9
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