Research and Development of Biaxially Textured IBAD-GZO Templates for Coated Superconductors

MRS Bulletin ◽  
2004 ◽  
Vol 29 (8) ◽  
pp. 564-571 ◽  
Author(s):  
Yasuhiro Iijima ◽  
Kazuomi Kakimoto ◽  
Yutaka Yamada ◽  
Teruo Izumi ◽  
Takashi Saitoh ◽  
...  
Keyword(s):  
Research And Development ◽  
Low Cost ◽  
Ion Beam ◽  
Laser Deposition ◽  
Superconducting Tapes ◽  
Stabilized Zirconia ◽  
New Approach ◽  
Vacuum Technology ◽  
Ion Beam Assisted Deposition ◽  
Metalorganic Deposition

AbstractIon-beam-assisted deposition (IBAD) has been used to prepare biaxially textured templates necessary to realizing high superconducting performance in coated conductors.The IBAD method is characterized by the direct deposition of sharply aligned templates on nontextured metal substrates using fluorite-like oxide films (yttrium-stabilized zirconia, Gd2Zr2O7, etc.).Recent progress in vacuum technology for IBAD has made it possible to reproducibly fabricate long lengths (100 m) of IBAD-GZO templates.Continuous deposition of YBCO films on these templates has been achieved by pulsed laser deposition (PLD).Furthermore, a new approach to improving the texture of IBAD templates was found by using CeO2 films grown by PLD.Trifluoroacetate-based metalorganic deposition has also been used instead of PLD to produce superconducting layers on IBAD buffered tapes, aiming at a low-cost process.This article reviews progress in the research and development of biaxially textured templates produced using IBAD and their subsequent use in fabricating superconducting tapes and wires by means of several processes.

Development of conducting buffer architectures using cube textured IBAD-TiN layers

2008 ◽  
Vol 1150 ◽  
Author(s):  
Ruben Hühne ◽  
Konrad Güth ◽  
Martin Kidszun ◽  
Rainer Kaltofen ◽  
Vladimir Matias ◽  
...  
Keyword(s):  
Ion Beam ◽  
Pulsed Laser ◽  
Coated Conductors ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Tin Films ◽  
Ion Beam Assisted Deposition ◽  
Conductive Oxide ◽  
Ybco Coated Conductors ◽  
Seed Layers

AbstractIon-beam assisted deposition (IBAD) offers the possibility to prepare thin textured films on amorphous or non-textured substrates. In particular, the textured nucleation of TiN is promising for the development of a conducting buffer layer architecture for YBCO coated conductors based on the IBAD approach. Accordingly, cube textured IBAD-TiN layers have been deposited reactively using pulsed laser deposition on Si/Si3N4 substrates as well as on polished Hastelloy tapes using different amorphous seed layers. Metallic buffer layers such as Au, Pt or Ir were grown epitaxially on top of the TiN layer showing texture values similar to the IBAD layer. Smooth layers were obtained using a double layer of Au/Pt or Au/Ir. Biaxially textured YBCO layers were achieved using SrRuO3 or Nb-doped SrTiO3 as a conductive oxide cap layer. Finally, different amorphous conducting seed layers were applied for the IBAD-TiN process. Highly textured TiN films were achieved on amorphous Ta0.75Ni0.25 layers showing a similar in-plane orientation of about 8° as on standard seed layers.

Significant texture improvement in single-crystalline-like materials on low-cost flexible metal foils through growth of silver thin films

2019 ◽  
Vol 52 (4) ◽  
pp. 898-902 ◽  
Author(s):  
Yongkuan Li ◽  
Sicong Sun ◽  
Ying Gao ◽  
Yao Yao ◽  
Eduard Galstyan ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Ion Beam ◽  
High Temperature Superconductors ◽  
Single Crystalline ◽  
Metal Foils ◽  
Ion Beam Assisted Deposition ◽  
Out Of Plane ◽  
Flexible Metal ◽  
Ag Film

Low texture spreads of single-crystalline-like materials are critical for high performance of low-cost flexible semiconductors and second-generation high-temperature superconductors based on metal foils. For texture improvement, a single-crystalline-like Ag film is epitaxially grown on an ion-beam-assisted deposition TiN substrate using magnetron sputtering. Ultra-low texture spreads are found in the thin Ag film (∼330 nm), with an out-of-plane texture spread (Δω) of ∼1.03° and an in-plane texture spread (Δϕ) of ∼1.34°. Compared with the texture spreads of the TiN substrate, Δω and Δϕ of the Ag film are reduced by ∼42 and ∼79%, respectively. Applying this Ag buffer, the texture spreads of a single-crystalline-like Ge film are reduced by ∼37% (Δω) and ∼36% (Δϕ). Factors contributing to the texture improvement by Ag are studied using single-crystalline-like Ag films with various thicknesses.

Sign in / Sign up

Export Citation Format

Share Document