Growth of biaxially aligned buffer layers for YBCO tapes by ion-beam assisted laser deposition and in situ RHEED texture analysis

1997 ◽  
Vol 7 (2) ◽  
pp. 1436-1439 ◽  
Author(s):  
V. Betz ◽  
B. Holzapfel ◽  
L. Schultz
Keyword(s):  
Texture Analysis ◽  
Ion Beam ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Ybco Tapes

Laser Ablated Buffer Layers for YBCO-Tape Conductors

1998 ◽  
Vol 526 ◽  
Author(s):  
B. Holzapfel ◽  
V. Betz ◽  
M.A. Arranz ◽  
N. Reger ◽  
L. Schultz
Keyword(s):  
Room Temperature ◽  
Boundary Diffusion ◽  
Ion Beam ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Heteroepitaxial Growth ◽  
Deposition Parameters ◽  
Oriented Parallel ◽  
Ybco Tape ◽  
Deposition Conditions

AbstractBiaxially oriented yttria stabilized zirconia (YSZ) and Pr6O11 buffer layers were grown at room temperature by Ion-Beam Assisted Laser Deposition (IBALD) on metal substrates. Dependent on deposition parameters, IBALD grown films showed in-plane orientations of about 10° FWHM (full-width at half maximum) for both systems. In contrast to the YSZ system, where best in plane alignment is found for a [111] direction oriented parallel to the ion beam, the Pr6O11 system shows best in-plane alignment at nearly gracing incidence of the ion beam. An additional thin intermediate CeO2 layer improves the heteroepitaxial growth of YBCO on highly biaxially oriented YSZ films. Pulsed Laser Deposition (PLD) was also used to grow epitaxial CeO2 buffer layers directly on biaxially textured Ni-tapes. SIMS investigations showed an interdiffusion zone of about 0.5μm at standard deposition conditions, but no enhanced grain boundary diffusion could be observed.

High-Jc YBCO Conductors Fabricated By Magnetron Deposition

2000 ◽  
Vol 616 ◽  
Author(s):  
N. Savvides ◽  
S. Gnanarajan ◽  
J. Herrmann ◽  
A. Thorley ◽  
A. Katsaros ◽  
...  
Keyword(s):  
Ion Beam ◽  
Coated Conductors ◽  
Buffer Layers ◽  
Similar Degree ◽  
Magnetron Deposition ◽  
X Ray ◽  
Ion Beam Assisted Deposition ◽  
Pole Figures ◽  
Ybco Tapes ◽  
Biaxial Alignment

AbstractSuperconducting YBCO/YSZ/Hastelloy tapes or coated conductors were fabricated by combining ion beam assisted deposition (ILBAD) and magnetron sputtering techniques. The degree of biaxial alignment of the YSZ buffer layers and the epitaxial YBCO films was determined from x-ray pole figures and ø-scans. The best YSZ buffer layers had FWHFM δø= 7°- 10°. The corresponding YBCO tapes achieved a similar degree of biaxial alignment and high critical current density, Jc(77K,0T) = (0.9 – l.25)×106 A cm−2.

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.

Deposition of MgB2 Thin Films on Nb Substrates Using an In Situ Annealing PLD Method

2007 ◽  
Vol 546-549 ◽  
pp. 2027-2030 ◽  
Author(s):  
Yue Zhao ◽  
Yi Sun Wu ◽  
S.X. Dou ◽  
T. Tajima ◽  
O.S. Romanenko
Keyword(s):  
Thin Films ◽  
Large Scale ◽  
Pulsed Laser ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Rf Cavities ◽  
Superconducting Rf ◽  
Mgb2 Thin Films ◽  
Scanning Electron

MgB2 thin films have been coated on Nb substrates without any buffer layers. An in situ pulsed laser deposition (PLD) method was used to prepare the coating. The interface between films and substrates has been characterized by scanning electron microscopy (SEM). Surface impedance has been measured for the MgB2 films on Nb substrates. The results were discussed with regard to the potential large scale applications in superconducting RF cavities.

Ybco Films and Buffer‐Layers Grown In‐Situ by Pulsed Laser Deposition

1989 ◽  
Vol 169 ◽  
Author(s):  
G. A. N. Connell ◽  
D. B. Fenner ◽  
D. K. Fork ◽  
J.B. Boyce ◽  
F.A. Ponce ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Electrical Properties ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Ybco Films ◽  
Structural And Electrical Properties

AbstractYSZ [ (Y2O3)x (ZrO2)1‐x ] buffer‐layers for various compositions, x, and YBCO (Y1Ba2Cu3O7‐δ) films were grown on hydrogen‐terminated Si(100) substrates by laser ablation. The structural and electrical properties of the YBCO are found to depend strongly on x, and to be optimized near x=0.1.

Development of Texture and Microstructure in MgO Buffer Layers Using Ion-Beam Assisted Pulsed Laser Deposition

2007 ◽  
pp. 239-249 ◽  
Author(s):  
Ruben Hühne ◽  
Christoph Beyer ◽  
Bernhard Holzapfel ◽  
Carl-Georg Oertel ◽  
Ludwig Schultz ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Ion Beam ◽  
Pulsed Laser ◽  
Buffer Layers ◽  
Laser Deposition
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