Inclined-Substrate Pulsed Laser Deposition of Yttriastabilized Zirconia Template Film for YBCO Coated Conductors

2012 ◽  
pp. 15-22
Author(s):  
B. Ma ◽  
M. Li ◽  
B. L. Fisher ◽  
R. E. Koritala ◽  
R. M. Baurceanu ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Coated Conductors ◽  
Laser Deposition ◽  
Ybco Coated Conductors

YBa2Cu3O7-y−coated conductors with high engineering current density

2000 ◽  
Vol 15 (12) ◽  
pp. 2647-2652 ◽  
Author(s):  
M. Paranthaman ◽  
C. Park ◽  
X. Cui ◽  
A. Goyal ◽  
D. F. Lee ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Critical Current ◽  
Current Density ◽  
Ybco Film ◽  
Pulsed Laser ◽  
Coated Conductors ◽  
Laser Deposition ◽  
Ex Situ ◽  
Layer Sequence ◽  
Ybco Coated Conductors

Short segments of YBa2Cu3O7-y (YBCO) coated conductors were fabricated on rolling-assisted biaxially textured substrates (RABiTS) with a layer sequence of CeO2/YSZ/Ni using an ex situ BaF2 precursor process. Pulsed laser deposition (PLD) was used to deposit both YSZ and CeO2 layers. The YBCO films were grown using e-beam coevaporated Y–BaF2–Cu precursors followed by postannealing. An overall engineering current density, JE, of 28,000 A/cm2 and critical current, Ic, of 147 A/cm width at 77 K were achieved for a 1.6-μm-thick YBCO film. This result demonstrates the possibility of using both the ex situ BaF2 precursor approach and the RABiTS process for producing long lengths of high-JE coated conductors.

YBCO-Coated Conductors Manufactured by High-Rate Pulsed Laser Deposition

MRS Bulletin ◽  
2004 ◽  
Vol 29 (8) ◽  
pp. 583-589 ◽  
Author(s):  
Alexander Usoskin ◽  
Herbert C. Freyhardt
Keyword(s):  
Pulsed Laser Deposition ◽  
High Temperature Superconductors ◽  
Pulsed Laser ◽  
Critical Currents ◽  
Coated Conductors ◽  
Laser Deposition ◽  
High Rate ◽  
Quasi Equilibrium ◽  
Ybco Films ◽  
Ybco Coated Conductors

AbstractHigh-temperature superconductors of the second generation—coated conductors—are based on an architecture of YBCO films deposited on a well-textured substrate tape. The deposition technique used in the processing of YBCO films is responsible not only for both the resulting critical currents in the conductors and the cost efficiency of the employed production route, but also for the ultimate viability of the chosen technology. This article describes an advanced deposition method for YBCO films using high-rate pulsed laser deposition (HR-PLD).An elaborate variable azimuth ablation allows target roughening to be considerably reduced in the course of continuous deposition, and as a result, the integral deposition speed and speed stability can be increased to technologically interesting high values.Well-selected process parameters have been demonstrated to yield high currents of up to 480A/cm-width in short tapes and 360A/cm-width in 6-m-long tapes.Together with quasi-equilibrium heating, the HR-PLD method allows the processing of long-length YBCO-coated conductors and offers a cost-efficient route for their production on an industrial scale.

scholarly journals Development of meter-long YBCO coated conductors produced by ion beam assisted deposition and pulsed laser deposition

2000 ◽  
Vol 341-348 ◽  
pp. 2305-2308 ◽  
Author(s):  
S.R. Foltyn ◽  
P.N. Arendt ◽  
R.F. DePaula ◽  
P.C. Dowden ◽  
J.Y. Coulter ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Ion Beam ◽  
Pulsed Laser ◽  
Coated Conductors ◽  
Laser Deposition ◽  
Ion Beam Assisted Deposition ◽  
Ybco Coated Conductors

Pulsed Laser Deposition of Y1Ba2Cu3O7-δ?Thin Films in High Oxygen Partial Pressures

2001 ◽  
Vol 689 ◽  
Author(s):  
Timothy J. Haugan ◽  
Paul N. Barnes ◽  
Rama M. Nekkanti ◽  
Iman Maartense ◽  
Lyle B. Brunke ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Coated Conductors ◽  
Laser Deposition ◽  
Critical Temperatures ◽  
Partial Pressures ◽  
Wide Range ◽  
Lower Oxygen ◽  
Ybco Coated Conductors ◽  
Very High

ABSTRACTPulsed laser deposition of Yba2Cu3O7-δ?(YBCO) coated conductors was studied for the range of P(O2) from 120 mTorr to 1200 mTorr, higher than typically used oxygen partial pressures during deposition. The purpose of the investigation was to determine the sensitivity of YBCO film quality to varying P(O2) for scaled-up fabrication of long-length coated conductors. Deposition at high P(O2) (≥?400 mTorr) gave very high and more consistent critical temperatures (Tc ≈?92 ±?0.4 °K) than results obtained at lower oxygen partial pressures (≤?200 mTorr) as determined by magnetic susceptibility measurements. Typically, the lower partial pressures are used although the laser fluence used in this research (3.2 J/cm2) is higher than typical. Transport Jc's were consistantly high for a wide range of oxygen pressures, 5–8 ×?106 A/cm2 at 77 K, self-field for P(O2) = 200–1200 mTorr. These results indicate that pulsed laser deposition of YBCO is relatively insensitive to P(O2) at the higher pressures of oxygen considered.

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.

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