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.

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.

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

Single buffer layers of LaMnO3 or La0.7Sr0.3MnO3 for the development of Yba2Cu3O7−δ-coated conductors: A comparative study

2002 ◽  
Vol 17 (9) ◽  
pp. 2193-2196 ◽  
Author(s):  
T. Aytug ◽  
M. Paranthaman ◽  
H. H. Zhai ◽  
H. H. Christen ◽  
S. Sathyamurthy ◽  
...  
Keyword(s):  
Superconducting Property ◽  
Pulsed Laser ◽  
Sputter Deposition ◽  
Coated Conductors ◽  
Buffer Layers ◽  
Laser Deposition ◽  
Ybco Films ◽  
Ni Alloy ◽  
Current Densities ◽  
Ybco Coated Conductors

Single, epitaxial buffer layers of insulating LaMnO3 (LMO) or conductive La0.7Sr0.3MnO3 (LSMO) have been grown by sputter deposition on biaxially textured Ni and Ni–alloy substrates. We report baseline investigations of their compatibility with the Yba2Cu3O7−δ (YBCO) coatings and demonstrate biaxially textured YBCO films grown by pulsed-laser deposition on these single-buffered tapes. Superconducting property characterizations revealed better properties for YBCO films on LMO-buffered tapes relative to those grown on LSMO layers. Self-field critical current densities (Jc) exceeding 1 × 106 A/cm2 at 77 K have been obtained for the YBCO (200 nm) films on LMO-buffer layers. These results offer prospects for the use of single, LMO-buffered metal tapes in the development of practical 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.

Fabrication and Electrical Characteristics of Asymmetric Rings Made of HTS YBCO Films Obtained by Pulsed Laser Deposition

2019 ◽  
Vol 48 (2) ◽  
pp. 119-126 ◽  
Author(s):  
A. I. Il’in ◽  
A. A. Ivanov ◽  
O. V. Trofimov ◽  
A. A. Firsov ◽  
A. V. Nikulov ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Electrical Characteristics ◽  
Ybco Films
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