Journal ArticleDOI
Highly oriented as-deposited superconducting laser ablated thin films of Y1Ba2Cu3O7−δ on SrTiO3, zirconia, and Si substrates
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TLDR
In this paper, the authors used an excimer laser ablation of an Y1Ba2Cu3O7−δ pellet in 0.1-0.2 Torr of O2 ambient to deposit thin superconducting films onto SrTiO3, yttria-stabilized zirconia (YSZ), and silicon substrates at 600-700 C.Abstract:
KrF excimer laser ablation of an Y1Ba2Cu3O7−δ pellet in 0.1–0.2 Torr of O2 ambient was used to deposit thin superconducting films onto SrTiO3, yttria‐stabilized zirconia (YSZ), and silicon substrates at 600–700 °C. The as‐deposited 1‐μm‐thick films at 650–700 °C substrate temperature were superconducting, without further high‐temperature annealing. All films had a similar Tc onset of ∼92 K but different zero‐resistance Tc of 90, 85, and 70 K for the films on SrTiO3, YSZ, and Si substrates, respectively. Angular x‐ray diffraction analysis showed that all the films were highly oriented with the c axis perpendicular to their surface. Critical current densities at 77 K were about 40 000 and 10 000 A/cm2 for the films on SrTiO3 and YSZ, respectively. Smooth surface morphology was observed in all films, with occasional defects and cracks in the films on YSZ, which seems to explain the lower critical current in these films.read more
Citations
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Epitaxial films of YBa2Cu3O7−δ on NdGaO3, LaGaO3, and SrTiO3 substrates deposited by laser ablation
TL;DR: Frequency-doubled Nd:YAG laser (532 nm) pulses of 1.7 J/cm2 and 10 ns duration were used to deposit thin films of YBa2 Cu3 O7−δ by laser ablation on NdGaO3, La GaO3, and SrTiO3 substrates held at 725±5 °C in 0.2 Torr of O2 ambient as mentioned in this paper.
Journal ArticleDOI
Laser wavelength dependent properties of YBa2Cu3O7−δ thin films deposited by laser ablation
TL;DR: In this paper, YBa2Cu3O7−δ thin films were deposited onto (100) SrTiO3 substrates using 1064, 532, 355, 248, and 193 nm laser ablation.
Journal ArticleDOI
In situ processing of epitaxial Y‐Ba‐Cu‐O high Tc superconducting films on (100) SrTiO3 and (100) YS‐ZrO2 substrates at 500–650 °C
TL;DR: In this article, a dc bias voltage of +300 V was applied to an interposing ring to reduce the substrate temperature from 650 to 500°C for obtaining epitaxial films, and the thickness of the films varied from 500 to 5000 A with superconducting transition temperatures varying from 87 to 90 K for 650°C deposits.
Journal ArticleDOI
Interaction of laser radiation with solid materials and its significance to analytical spectrometry: a review
Susan A. Darke,Julian F. Tyson +1 more
Journal ArticleDOI
Multilayer YBa2Cu3Ox‐SrTiO3‐YBa2Cu3Ox films for insulating crossovers
TL;DR: In this article, the authors describe a procedure for fabricating YBa2Cu3Ox and SrTiO3 thin-film trilayer structures, each of which is grown in situ by excimer laser deposition onto a heated (100) MgO substrate.
References
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Journal ArticleDOI
Single-Crystal YBa2Cu3O7-x Thin Films by Activated Reactive Evaporation
TL;DR: In this paper, a single-crystal thin film with the c axis perpendicular to the substrate plane has been grown on the (100) surface of SrTiO3 and the substrate temperature was kept below 600°C and the oxidation treatment was performed at below 500°C.
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Deposition of superconducting Y‐Ba‐Cu‐O films at 400 °C without post‐annealing
TL;DR: In this article, a superconducting thin film of Y1Ba2Cu3O7−x was fabricated using the process of plasma assisted laser deposition and the substrate temperature was as low as 400°C and high-temperature postannealing in an O2 atmosphere was not necessary.
Journal ArticleDOI
Low‐temperature preparation of high Tc superconducting thin films
X. D. Wu,A. Inam,Thirumalai Venkatesan,C. C. Chang,E. W. Chase,P. Barboux,Jean-Marie Tarascon,B. Wilkens +7 more
TL;DR: In this article, thin superconducting films of Y•Ba•Cu•O were prepared at 650°C using the pulsed laser deposition technique and they exhibited superconductivity with zero resistance at temperatures as high as 83 K.
Journal ArticleDOI
Production of YBa2Cu3O7−y superconducting thin films in situ by high‐pressure reactive evaporation and rapid thermal annealing
TL;DR: In this article, a high pressure reactive evaporation process was used to produce smooth YBa2Cu3O7−y high Tc superconducting films without the necessity of a postdeposition oven anneal cycle.
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Superconducting Y1Ba2Cu3O7−x films on Si
TL;DR: By depositing YBaCuO films at low substrate holder temperatures (600°C) using a pulsed laser, films with the orthorhombic phase exhibiting superconductivity with high zero resistance temperatures (Tc0) were produced as mentioned in this paper.