NDLI: YBaCuO thick films on planar and curved technical substrates

Content Provider	IEEE Xplore Digital Library
Author	Freyhardt, H.C. Hoffmann, J. Wiesmann, J. Dzick, J. Heinemann, K. Isaev, A. Garcia-Moreno, F. Sievers, S. Usoskin, A.
Copyright Year	2002
Abstract	For high-current applications, homogeneous well-textured high-temperature-superconducting Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBaCuO) films on technical ceramic or metallic substrates are required. The ion-beam-assisted deposition (IBAD) of yttria-stabilized zirconia (YSZ) buffer layers, which serve as templates for the YBaCuO, was extended to large planar areas (20 cm/spl times/20 cm) as well as curved or cylindrical (diameter /spl les/15 mm) substrates. For both types of substrates a pronounced in-plane alignment is observed. A deposition equipment is developed to grow high-quality YBaCuO films also on tubes by pulsed laser deposition (PLD), which is characterized by a high long-term stability both of the deposition rate and of the surface temperature of the growing film. Current densities up to 0.9/spl times/10/sup 6/ A cm/sup -2/ at 77 K in self fields are observed in films on planar Ni foils with biaxially aligned YSZ buffers (bi-YSZ). For the coating of long lengths of tubes and tapes a translation and a rotation of the samples are incorporated both in the buffer as well as in the YBaCuO-deposition process. Furthermore, the dependence of the critical transport current densities, J/sub c/, of the HTS layer on magnetic fields and on mechanical stresses are investigated.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1426
Ending Page	1431
Page Count	6
File Size	834283
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Yttrium barium copper oxide Thick films Substrates Pulsed laser deposition Laser stability Current density Ceramics Buffer layers Optical pulses Surface emitting lasers
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Orientation control of YBaCuO film on flexible metallic substrates with buffer layers using pulsed laser deposition

Buffer layers for high-quality epitaxial YBCO films on Si

Mechanical properties of YBaCuO formed on Ni-based alloy substrates with IBAD buffer layers

Axial strain dependence at 77 K of the critical current of thick YBaCuO films on Ni-alloy substrates with IBAD buffer layers

High critical currents in Y-Ba-Cu-O films on silicon using YSZ buffer layers

YBCO films on metal substrates with biaxially aligned MgO buffer layers

Improvement in switching characteristics of HTS power electric device prepared by pulsed laser deposition

Texture development and superconducting properties of YBCO thick films deposited on buffered metal substrates at various deposition rates

Surface morphology and critical current density of high quality YBa/sub 2/Cu/sub 3/O/sub 7/ thin films on sapphire substrates

YBaCuO thick films on planar and curved technical substrates

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Orientation control of YBaCuO film on flexible metallic substrates with buffer layers using pulsed laser deposition

Buffer layers for high-quality epitaxial YBCO films on Si

Mechanical properties of YBaCuO formed on Ni-based alloy substrates with IBAD buffer layers

Axial strain dependence at 77 K of the critical current of thick YBaCuO films on Ni-alloy substrates with IBAD buffer layers

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