NDLI: <formula formulatype=inline><tex Notation=TeX>${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$</tex></formula> Films Grown on Faceted Sapphire Fiber

Content Provider	IEEE Xplore Digital Library
Author	Yongli Xu Djeu, N. Zongqi Qian Ziyang Xu Peng He Bhattacharya, R.
Copyright Year	2002
Abstract	There have been great advancements in the 2nd generation (2G) high temperature superconductors (HTS) wires termed coated conductors (CCs). Nevertheless, due to the high aspect ratio and the nature of metallic substrates, AC loss is a serious problem for the coated conductors. In this paper, we present a novel approach of fabrication of thin faceted sapphire fibers as substrates for YBCO film growth by laser heated pedestal growth (LHPG) technology. Single crystal sapphire fibers of about 100 μm in diameter with two r-plane facets on the sides have been successfully grown. By adjusting seed orientation and process optimization, the growth was tuned to the a-axis growth with extremely smooth r-plane on the sides. A buffer layer of about 30 nm was then deposited by magnetron sputtering followed by the superconductor layer of YBCO film. A critical current density over 1 MA/cm² has been demonstrated at 77 K self-field. Experimental results shows that fiber orientation and surface smoothness are critical for the performance of YBCO films and that can be achieved by the technologies presented.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3281
Ending Page	3284
Page Count	4
File Size	415368
File Format	PDF
ISSN	10518223
Volume Number	21
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-01
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 Conductors Substrates Surface morphology Surface treatment Sputtering YBCO High-temperature superconductors laser heated pedestal growth (LHPG) sapphire fiber thin films
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Surface Morphology and Microstructure of Thick ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$ Films on Vicinal $r$-Cut Sapphire Buffered With ${rm CeO}_{2}$

Microstructural Characterization of ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-{rm x}}$ Films With ${rm BaZrO}_{3}$ Nanorods Grown on Vicinal ${rm SrTiO}_{3}$ Substrates

Morphology of silver on YBa/sub 2/Cu/sub 3/O/sub 7- delta / thin films

Effects of Proton Irradiation on the Microwave Surface Resistance of ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$ Films

Understanding the MOD Process Between Decomposition and YBCO Formation

Nucleation Study of ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$ (YBCO) Films by Modified TFA-MOD Approach

Origin of Surface Morphology Variation During Pulsed Laser Deposition of ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7}$ Superconducting Films

${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7}$ Coated Conductor Grown by Hybrid Liquid Phase Epitaxy

Growth of Thick ${rm BaZrO}_{3}$-Doped ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$ Films With High Critical Currents in High Applied Magnetic Fields

${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$ Films Grown on Faceted Sapphire Fiber

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Surface Morphology and Microstructure of Thick ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$ Films on Vicinal $r$-Cut Sapphire Buffered With ${rm CeO}_{2}$

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