NDLI: Intermodulation Distortion in Epitaxial Y-Ba-Cu-O Thick Films and Multilayers

Content Provider	IEEE Xplore Digital Library
Author	Ho Won Jang Kyoung-Jin Choi Folkman, C.M. Oates, D.E. Chang-Beom Eom
Copyright Year	2002
Abstract	We report intermodulation distortion (IMD) in high-quality epitaxial YBa₂Cu₃O_7-delta (YBCO) thick films and multilayers prepared by pulsed-laser deposition (PLD) using multiple targets. Two sets of films were prepared: single-layer and multilayer YBCO films in which a 20-nm-thick CeO₂ inter layer is inserted between every 100-nm-thick YBCO layer. With increasing YBCO thickness from 200 nm to 1200 nm, single-layer films exhibited improvement of IMD, whereas multilayer films showed degradation of IMD. Similarly, YBCO crystalline quality in single-layer films was improved with increasing the thickness, while that in multi-layers films degraded. These results suggest that there is a strong correlation between crystalline quality and IMD for YBCO films. The comparison of experimental data with the theory of IMD suggests that improving crystalline quality is essential for YBCO films with thickness greater than 1 mum to achieve an intrinsic nonlinear behavior. PLD using multiple targets is a very useful method to grow thick YBCO films with high crystalline quality and low IMD.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2855
Ending Page	2858
Page Count	4
File Size	291313
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Intermodulation distortion Yttrium barium copper oxide Thick films Nonhomogeneous media Superconducting films High temperature superconductors Crystallization Degradation Microwave filters Superconducting filters ${\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{7-\delta}$ nonlinearity pulsed-laser deposition
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Intermodulation Distortion in Epitaxial Y-Ba-Cu-O Thick Films and Multilayers

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