NDLI: Flux Pinning Characteristics of <formula formulatype=inline> <tex Notation=TeX>${rm Sm}_{1+x}{rm Ba}_{2-x}{rm Cu}_{3}{rm O}_{y}$</tex> </formula> Films With the Additional <formula formulatype=inline> <tex Notation=TeX>$c$</tex></formula>-Axis Correlated Pinning Centers

Content Provider	IEEE Xplore Digital Library
Author	Ozaki, T. Yoshida, Y. Ichino, Y. Harada, T. Takai, Y. Matsumoto, K. Ichinose, A. Horii, S. Mukaida, M. Kita, R.
Copyright Year	2002
Abstract	It is known that columnar defects comprised of self-organized BaZrO₃ (BZO) nanorods within REBa₂Cu₃Oy (REBCO) films are attractive as c-axis correlated pinning centers. On the other hand, we have fabricated high-J_c Sm_1+xBa_2-xCu₃O_y (SmBCO) films including nanosized low-T_c phases by using the low-temperature growth (LTG) technique. In this study, BZO nanorods were added to the LTG-SmBCO film for a further enhancement of the magnetic flux pinning. Additionally, we also deposited a conventional PLD-SmBCO film including BZO nanorods and discussed differences of the flux pinning properties and microstructures between LTG- and PLD-SmBCO films. In a cross-sectional transmission electron microscopy (TEM) image of the BZO doped PLD-SmBCO film, we could see the self-organized BZO nanorods were about 10 nm in diameter, extending along the c-axis of the film. In contrast, in the BZO doped LTG-SmBCO film, the high density BZO nanorods with smaller diameters tended to be short columns and tilted against the c-axis direction. These facts can be attributed to a suppression of the surface diffusion length of adatoms and/or an increase of nucleation frequency due to the low substrate temperature during the growth of the BZO doped LTG-SmBCO film. Furthermore, we concluded that differences of superconducting properties between the BZO doped PLD- and LTG-SmBCO films might be attributed to the difference in the number density of BZO nanorods which generated lattice strain around them.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3507
Ending Page	3510
Page Count	4
File Size	1560752
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	Flux pinning Magnetic films Superconducting films Magnetic flux Microstructure Transmission electron microscopy Frequency Substrates Temperature Lattices ${\rm Sm}_{1+x}{\rm Ba}_{2-x}{\rm Cu}_{3}{\rm O}_{y}$ ${\rm BaZrO}_{3}$ pinning self-organization
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Flux Pinning Properties and Microstructure in ${rm Sm}_{1+x}{rm Ba}_{2-x}{rm Cu}_{3}{rm O}_{y}$ Films With ${rm BaZrO}_{3}$ Nanorods Fabricated by Vapor-Liquid-Solid Growth Technique

Magnetic Field Dependence of Critical Current Density and Microstructure in ${rm Sm}_{1+x}{rm Ba}_{2-x}{rm Cu}_{3}{rm O}_{y}$ Films on Metallic Substrates

Effect of ${rm BaZrO}_{3}$ Addition and Film Growth on Superconducting Properties of $({rm Nd},{rm Eu},{rm Gd}){rm Ba}_{2}{rm Cu}_{3}{rm O}_{y}$ Thin Films

Flux Pinning of Y-Ba-Cu-O Films Doped With ${rm BaZrO}_{3}$ Nanoparticles by Multilayer and Single Target Methods

Magnetic Field Dependence of Critical Current and Microstructure in TFA-MOD ${rm Y}_{1-x}{rm Sm}_{x}{rm Ba}_{2}{rm Cu}_{3}{rm O}_{y}$ With Nanoparticles for Coated Conductors

Difference Between ${rm BaSnO}_{3}$ and ${rm BaZrO}_{3}$ Nano-Rods for C-Axis-Correlated Pinning Properties in ${rm REBa}_{2}{rm Cu}_{3}{rm O}_{rm y}$

Enhanced Flux Pinning Properties of MOD-Processed $ hbox{YBa}_{2}hbox{Cu}_{3}hbox{O}_{7 - delta}$ Thin Films With $hbox{BaZrO}_{3}$ Nanoparticles Using a Ba-Deficient Coating Solution

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

Enhancement of Critical Current in ${rm Sm}_{1+x}{rm B}_{2-x}{rm Cu}_{3}{rm O}_{y}$ Multilayer Films With the Insertion of Sm-Rich Phase

Flux Pinning Characteristics of ${rm Sm}_{1+x}{rm Ba}_{2-x}{rm Cu}_{3}{rm O}_{y}$ Films With the Additional $c$-Axis Correlated Pinning Centers

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