NDLI: Enhanced Flux Pinning Properties in Self-Assembled Magnetic <formula formulatype=inline> <tex Notation=TeX>$hbox{CoFe}_{2}hbox{O}_{4}$</tex></formula> Nanoparticles Doped <formula formulatype=inline><tex Notation=TeX>$ hbox{YBa}_{2}hbox{Cu}_{3}hbox{O}_{7

Content Provider	IEEE Xplore Digital Library
Author	Chen-Fong Tsai Li Chen Aiping Chen Khatkhatay, F. Wenrui Zhang Haiyan Wang
Copyright Year	2002
Abstract	In this work, self-assembled magnetic CoFe₂O₄ (CFO) nanoparticles are introduced into YBa₂Cu₃O_7-δ (YBCO) thin films as both cap and buffer layers to enhance the flux pinning properties. CFO nanoparticles are incorporated into the YBCO matrix by alternative laser ablation of the YBCO and CFO targets by employing the pulsed laser deposition method, which is compatible with the commercial processing method of coated conductors. By introducing ferromagnetic nanoinclusions, both magnetic and defect pinning can be incorporated into YBCO thin films to achieve stronger pinning effects under higher applied magnetic field regimes. Detailed microstructural studies are conducted to verify the morphologies of all doped samples. Both self-field and in-field performance (J_c^sf and J_c^in-field(H//c)) measured at various temperatures (65, 40, and 5 K) are studied. The results suggest that the CFO nanoparticle cap is an ideal approach to introduce ordered magnetic pinning centers in the YBCO thin films, which shows enhanced superconducting properties both at self-field and under high applied field regimes without degrading YBCO's intrinsic properties.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	8001204
Ending Page	8001204
Page Count	1
File Size	700971
File Format	PDF
ISSN	10518223
Volume Number	23
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-01
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 Nanoparticles Superconducting magnets Buffer layers Temperature measurement Magnetic flux Magnetic field measurement flux-pinning Coated conductor critical current density ferromagnetic nanoparticles
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Enhanced Flux Pinning Properties in $hbox{YBa}_{2}hbox{Cu}_{3}hbox{O}_{7-delta}$/ $(hbox{CoFe}_{2}hbox{O}_{4})_{0.3}(hbox{CeO}_{2})_{0.7} $ Multilayer Thin Films

Microstructure and Superconducting Behavior of ${hbox{YBa}}_{2}{hbox{Cu}}_{3}{hbox{O}}_{7-delta}$ Films Fabricated From Colloids of Nanoparticles

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

Enhanced $J_{c}$ in $hbox{rm YBa}_{2}hbox{rm Cu}_{3}hbox{O}_{7 - delta}$ Thin Films by Low-Level Cr Doping

Strong Flux Pinning by Magnetic Interlayers Compatible With ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$

Microstructural and Pinning Properties of ${rm YBa}_{2}{rm Cu}_{3}{rm O}_{7-delta}$ Thin Films Doped With Magnetic Nanoparticles

Switching Response of $hbox{YBa}_{2}hbox{Cu}_{3} hbox{O}_{7 - delta}$ to Simultaneous Application of Near-Critical Current, Field, and Temperature

Critical Conductivity Fluctuations of $hbox{YBa}_{2}hbox{Cu}_{2.985}hbox{Fe}_{0.015}hbox{O}_{7-delta}$ Single Crystal

Effect of $hbox{Y}_{2}hbox{O}_{3}$ Seed Layer on Epitaxial Growth of Oxide Barrier Layer for YBCO Coated Conductor

Enhanced Flux Pinning Properties in Self-Assembled Magnetic $hbox{CoFe}_{2}hbox{O}_{4}$ Nanoparticles Doped $ hbox{YBa}_{2}hbox{Cu}_{3}hbox{O}_{7 - delta}$ Thin Films

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