Enhancing the Superconducting Properties of Y-Ba-Cu-O by CuO2 Site Doping

Yu X. Zhou; Wai Lo; Tong B. Tang; Kamel Salama

doi:10.1109/77.919868

Enhancing the Superconducting Properties of Y-Ba-Cu-O by CuO₂ Site Doping

Yu X. Zhou, Wai Lo, Tong B. Tang, Kamel Salama

Research output: Contribution to journal › Journal article › peer-review

13 Citations (Scopus)

Abstract

The incorporation of certain cations such as Zn²⁺ onto the ab-planes of the YBa₂Cu₃O_7-δ (123) lattice is known to have effects on the superconducting critical transition temperature. On manipulating the distance between the dopant sites, isolated weak superconducting regions with dimensions comparable to the coherence length of YBCO can be introduced into melt textured large YBCO grains. This paper presents a study using electron microprobe analysis, microscopy and transport property measurements on the processing and the distribution of Zn²⁺ in Zn-YBCO so as to understand as well as optimize the processing conditions, doping level, T_c, flux pinning behaviour and field trapping properties of these materials. These results were correlated with the solidification mechanisms of YBCO as well as the size of weak superconducting regions induced by Zn²⁺.

Original language	English
Pages (from-to)	3700-3705
Number of pages	6
Journal	IEEE Transactions on Applied Superconductivity
Volume	11
Issue number	1
DOIs	https://doi.org/10.1109/77.919868
Publication status	Published - Mar 2001
Externally published	Yes
Event	2000 Applied Superconductivity Conference - Virginia Beach, VA, United States Duration: 17 Sept 2000 → 22 Sept 2000

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

User-Defined Keywords

Melt texturing
Transport properties
YBCO
Zn-doping

Access to Document

10.1109/77.919868

Cite this

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title = "Enhancing the Superconducting Properties of Y-Ba-Cu-O by CuO2 Site Doping",

abstract = "The incorporation of certain cations such as Zn2+ onto the ab-planes of the YBa2Cu3O7-δ (123) lattice is known to have effects on the superconducting critical transition temperature. On manipulating the distance between the dopant sites, isolated weak superconducting regions with dimensions comparable to the coherence length of YBCO can be introduced into melt textured large YBCO grains. This paper presents a study using electron microprobe analysis, microscopy and transport property measurements on the processing and the distribution of Zn2+ in Zn-YBCO so as to understand as well as optimize the processing conditions, doping level, Tc, flux pinning behaviour and field trapping properties of these materials. These results were correlated with the solidification mechanisms of YBCO as well as the size of weak superconducting regions induced by Zn2+.",

keywords = "Melt texturing, Transport properties, YBCO, Zn-doping",

author = "Zhou, {Yu X.} and Wai Lo and Tang, {Tong B.} and Kamel Salama",

note = "Funding Information: This work was supported by the State of Texas through the Texas Center for Superconductivity at the University of Houston, Texas, USA and by the Research Grant Committee of the Hong Kong SAR Government under RGC/97-98/71. This work was supported by the State of Texas through the Texas Center for Superconductivity at the University of Houston and the Research Grant Committee of The Hong Kong SAR Government under RGC/97-9817 1. Publisher copyright: {\textcopyright} 2001 IEEE; 2000 Applied Superconductivity Conference ; Conference date: 17-09-2000 Through 22-09-2000",

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AU - Zhou, Yu X.

AU - Lo, Wai

AU - Tang, Tong B.

AU - Salama, Kamel

N1 - Funding Information: This work was supported by the State of Texas through the Texas Center for Superconductivity at the University of Houston, Texas, USA and by the Research Grant Committee of the Hong Kong SAR Government under RGC/97-98/71. This work was supported by the State of Texas through the Texas Center for Superconductivity at the University of Houston and the Research Grant Committee of The Hong Kong SAR Government under RGC/97-9817 1. Publisher copyright: © 2001 IEEE

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N2 - The incorporation of certain cations such as Zn2+ onto the ab-planes of the YBa2Cu3O7-δ (123) lattice is known to have effects on the superconducting critical transition temperature. On manipulating the distance between the dopant sites, isolated weak superconducting regions with dimensions comparable to the coherence length of YBCO can be introduced into melt textured large YBCO grains. This paper presents a study using electron microprobe analysis, microscopy and transport property measurements on the processing and the distribution of Zn2+ in Zn-YBCO so as to understand as well as optimize the processing conditions, doping level, Tc, flux pinning behaviour and field trapping properties of these materials. These results were correlated with the solidification mechanisms of YBCO as well as the size of weak superconducting regions induced by Zn2+.

AB - The incorporation of certain cations such as Zn2+ onto the ab-planes of the YBa2Cu3O7-δ (123) lattice is known to have effects on the superconducting critical transition temperature. On manipulating the distance between the dopant sites, isolated weak superconducting regions with dimensions comparable to the coherence length of YBCO can be introduced into melt textured large YBCO grains. This paper presents a study using electron microprobe analysis, microscopy and transport property measurements on the processing and the distribution of Zn2+ in Zn-YBCO so as to understand as well as optimize the processing conditions, doping level, Tc, flux pinning behaviour and field trapping properties of these materials. These results were correlated with the solidification mechanisms of YBCO as well as the size of weak superconducting regions induced by Zn2+.

KW - Melt texturing

KW - Transport properties

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KW - Zn-doping

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