Effect of nano-scale additions on the enhancement of superconductivity in Y-Ba-Cu-O materials

Shih Yun Chen, In-Gann Chen, Ping Chi Hsieh, Maw Kuen Wu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The coherence length of Y-Ba-Cu-O superconductor is in the nano-meter range, therefore, nano-scale additions can be used to increase the number of effective pinning centers in top-seed melt-growth (TSMG) Y-Ba-Cu-O single grain materials. Different kinds of nano-scale additions: Y2O3, and Y2BaCuO5 (Y211) were mixed with precursor powders (YBa2Cu3O7 + Y2BaCuO) followed by TSMG process in air. SEM and TEM were used to investigate the size and morphology of the 211-particles as well as the distribution of defects (e.g. dislocations) in the matrix. It was found that the size of 211-particles was slightly reduced in nm Y2O3 doped samples, and sub-micro 211-particles were observed in nmY211 doped samples. In addition, the critical temperature, T c, for all samples was similar and independent of the type of addition, while the enhancement of critical current density, J c(H, T), varied with the types of nano-scale addition. Accordingly, the reactions between the superconductive matrix and different nano-scale additions resulted in different pinning properties. These samples with different nano-scale additions were studied using scaling rule analysis to differentiate their pinning mechanisms. For comparison, the results of SmBCO samples with nano-scale additions are also discussed in this study.

Original languageEnglish
Pages (from-to)857-863
Number of pages7
JournalJournal of Electroceramics
Volume13
Issue number1-3
DOIs
Publication statusPublished - 2004 Jul 1

Fingerprint

Superconductivity
Seed
superconductivity
augmentation
Powders
Superconducting materials
Transmission electron microscopy
Defects
Scanning electron microscopy
Air
seeds
YBCO superconductors
Temperature
matrices
critical current
critical temperature
current density
scaling
transmission electron microscopy
scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Chen, Shih Yun ; Chen, In-Gann ; Hsieh, Ping Chi ; Wu, Maw Kuen. / Effect of nano-scale additions on the enhancement of superconductivity in Y-Ba-Cu-O materials. In: Journal of Electroceramics. 2004 ; Vol. 13, No. 1-3. pp. 857-863.
@article{5cb13f3dddd74f218ec16273edb5853b,
title = "Effect of nano-scale additions on the enhancement of superconductivity in Y-Ba-Cu-O materials",
abstract = "The coherence length of Y-Ba-Cu-O superconductor is in the nano-meter range, therefore, nano-scale additions can be used to increase the number of effective pinning centers in top-seed melt-growth (TSMG) Y-Ba-Cu-O single grain materials. Different kinds of nano-scale additions: Y2O3, and Y2BaCuO5 (Y211) were mixed with precursor powders (YBa2Cu3O7 + Y2BaCuO) followed by TSMG process in air. SEM and TEM were used to investigate the size and morphology of the 211-particles as well as the distribution of defects (e.g. dislocations) in the matrix. It was found that the size of 211-particles was slightly reduced in nm Y2O3 doped samples, and sub-micro 211-particles were observed in nmY211 doped samples. In addition, the critical temperature, T c, for all samples was similar and independent of the type of addition, while the enhancement of critical current density, J c(H, T), varied with the types of nano-scale addition. Accordingly, the reactions between the superconductive matrix and different nano-scale additions resulted in different pinning properties. These samples with different nano-scale additions were studied using scaling rule analysis to differentiate their pinning mechanisms. For comparison, the results of SmBCO samples with nano-scale additions are also discussed in this study.",
author = "Chen, {Shih Yun} and In-Gann Chen and Hsieh, {Ping Chi} and Wu, {Maw Kuen}",
year = "2004",
month = "7",
day = "1",
doi = "10.1007/s10832-004-5204-x",
language = "English",
volume = "13",
pages = "857--863",
journal = "Journal of Electroceramics",
issn = "1385-3449",
publisher = "Springer Netherlands",
number = "1-3",

}

Effect of nano-scale additions on the enhancement of superconductivity in Y-Ba-Cu-O materials. / Chen, Shih Yun; Chen, In-Gann; Hsieh, Ping Chi; Wu, Maw Kuen.

In: Journal of Electroceramics, Vol. 13, No. 1-3, 01.07.2004, p. 857-863.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of nano-scale additions on the enhancement of superconductivity in Y-Ba-Cu-O materials

AU - Chen, Shih Yun

AU - Chen, In-Gann

AU - Hsieh, Ping Chi

AU - Wu, Maw Kuen

PY - 2004/7/1

Y1 - 2004/7/1

N2 - The coherence length of Y-Ba-Cu-O superconductor is in the nano-meter range, therefore, nano-scale additions can be used to increase the number of effective pinning centers in top-seed melt-growth (TSMG) Y-Ba-Cu-O single grain materials. Different kinds of nano-scale additions: Y2O3, and Y2BaCuO5 (Y211) were mixed with precursor powders (YBa2Cu3O7 + Y2BaCuO) followed by TSMG process in air. SEM and TEM were used to investigate the size and morphology of the 211-particles as well as the distribution of defects (e.g. dislocations) in the matrix. It was found that the size of 211-particles was slightly reduced in nm Y2O3 doped samples, and sub-micro 211-particles were observed in nmY211 doped samples. In addition, the critical temperature, T c, for all samples was similar and independent of the type of addition, while the enhancement of critical current density, J c(H, T), varied with the types of nano-scale addition. Accordingly, the reactions between the superconductive matrix and different nano-scale additions resulted in different pinning properties. These samples with different nano-scale additions were studied using scaling rule analysis to differentiate their pinning mechanisms. For comparison, the results of SmBCO samples with nano-scale additions are also discussed in this study.

AB - The coherence length of Y-Ba-Cu-O superconductor is in the nano-meter range, therefore, nano-scale additions can be used to increase the number of effective pinning centers in top-seed melt-growth (TSMG) Y-Ba-Cu-O single grain materials. Different kinds of nano-scale additions: Y2O3, and Y2BaCuO5 (Y211) were mixed with precursor powders (YBa2Cu3O7 + Y2BaCuO) followed by TSMG process in air. SEM and TEM were used to investigate the size and morphology of the 211-particles as well as the distribution of defects (e.g. dislocations) in the matrix. It was found that the size of 211-particles was slightly reduced in nm Y2O3 doped samples, and sub-micro 211-particles were observed in nmY211 doped samples. In addition, the critical temperature, T c, for all samples was similar and independent of the type of addition, while the enhancement of critical current density, J c(H, T), varied with the types of nano-scale addition. Accordingly, the reactions between the superconductive matrix and different nano-scale additions resulted in different pinning properties. These samples with different nano-scale additions were studied using scaling rule analysis to differentiate their pinning mechanisms. For comparison, the results of SmBCO samples with nano-scale additions are also discussed in this study.

UR - http://www.scopus.com/inward/record.url?scp=17144422053&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17144422053&partnerID=8YFLogxK

U2 - 10.1007/s10832-004-5204-x

DO - 10.1007/s10832-004-5204-x

M3 - Article

VL - 13

SP - 857

EP - 863

JO - Journal of Electroceramics

JF - Journal of Electroceramics

SN - 1385-3449

IS - 1-3

ER -