The modulation of the peak effect in melt-processed (Sm-Eu)123 superconductors with compositional fluctuations

A. Hu, H. Zhou, D. X. Huang, N. Chikumoto, Naomichi Sakai, Masato Murakami

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The peak effect in magnetization loops of melt-processed (SmxEu1-x)Ba2Cu3O7-δ superconductors is manipulated by varying the Sm/Eu ratio in the initial composition. In all the samples the peak field BP(T), at which the magnetization moment reaches the maximum, was linearly temperature dependent. The fitting to such a relationship unveils a slightly lower critical temperature Tcp than the bulk Tc at zero field. A kink appears in the reversible magnetization moment of the field dependence of superconducting transition. This kink temperature Tck(B) is also a linear function of applied field. Transmission electron microscopy (TEM) observation confirms the presence of nano-scale regular compositional modulation arising from local RE-Ba substitution, which is weakened with increasing Eu concentration. The peak effect is thus attributed to the scattering of local Tc due to compositional fluctuation.

Original languageEnglish
Pages (from-to)3755-3758
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2 III
DOIs
Publication statusPublished - 2003 Jun
Externally publishedYes

Fingerprint

Superconducting materials
Magnetization
Modulation
modulation
magnetization
moments
Temperature
critical temperature
Substitution reactions
Scattering
substitutes
Transmission electron microscopy
transmission electron microscopy
temperature
Chemical analysis
scattering

Keywords

  • (Sm-Eu)123
  • Compositional fluctuation
  • Melt-processed material
  • Peak effect

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

The modulation of the peak effect in melt-processed (Sm-Eu)123 superconductors with compositional fluctuations. / Hu, A.; Zhou, H.; Huang, D. X.; Chikumoto, N.; Sakai, Naomichi; Murakami, Masato.

In: IEEE Transactions on Applied Superconductivity, Vol. 13, No. 2 III, 06.2003, p. 3755-3758.

Research output: Contribution to journalArticle

@article{eb26ce58c6f94c5a91fb5e0f403105d4,
title = "The modulation of the peak effect in melt-processed (Sm-Eu)123 superconductors with compositional fluctuations",
abstract = "The peak effect in magnetization loops of melt-processed (SmxEu1-x)Ba2Cu3O7-δ superconductors is manipulated by varying the Sm/Eu ratio in the initial composition. In all the samples the peak field BP(T), at which the magnetization moment reaches the maximum, was linearly temperature dependent. The fitting to such a relationship unveils a slightly lower critical temperature Tcp than the bulk Tc at zero field. A kink appears in the reversible magnetization moment of the field dependence of superconducting transition. This kink temperature Tck(B) is also a linear function of applied field. Transmission electron microscopy (TEM) observation confirms the presence of nano-scale regular compositional modulation arising from local RE-Ba substitution, which is weakened with increasing Eu concentration. The peak effect is thus attributed to the scattering of local Tc due to compositional fluctuation.",
keywords = "(Sm-Eu)123, Compositional fluctuation, Melt-processed material, Peak effect",
author = "A. Hu and H. Zhou and Huang, {D. X.} and N. Chikumoto and Naomichi Sakai and Masato Murakami",
year = "2003",
month = "6",
doi = "10.1109/TASC.2003.812540",
language = "English",
volume = "13",
pages = "3755--3758",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "2 III",

}

TY - JOUR

T1 - The modulation of the peak effect in melt-processed (Sm-Eu)123 superconductors with compositional fluctuations

AU - Hu, A.

AU - Zhou, H.

AU - Huang, D. X.

AU - Chikumoto, N.

AU - Sakai, Naomichi

AU - Murakami, Masato

PY - 2003/6

Y1 - 2003/6

N2 - The peak effect in magnetization loops of melt-processed (SmxEu1-x)Ba2Cu3O7-δ superconductors is manipulated by varying the Sm/Eu ratio in the initial composition. In all the samples the peak field BP(T), at which the magnetization moment reaches the maximum, was linearly temperature dependent. The fitting to such a relationship unveils a slightly lower critical temperature Tcp than the bulk Tc at zero field. A kink appears in the reversible magnetization moment of the field dependence of superconducting transition. This kink temperature Tck(B) is also a linear function of applied field. Transmission electron microscopy (TEM) observation confirms the presence of nano-scale regular compositional modulation arising from local RE-Ba substitution, which is weakened with increasing Eu concentration. The peak effect is thus attributed to the scattering of local Tc due to compositional fluctuation.

AB - The peak effect in magnetization loops of melt-processed (SmxEu1-x)Ba2Cu3O7-δ superconductors is manipulated by varying the Sm/Eu ratio in the initial composition. In all the samples the peak field BP(T), at which the magnetization moment reaches the maximum, was linearly temperature dependent. The fitting to such a relationship unveils a slightly lower critical temperature Tcp than the bulk Tc at zero field. A kink appears in the reversible magnetization moment of the field dependence of superconducting transition. This kink temperature Tck(B) is also a linear function of applied field. Transmission electron microscopy (TEM) observation confirms the presence of nano-scale regular compositional modulation arising from local RE-Ba substitution, which is weakened with increasing Eu concentration. The peak effect is thus attributed to the scattering of local Tc due to compositional fluctuation.

KW - (Sm-Eu)123

KW - Compositional fluctuation

KW - Melt-processed material

KW - Peak effect

UR - http://www.scopus.com/inward/record.url?scp=0042466327&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0042466327&partnerID=8YFLogxK

U2 - 10.1109/TASC.2003.812540

DO - 10.1109/TASC.2003.812540

M3 - Article

VL - 13

SP - 3755

EP - 3758

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 2 III

ER -