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

研究成果: Article

4 引用 (Scopus)

抄録

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.

元の言語English
ページ(範囲)3755-3758
ページ数4
ジャーナルIEEE Transactions on Applied Superconductivity
13
発行部数2 III
DOI
出版物ステータスPublished - 2003 6
外部発表Yes

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

ASJC Scopus subject areas

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

これを引用

@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

AN - SCOPUS:0042466327

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 -