Scaling of pinning forces in NdBa2Cu3O7-δ superconductors

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The scaling of the volume pinning forces, Fp=jc×Ba, is performed versus the reduced fields bf = Ba/Bfp (where Ba is the applied field, and Bfp denotes the peak position of Fp.max) and h = Ha/Hirr (where Hirr denotes the irreversibility field) for two different NdBa2Cu3O7-δ superconductors, a single crystal and a melt-processed sample. In both cases, an excellent natural scaling is found to hold. Based on these good scaling results, we extend the scaling analysis towards lower temperatures. There, the scaling parameters are no longer directly accessible within our experimental field range, but can be deduced from the Fp(Ba) curves normalized using fitting values of Bfp and Fp.max so that these overlap with the high temperature curves. It is shown that such a procedure allows to obtain reasonably good estimates of Fp.max and Hirr, which leads in turn to an estimation of the irreversibility line well down to 0 temperature. At low temperatures, deviations from the analytical dependencies appear which are due to interference with the central and intermediate peak in the magnetization loops. The shape of the irreversibility line is discussed.

Original languageEnglish
Pages (from-to)3241-3246
Number of pages6
JournalJournal of Applied Physics
Volume85
Issue number6
Publication statusPublished - 1999 Mar 15
Externally publishedYes

Fingerprint

scaling
curves
deviation
interference
magnetization
single crystals
estimates
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Scaling of pinning forces in NdBa2Cu3O7-δ superconductors. / Koblischka, Michael Rudolf; Higuchi, T.; Yoo, S. I.; Murakami, Masato.

In: Journal of Applied Physics, Vol. 85, No. 6, 15.03.1999, p. 3241-3246.

Research output: Contribution to journalArticle

@article{a2d0e9f8aef34c2e954c915cc31edfa1,
title = "Scaling of pinning forces in NdBa2Cu3O7-δ superconductors",
abstract = "The scaling of the volume pinning forces, Fp=jc×Ba, is performed versus the reduced fields bf = Ba/Bfp (where Ba is the applied field, and Bfp denotes the peak position of Fp.max) and h = Ha/Hirr (where Hirr denotes the irreversibility field) for two different NdBa2Cu3O7-δ superconductors, a single crystal and a melt-processed sample. In both cases, an excellent natural scaling is found to hold. Based on these good scaling results, we extend the scaling analysis towards lower temperatures. There, the scaling parameters are no longer directly accessible within our experimental field range, but can be deduced from the Fp(Ba) curves normalized using fitting values of Bfp and Fp.max so that these overlap with the high temperature curves. It is shown that such a procedure allows to obtain reasonably good estimates of Fp.max and Hirr, which leads in turn to an estimation of the irreversibility line well down to 0 temperature. At low temperatures, deviations from the analytical dependencies appear which are due to interference with the central and intermediate peak in the magnetization loops. The shape of the irreversibility line is discussed.",
author = "Koblischka, {Michael Rudolf} and T. Higuchi and Yoo, {S. I.} and Masato Murakami",
year = "1999",
month = "3",
day = "15",
language = "English",
volume = "85",
pages = "3241--3246",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "6",

}

TY - JOUR

T1 - Scaling of pinning forces in NdBa2Cu3O7-δ superconductors

AU - Koblischka, Michael Rudolf

AU - Higuchi, T.

AU - Yoo, S. I.

AU - Murakami, Masato

PY - 1999/3/15

Y1 - 1999/3/15

N2 - The scaling of the volume pinning forces, Fp=jc×Ba, is performed versus the reduced fields bf = Ba/Bfp (where Ba is the applied field, and Bfp denotes the peak position of Fp.max) and h = Ha/Hirr (where Hirr denotes the irreversibility field) for two different NdBa2Cu3O7-δ superconductors, a single crystal and a melt-processed sample. In both cases, an excellent natural scaling is found to hold. Based on these good scaling results, we extend the scaling analysis towards lower temperatures. There, the scaling parameters are no longer directly accessible within our experimental field range, but can be deduced from the Fp(Ba) curves normalized using fitting values of Bfp and Fp.max so that these overlap with the high temperature curves. It is shown that such a procedure allows to obtain reasonably good estimates of Fp.max and Hirr, which leads in turn to an estimation of the irreversibility line well down to 0 temperature. At low temperatures, deviations from the analytical dependencies appear which are due to interference with the central and intermediate peak in the magnetization loops. The shape of the irreversibility line is discussed.

AB - The scaling of the volume pinning forces, Fp=jc×Ba, is performed versus the reduced fields bf = Ba/Bfp (where Ba is the applied field, and Bfp denotes the peak position of Fp.max) and h = Ha/Hirr (where Hirr denotes the irreversibility field) for two different NdBa2Cu3O7-δ superconductors, a single crystal and a melt-processed sample. In both cases, an excellent natural scaling is found to hold. Based on these good scaling results, we extend the scaling analysis towards lower temperatures. There, the scaling parameters are no longer directly accessible within our experimental field range, but can be deduced from the Fp(Ba) curves normalized using fitting values of Bfp and Fp.max so that these overlap with the high temperature curves. It is shown that such a procedure allows to obtain reasonably good estimates of Fp.max and Hirr, which leads in turn to an estimation of the irreversibility line well down to 0 temperature. At low temperatures, deviations from the analytical dependencies appear which are due to interference with the central and intermediate peak in the magnetization loops. The shape of the irreversibility line is discussed.

UR - http://www.scopus.com/inward/record.url?scp=0001070774&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001070774&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001070774

VL - 85

SP - 3241

EP - 3246

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 6

ER -