On the pinning performance analysis in bulk RE-123 twin-free superconductors

M. Jirsa; P. Petrenko; X. Yao; M. Muralidhar

doi:10.1016/j.physc.2007.02.019

On the pinning performance analysis in bulk RE-123 twin-free superconductors

M. Jirsa, P. Petrenko, X. Yao, M. Muralidhar

Research output: Contribution to journal › Article › peer-review

Abstract

We show that the replacement of B_c2 by the irreversibility field in the classical scaling law for the sake of high-T_c superconductors (HTSCs) magnetic data interpretation is not an ideal solution. Field normalization to the peak position is more exact but it also gives rise to parameter values that are too high to be in any correlation with the original theory. Model of the thermally activated vortex dynamics, based on the super-current scaling and on the logarithmic pinning potential, works equally well but with only one reasonably ranging parameter, directly accessible from experiment. This parameter can thus serve as a classification factor for the pinning efficiency of bulk twin-free HTSCs.

Original language	English
Pages (from-to)	353-356
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	463-465
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/j.physc.2007.02.019
Publication status	Published - 2007 Oct 1
Externally published	Yes

Keywords

Bulk RE-123 superconductors
Peak effect
Pinning classification
Pinning force scaling

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/j.physc.2007.02.019

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title = "On the pinning performance analysis in bulk RE-123 twin-free superconductors",

abstract = "We show that the replacement of Bc2 by the irreversibility field in the classical scaling law for the sake of high-Tc superconductors (HTSCs) magnetic data interpretation is not an ideal solution. Field normalization to the peak position is more exact but it also gives rise to parameter values that are too high to be in any correlation with the original theory. Model of the thermally activated vortex dynamics, based on the super-current scaling and on the logarithmic pinning potential, works equally well but with only one reasonably ranging parameter, directly accessible from experiment. This parameter can thus serve as a classification factor for the pinning efficiency of bulk twin-free HTSCs.",

keywords = "Bulk RE-123 superconductors, Peak effect, Pinning classification, Pinning force scaling",

author = "M. Jirsa and P. Petrenko and X. Yao and M. Muralidhar",

note = "Funding Information: This work was accomplished under the support of MEYS of the Czech Republic (Grant No. 1P05ME728). One of the authors (X. Yao) acknowledges the financial support from the MOST of China, Project No. 2006CB601003, and the SSTC (Grant No. 055207077).",

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doi = "10.1016/j.physc.2007.02.019",

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volume = "463-465",

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T1 - On the pinning performance analysis in bulk RE-123 twin-free superconductors

AU - Jirsa, M.

AU - Petrenko, P.

AU - Yao, X.

AU - Muralidhar, M.

N1 - Funding Information: This work was accomplished under the support of MEYS of the Czech Republic (Grant No. 1P05ME728). One of the authors (X. Yao) acknowledges the financial support from the MOST of China, Project No. 2006CB601003, and the SSTC (Grant No. 055207077).

PY - 2007/10/1

Y1 - 2007/10/1

N2 - We show that the replacement of Bc2 by the irreversibility field in the classical scaling law for the sake of high-Tc superconductors (HTSCs) magnetic data interpretation is not an ideal solution. Field normalization to the peak position is more exact but it also gives rise to parameter values that are too high to be in any correlation with the original theory. Model of the thermally activated vortex dynamics, based on the super-current scaling and on the logarithmic pinning potential, works equally well but with only one reasonably ranging parameter, directly accessible from experiment. This parameter can thus serve as a classification factor for the pinning efficiency of bulk twin-free HTSCs.

AB - We show that the replacement of Bc2 by the irreversibility field in the classical scaling law for the sake of high-Tc superconductors (HTSCs) magnetic data interpretation is not an ideal solution. Field normalization to the peak position is more exact but it also gives rise to parameter values that are too high to be in any correlation with the original theory. Model of the thermally activated vortex dynamics, based on the super-current scaling and on the logarithmic pinning potential, works equally well but with only one reasonably ranging parameter, directly accessible from experiment. This parameter can thus serve as a classification factor for the pinning efficiency of bulk twin-free HTSCs.

KW - Bulk RE-123 superconductors

KW - Peak effect

KW - Pinning classification

KW - Pinning force scaling

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IS - SUPPL.

ER -

On the pinning performance analysis in bulk RE-123 twin-free superconductors

Abstract

Keywords

ASJC Scopus subject areas

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