Cooperative behavior of the random and correlated pinning in Er123 films with columnar defects

Satoshi Awaji; Masafumi Namba; Kazuo Watanabe; Shun Ito; Eiji Aoyagi; Hideki Kai; Masashi Mukaida; Satoru Okayasu

doi:10.1109/TASC.2010.2089588

Cooperative behavior of the random and correlated pinning in Er123 films with columnar defects

Satoshi Awaji, Masafumi Namba, Kazuo Watanabe, Shun Ito, Eiji Aoyagi, Hideki Kai, Masashi Mukaida, Satoru Okayasu

IMR - High Field Laboratory for Superconducting Materials

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

6 Citations (Scopus)

Abstract

The flux pinning behaviors for the heavy ion irradiated Er123 films are investigated based on the detailed J_c(B,T,θ) properties. The double peaks of F_p curves for B // c appear in case of the matching field of 0.3 T along c-axis and 1.7 T tilted from c-axis. In addition, the peaks on J_c (θ) at θ = 0° (B // c) , which originate from the columnar defects, decrease with increasing magnetic field but increase again near the irreversibility field.We found that the cooperation model of the c-axis correlated and random pinning centers can describe the observed double peak behavior of F_p(B) and the angular dependence of J_c related to the correlated pinning.

Original language	English
Article number	5634063
Pages (from-to)	3192-3195
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	21
Issue number	3 PART 3
DOIs	https://doi.org/10.1109/TASC.2010.2089588
Publication status	Published - 2011 Jun

Keywords

Columnar defect
Critical current density
Flux pinning
High-temperature superconducting film

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10.1109/TASC.2010.2089588

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title = "Cooperative behavior of the random and correlated pinning in Er123 films with columnar defects",

abstract = "The flux pinning behaviors for the heavy ion irradiated Er123 films are investigated based on the detailed Jc(B,T,θ) properties. The double peaks of Fp curves for B // c appear in case of the matching field of 0.3 T along c-axis and 1.7 T tilted from c-axis. In addition, the peaks on Jc (θ) at θ = 0° (B // c) , which originate from the columnar defects, decrease with increasing magnetic field but increase again near the irreversibility field.We found that the cooperation model of the c-axis correlated and random pinning centers can describe the observed double peak behavior of Fp(B) and the angular dependence of Jc related to the correlated pinning.",

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T1 - Cooperative behavior of the random and correlated pinning in Er123 films with columnar defects

AU - Awaji, Satoshi

AU - Namba, Masafumi

AU - Watanabe, Kazuo

AU - Ito, Shun

AU - Aoyagi, Eiji

AU - Kai, Hideki

AU - Mukaida, Masashi

AU - Okayasu, Satoru

PY - 2011/6

Y1 - 2011/6

N2 - The flux pinning behaviors for the heavy ion irradiated Er123 films are investigated based on the detailed Jc(B,T,θ) properties. The double peaks of Fp curves for B // c appear in case of the matching field of 0.3 T along c-axis and 1.7 T tilted from c-axis. In addition, the peaks on Jc (θ) at θ = 0° (B // c) , which originate from the columnar defects, decrease with increasing magnetic field but increase again near the irreversibility field.We found that the cooperation model of the c-axis correlated and random pinning centers can describe the observed double peak behavior of Fp(B) and the angular dependence of Jc related to the correlated pinning.

AB - The flux pinning behaviors for the heavy ion irradiated Er123 films are investigated based on the detailed Jc(B,T,θ) properties. The double peaks of Fp curves for B // c appear in case of the matching field of 0.3 T along c-axis and 1.7 T tilted from c-axis. In addition, the peaks on Jc (θ) at θ = 0° (B // c) , which originate from the columnar defects, decrease with increasing magnetic field but increase again near the irreversibility field.We found that the cooperation model of the c-axis correlated and random pinning centers can describe the observed double peak behavior of Fp(B) and the angular dependence of Jc related to the correlated pinning.

KW - Columnar defect

KW - Critical current density

KW - Flux pinning

KW - High-temperature superconducting film

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Cooperative behavior of the random and correlated pinning in Er123 films with columnar defects

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Keywords

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