Field induced flux pinning in Nd1+xBa2-xCu3O7-δ single crystal

T. Mochida, Masato Murakami

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The flux pinning behavior of a Nd1 + xBa2 - xCu3O7 - δ (Nd123) single crystal, which exhibited a peak effect, has been studied by monitoring the time decay of the magnetic moment. The apparent pinning energy (U0*) was deduced from flux creep data on the basis of the Anderson-Kim model. The magnetic field dependence of U0* showed maxima at peak fields which depended on the temperatures, in a similar manner to those of critical current densities. In addition, the temperature dependence of U0* showed several features. To explain the increase in U0* with the field as well as its temperature and field dependence, we made a numerical calculation by introducing an additional pinning energy which increased with increasing field. The results are in good agreement with the experimental data, especially at temperatures above 60 K, where the contribution of field induced pinning centers is believed to be dominant.

Original languageEnglish
Pages (from-to)311-316
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume290
Issue number3-4
Publication statusPublished - 1997 Nov 1
Externally publishedYes

Fingerprint

Flux pinning
flux pinning
Single crystals
single crystals
temperature dependence
Magnetic moments
Temperature
critical current
Creep
Temperature distribution
temperature distribution
magnetic moments
Magnetic fields
current density
Fluxes
temperature
energy
Monitoring
decay
magnetic fields

Keywords

  • Fishtail effect
  • Flux creep
  • Flux pinning

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Field induced flux pinning in Nd1+xBa2-xCu3O7-δ single crystal. / Mochida, T.; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 290, No. 3-4, 01.11.1997, p. 311-316.

Research output: Contribution to journalArticle

@article{61c8d61593a24a31965b7544a24b952d,
title = "Field induced flux pinning in Nd1+xBa2-xCu3O7-δ single crystal",
abstract = "The flux pinning behavior of a Nd1 + xBa2 - xCu3O7 - δ (Nd123) single crystal, which exhibited a peak effect, has been studied by monitoring the time decay of the magnetic moment. The apparent pinning energy (U0*) was deduced from flux creep data on the basis of the Anderson-Kim model. The magnetic field dependence of U0* showed maxima at peak fields which depended on the temperatures, in a similar manner to those of critical current densities. In addition, the temperature dependence of U0* showed several features. To explain the increase in U0* with the field as well as its temperature and field dependence, we made a numerical calculation by introducing an additional pinning energy which increased with increasing field. The results are in good agreement with the experimental data, especially at temperatures above 60 K, where the contribution of field induced pinning centers is believed to be dominant.",
keywords = "Fishtail effect, Flux creep, Flux pinning",
author = "T. Mochida and Masato Murakami",
year = "1997",
month = "11",
day = "1",
language = "English",
volume = "290",
pages = "311--316",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "3-4",

}

TY - JOUR

T1 - Field induced flux pinning in Nd1+xBa2-xCu3O7-δ single crystal

AU - Mochida, T.

AU - Murakami, Masato

PY - 1997/11/1

Y1 - 1997/11/1

N2 - The flux pinning behavior of a Nd1 + xBa2 - xCu3O7 - δ (Nd123) single crystal, which exhibited a peak effect, has been studied by monitoring the time decay of the magnetic moment. The apparent pinning energy (U0*) was deduced from flux creep data on the basis of the Anderson-Kim model. The magnetic field dependence of U0* showed maxima at peak fields which depended on the temperatures, in a similar manner to those of critical current densities. In addition, the temperature dependence of U0* showed several features. To explain the increase in U0* with the field as well as its temperature and field dependence, we made a numerical calculation by introducing an additional pinning energy which increased with increasing field. The results are in good agreement with the experimental data, especially at temperatures above 60 K, where the contribution of field induced pinning centers is believed to be dominant.

AB - The flux pinning behavior of a Nd1 + xBa2 - xCu3O7 - δ (Nd123) single crystal, which exhibited a peak effect, has been studied by monitoring the time decay of the magnetic moment. The apparent pinning energy (U0*) was deduced from flux creep data on the basis of the Anderson-Kim model. The magnetic field dependence of U0* showed maxima at peak fields which depended on the temperatures, in a similar manner to those of critical current densities. In addition, the temperature dependence of U0* showed several features. To explain the increase in U0* with the field as well as its temperature and field dependence, we made a numerical calculation by introducing an additional pinning energy which increased with increasing field. The results are in good agreement with the experimental data, especially at temperatures above 60 K, where the contribution of field induced pinning centers is believed to be dominant.

KW - Fishtail effect

KW - Flux creep

KW - Flux pinning

UR - http://www.scopus.com/inward/record.url?scp=0031276512&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031276512&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031276512

VL - 290

SP - 311

EP - 316

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 3-4

ER -