Correlation of magnetic and magneto-optical properties with microstructure analysis in melt-textured (Nd0.33Sm0.33Gd0.33)Ba2Cu3Oy

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Abstract

Magnetic properties of the melt-processed ternary superconductor (Nd0.33Sm0.33Gd0.33)Ba2Cu3Oy (`NSG') with non-homogeneously distributed NSG-211 particles were investigated by means of magnetic and magneto-optical measurements. Flux distributions obtained by means of magneto-optic imaging after zero field-cooling and field-cooling were analyzed in order to understand the flux penetration behavior of this compound. The current-carrying length-scale was determined from the reverse leg of the magnetization hysteresis loops and compared to the actual dimensions of the sample. This was done both on the whole sample and on three individual domains to which the sample was subsequently divided. Magnetization hysteresis loops of all samples exhibited a strongly developed secondary peak in the temperature range 30 K≤T≤77 K. The critical current and pinning force densities derived from these data were normalized to the values at the peak position, Jmax and Fmax, respectively, and analyzed as a function of applied field reduced both to the respective peak field and irreversibility field.

Original languageEnglish
Pages (from-to)169-180
Number of pages12
JournalPhysica C: Superconductivity and its Applications
Volume319
Issue number3
DOIs
Publication statusPublished - 1999 Jun 20
Externally publishedYes

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Hysteresis loops
Magnetization
Optical properties
Fluxes
Cooling
optical properties
Magnetooptical effects
microstructure
Microstructure
Critical currents
Superconducting materials
Magnetic properties
hysteresis
cooling
Imaging techniques
magnetization
magneto-optics
optical measurement
critical current
penetration

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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title = "Correlation of magnetic and magneto-optical properties with microstructure analysis in melt-textured (Nd0.33Sm0.33Gd0.33)Ba2Cu3Oy",
abstract = "Magnetic properties of the melt-processed ternary superconductor (Nd0.33Sm0.33Gd0.33)Ba2Cu3Oy (`NSG') with non-homogeneously distributed NSG-211 particles were investigated by means of magnetic and magneto-optical measurements. Flux distributions obtained by means of magneto-optic imaging after zero field-cooling and field-cooling were analyzed in order to understand the flux penetration behavior of this compound. The current-carrying length-scale was determined from the reverse leg of the magnetization hysteresis loops and compared to the actual dimensions of the sample. This was done both on the whole sample and on three individual domains to which the sample was subsequently divided. Magnetization hysteresis loops of all samples exhibited a strongly developed secondary peak in the temperature range 30 K≤T≤77 K. The critical current and pinning force densities derived from these data were normalized to the values at the peak position, Jmax and Fmax, respectively, and analyzed as a function of applied field reduced both to the respective peak field and irreversibility field.",
author = "A. Das and Koblischka, {Michael Rudolf} and M. Jirsa and Muralidhar Miryala and S. Koishikawa and Naomichi Sakai and Masato Murakami",
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AU - Das, A.

AU - Koblischka, Michael Rudolf

AU - Jirsa, M.

AU - Miryala, Muralidhar

AU - Koishikawa, S.

AU - Sakai, Naomichi

AU - Murakami, Masato

PY - 1999/6/20

Y1 - 1999/6/20

N2 - Magnetic properties of the melt-processed ternary superconductor (Nd0.33Sm0.33Gd0.33)Ba2Cu3Oy (`NSG') with non-homogeneously distributed NSG-211 particles were investigated by means of magnetic and magneto-optical measurements. Flux distributions obtained by means of magneto-optic imaging after zero field-cooling and field-cooling were analyzed in order to understand the flux penetration behavior of this compound. The current-carrying length-scale was determined from the reverse leg of the magnetization hysteresis loops and compared to the actual dimensions of the sample. This was done both on the whole sample and on three individual domains to which the sample was subsequently divided. Magnetization hysteresis loops of all samples exhibited a strongly developed secondary peak in the temperature range 30 K≤T≤77 K. The critical current and pinning force densities derived from these data were normalized to the values at the peak position, Jmax and Fmax, respectively, and analyzed as a function of applied field reduced both to the respective peak field and irreversibility field.

AB - Magnetic properties of the melt-processed ternary superconductor (Nd0.33Sm0.33Gd0.33)Ba2Cu3Oy (`NSG') with non-homogeneously distributed NSG-211 particles were investigated by means of magnetic and magneto-optical measurements. Flux distributions obtained by means of magneto-optic imaging after zero field-cooling and field-cooling were analyzed in order to understand the flux penetration behavior of this compound. The current-carrying length-scale was determined from the reverse leg of the magnetization hysteresis loops and compared to the actual dimensions of the sample. This was done both on the whole sample and on three individual domains to which the sample was subsequently divided. Magnetization hysteresis loops of all samples exhibited a strongly developed secondary peak in the temperature range 30 K≤T≤77 K. The critical current and pinning force densities derived from these data were normalized to the values at the peak position, Jmax and Fmax, respectively, and analyzed as a function of applied field reduced both to the respective peak field and irreversibility field.

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