Flux pinning properties of NdBa2Cu3O7-d single crystals flux-grown in low oxygen partial pressures

Takamitsu Higuchi, Sang Im Yoo, Koichiro Waki, Hiroyuki Fujimoto, Masato Murakami

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Flux pinning properties were studied for NdBa2Cu3O7-d (Nd123)single crystals flux-grown in low oxygen partial pressures. In the high temperature (T) region roughly above 70 K, apparent fishtail peaks were commonly observed on the magnetization hysteresis (M-H) curves or the critical current density vs magnetic field (Jc-B curves). For this high T region, while Jc(B,T) curves in low B followed an empirical equation from Matsushita et al. [1], those in high B obviously deviated from the equation, however, those could be well scaled to a single curve by plotting the normalized flux pinning force density fp vs the reduced B/Birr, where Birr is the irreversibility field, indicating that dominant pinning mechanisms are different between low and high B region.

Original languageEnglish
Pages (from-to)2137-2138
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume282
Issue numberPART 4
Publication statusPublished - 1997 Aug
Externally publishedYes

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Flux pinning
flux pinning
Partial pressure
partial pressure
Single crystals
Oxygen
Fluxes
single crystals
oxygen
curves
Hysteresis
Magnetization
Magnetic fields
plotting
critical current
hysteresis
current density
Temperature
magnetization
magnetic fields

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Flux pinning properties of NdBa2Cu3O7-d single crystals flux-grown in low oxygen partial pressures. / Higuchi, Takamitsu; Yoo, Sang Im; Waki, Koichiro; Fujimoto, Hiroyuki; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 282, No. PART 4, 08.1997, p. 2137-2138.

Research output: Contribution to journalArticle

Higuchi, Takamitsu ; Yoo, Sang Im ; Waki, Koichiro ; Fujimoto, Hiroyuki ; Murakami, Masato. / Flux pinning properties of NdBa2Cu3O7-d single crystals flux-grown in low oxygen partial pressures. In: Physica C: Superconductivity and its Applications. 1997 ; Vol. 282, No. PART 4. pp. 2137-2138.
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