Large fishtail effect in DyBa2Cu3O7-δ single crystals containing columnar defects

Michael Rudolf Koblischka, A. J.J. van Dalen, Th Schuster, M. Leghissa, M. Jirsa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Using capacitance torque magnetometry, hysteresis loops were measured on a Pb-ion irradiated DyBa2Cu3O7-δ single crystal as a function of magnetic field, temperature and angle Θ between the field direction and the c axis of the sample. The superconducting current densities, jc (T, B, Θ), determined using the extended Bean model, show a clear fishtail effect at temperatures above 30 K despite the large enhancement of jc due to the columnar tracks. The enhancement of jc due to irradiation was magneto-optically determined to jc(φt)/jc(0) = 10 at T = 30 K. The pinning energy U0 is, however, only slightly increased by the irradiation. Our measurements indicate clearly that the fishtail effect is a general feature of the high-Tc superconductors and not related to a special arrangement of pinning centres.

Original languageEnglish
Pages (from-to)2839-2840
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume235-240
Issue numberPART 5
DOIs
Publication statusPublished - 1994 Jan 1
Externally publishedYes

Fingerprint

Irradiation
Single crystals
Defects
irradiation
augmentation
single crystals
defects
Hysteresis loops
Superconducting materials
magnetic measurement
torque
Current density
Capacitance
Torque
capacitance
hysteresis
Ions
Magnetic fields
current density
Temperature

ASJC Scopus subject areas

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

Cite this

Large fishtail effect in DyBa2Cu3O7-δ single crystals containing columnar defects. / Koblischka, Michael Rudolf; van Dalen, A. J.J.; Schuster, Th; Leghissa, M.; Jirsa, M.

In: Physica C: Superconductivity and its Applications, Vol. 235-240, No. PART 5, 01.01.1994, p. 2839-2840.

Research output: Contribution to journalArticle

Koblischka, Michael Rudolf ; van Dalen, A. J.J. ; Schuster, Th ; Leghissa, M. ; Jirsa, M. / Large fishtail effect in DyBa2Cu3O7-δ single crystals containing columnar defects. In: Physica C: Superconductivity and its Applications. 1994 ; Vol. 235-240, No. PART 5. pp. 2839-2840.
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