The Low-Field Ac Impedance of YBa_2Cu_3O_{7-δ} Superconducting Slab

• Authors: P. Aleksyeyev , E. Reusenblatt
• Languages of publication: EN

Abstracts

EN

Using results of surface impedance measurements, the penetration of ac field into a melt-textured YBa_2Cu_3 O_{7-δ} slab was investigated. We obtained a linear correlation between the surface impedance and ac frequency. The impedance curve shifts towards higher temperatures - 0.9 K per decade of the frequency increase, for dc magnetic fieldμ_0H_{dc}≤8×10^{-3} T. This is an evidence of thermally activated flux creep. A plateau in the temperature dependence of the real impedance part was observed at approximately 88 K.

Keywords

EN

74.25.Qt; 74.70.Ad

Discipline

• 74.70.Ad: Metals; alloys and binary compounds (including A15, MgB2, etc.)

• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 1
• Pages: 99-104

Dates

published

2007-01

received

2006-09-04

Contributors

author

P. Aleksyeyev

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
• Donetsk Physico-Technical Institute, Ukrainian Academy of Sciences, 72 R. Luxemburg str., 83114, Donetsk, Ukraine

author

E. Reusenblatt

• Donetsk Physico-Technical Institute, Ukrainian Academy of Sciences, 72 R. Luxemburg str., 83114, Donetsk, Ukraine

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Identifiers

DOI

10.12693/APhysPolA.111.99