Anomalous behavior of the irreversible magnetization and time relaxation in (formula presented) single crystals with splayed tracks

A. Silhanek, D. Niebieskikwiat, L. Civale

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We have studied the angular dependence of the irreversible magnetization and its time relaxation in (Formula presented) single crystals with one or two families of columnar defects inclined with respect to the c axis. At high magnetic fields, the magnetization shows the usual maximum centered at the mean tracks’ orientation and an associated minimum in the normalized relaxation rate. In contrast, at low fields we observe an anomalous local minimum in the magnetization and a maximum in the relaxation rate. We present a model to explain this anomaly based on the slowing down of the creep processes arising from the increase of the vortex-vortex interactions as the applied field is tilted away from the mean tracks’ direction.

Original languageEnglish
Pages (from-to)13189-13195
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume60
Issue number18
DOIs
StatePublished - 1999
Externally publishedYes

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