R. Vovk

collaborators

2 papers

cond-mat.supr-con2009

Evolution of Fishtail-effect with aging in pure and Ag-doped MG-YBCO

D. A. Lotnyk, R. V. Vovk, M. A. Obolenskii +6

$M (B)$ -curves were experimentally investigated. Fishtail-effect (FE) was observed in MG YBa $_{2}$ Cu $_{3}$ O $_{7 - δ}$ and YBa $_{2}$ Cu $_{3 - x}$ Ag $_{x}$ O $_{7 - δ}$ (at $x \approx$ 0.02) crystals i…

cond-mat.supr-con2008

Quasi-static and dynamic order-disorder transition in presence of strong pinning

A. V. Bondarenko, A. A. Zavgorodniy, D. A. Lotnik +3

We present the results of an experimental study of vortex dynamics in non-twinned $Y B a_{2} C u_{3} O_{6, 87}$ crystal. It is found that critical currents $J_{c}$ and $J_{c, d y n}$ , which corre…