TY - JOUR
T1 - Intermittent Flux Penetration at Different Temperatures in YBa2Cu3O7−x on NdGaO3 Substrates
AU - Qviller, Atle Jorstad
AU - Yurchenko, Vitaliy
AU - Vestgården, Jørn Inge
AU - Johansen, Tom Henning
AU - Galperin, Yuri
AU - Mozhaev, Peter
AU - Mozhaeva, Julia
AU - Hansen, Jørn Bindslev
AU - Jacobsen, Claus Schelde
PY - 2011
Y1 - 2011
N2 - In type-II superconductors, increasing applied magnetic field penetrates gradually in the form of magnetic vortices. It is of great interest to understand the dynamics of magnetic flux in different superconducting materials, as this phenomenon can severely limit the performance of superconductors in applications. YBa2Cu3O7−x (YBCO) is an important high-temperature superconductor, but until recently, it has been hard to make wires from it due to misalignment of superconducting grains. A solution to this problem is to deposit YBCO on vicinal substrates to better align the grains. Some of these samples show a strongly intermittent flux penetration at low temperatures. In this work, we have studied flux penetration in YBCO deposited on a 14° vicinal substrate of NdGaO3 (NGO) at different temperatures.
AB - In type-II superconductors, increasing applied magnetic field penetrates gradually in the form of magnetic vortices. It is of great interest to understand the dynamics of magnetic flux in different superconducting materials, as this phenomenon can severely limit the performance of superconductors in applications. YBa2Cu3O7−x (YBCO) is an important high-temperature superconductor, but until recently, it has been hard to make wires from it due to misalignment of superconducting grains. A solution to this problem is to deposit YBCO on vicinal substrates to better align the grains. Some of these samples show a strongly intermittent flux penetration at low temperatures. In this work, we have studied flux penetration in YBCO deposited on a 14° vicinal substrate of NdGaO3 (NGO) at different temperatures.
KW - Thermomagnetic instability
KW - Magneto-optical imaging
KW - Flux avalanches
KW - Vicinal substrate
KW - Miscut substrate
U2 - 10.1007/s10948-010-0915-5
DO - 10.1007/s10948-010-0915-5
M3 - Journal article
VL - 24
SP - 179
EP - 181
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
SN - 1557-1939
IS - 1-2
ER -