Abstract
This paper reports the experimental investigations into two different methods of reducing flux creep and magnetic relaxation in high T c YBa 2Cu 3O 7 and low T c NbTi. For temperatures T ≤ 4.2 K temperature reduction leads to a considerable reduction of the flux creep rate. The second method for reducing relaxation is the choice of appropriate magnetic field cycling prior to measurements being taken. As already found for YBa 2Cu 3O 7, NbTi also shows a strong dependence on magnetic history. These results are of interest for various practical applications.
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