Magnetic relaxation measurements on a series of Y1−xPrxBa2Cu3O7− x=0.13, 0.34, and 0.47 single crystals were performed over a large field and temperature range in order to investigate the characteristics of the vortex matter across the second magnetization peak SMP . The magnitude of the SMP varies nonmonotonically with Pr concentration, i.e., the irreversible magnetization normalized by its va...
