Abstract
We present systematic field-cooled magnetization measurements in four directionally solidified samples of YBCO containing different amounts of Y211 precipitates. Fields up to 50 kOe were applied either parallel or perpendicular to the Cu–O 2 atomic planes. At high applied magnetic fields, the paramagnetic Meissner effect (PME) was observed in all of the studied samples, regardless of the field orientation with respect to the crystalline axes. This high-field PME shows some noticeable differences when compared to the most frequently investigated PME at low applied fields. Our results suggest that pinning by Y211 particles is important for explaining the high-field PME of melt-processed YBCO.
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