We have studied the remanent magnetic flux distribution in bulk melt-textured YBa 2 Cu 3 O 7-δ (YBCO) crystals after their magnetization in quasi-static and pulsed magnetic fields up to 6 T. It has been shown that, provided the magnetic pulse is sharp enough and its amplitude greatly exceeds twice the penetration magnetic field, the pulse magnetization technique becomes extremely sensitive to sample inhomogeneities. Using this method with appropriate parameters of the magnetic pulse, we have demonstrated, in particular, that the growth of YBCO crystals in the growth sectors respond to a macroscopic arrangement of weak links.
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Surzhenko et al. (2001) studied this question.
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