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|Title:||Anisotropy in the vortex phase diagram and the pinning force density in the basal plane of YNi(2)B(2)C|
|Publisher:||ELSEVIER SCIENCE BV|
|Citation:||PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 469(4), 151-156|
|Abstract:||We present the magnetic field dependence of the critical current density from dc magnetization measurements concerning the anisotropic behaviour of flux line lattice (FLL) in a single crystal of MAC The peak effect (PE) phenomenon is observed for all crystallographic orientations, but the second magnetization peak (SMP) anomaly is observed only for H parallel to a. Our study reveals that the FLL obtained when H parallel to is better ordered within the basal plane. However, the FLL for H parallel to c is found to be even more ordered than that for H parallel to[110). The perfect square symmetry of the FLL for H parallel to c is perhaps responsible for promoting the realization of the best spatial order of the FLL prior to the onset of the PE, indicating a correlation between the crystalline lattice and the vortex lattice. We have also found a change over in the power law governing the decay of the critical current density which is identified as a crossover from weak to weaker pinning regime in the phase diagram. (C) 2009|
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