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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6384

Title: Anisotropy in the vortex phase diagram and the pinning force density in the basal plane of YNi(2)B(2)C
Authors: DAS, P
TOMY, CV
TAKEYA, H
RAMAKRISHNAN, S
GROVER, AK
Keywords: flux-line-lattice
matter
superconductors
transition
2h-nbse2
luni2b2c
Issue Date: 2009
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[110] 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
URI: http://dx.doi.org/10.1016/j.physc.2009.01.004
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6384
http://hdl.handle.net/10054/6384
ISSN: 0921-4534
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