Articles written in Pramana – Journal of Physics
Volume 58 Issue 5-6 May 2002 pp 975-978 Physics Of Vortex State
Peak effect studies in single crystals CeRu2 and 2H-NbS2
AA Tulapurkar AK Grover S Ramakrishnan A Niazi AK Rastogi
We have studied the peak effect (PE) phenomenon in single crystals of weakly pinned superconductors CeRu2 and 2H-NbS2. 2H-NbS2 is iso-structural and iso-electronic to 2H-NbSe2, whose similarity with CeRu2 as regards the PE representing the order-to-disorder transformation of the flux line lattice was claimed some time ago. We report on the step change in equilibrium magnetization across the peak effect in CeRu2. We also present the vortex phase diagram of 2H-NbS2 obtained from the magnetization data, and compare the PE phenomenon in 2H-NbS2 and 2H-NbSe2.
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