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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/1099

Title: The second magnetization peak and the peak effect phenomenon in the superconductor Ca3Rh4Sn13
Authors: SARKAR, S
PAULOSE, PL
RAMAKRISHNAN, S
GROVER, AK
TOMY, CV
BALAKRISHNAN, G
PAUL, DMCK
Keywords: calcium alloys
magnetic hysteresis
magnetization
thermal effects
Issue Date: 2001
Publisher: Elsevier
Citation: Physica C: Superconductivity 356(3), 181-191
Abstract: We report on the observation of the anomalous second magnetization peak (SMP) and the peak effect (PE) in juxtaposition to each other in the isothermal magnetization hysteresis loops at T ≤ 4 K in a weakly pinned single crystal of an isotropic superconductor Ca3Rh4Sn13 (Tc≈8.2 K). The position of the SMP does not display any temperature variation, whereas the PE appearing at the edge of the irreversibility line progressively moves towards lower fields as temperature increases. At T≈5 K, the PE nearly swamps the SMP, and above this temperature only the PE can be observed. If the SMP and the PE can be construed as representing changes in the spatial order of the flux line lattice (FLL), the apparent merger of loci of the peak fields of the SMP and the PE in the neighborhood of H≈15 kOe at a reduced temperature t [=T/Tc(0)] of about 0.6 could imply the existence of a multi-critical point.
URI: http://dx.doi.org/10.1016/S0921-4534(01)00152-6
http://hdl.handle.net/10054/1099
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1099
ISSN: 0921-4534
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