Samal, D. and Kundu, R. and Dalai, M. K. and Sekhar, B. R. and Kumar, P. S. Anil (2012) Time evolution of resistance in response to magnetic field: Evidence of glassy transport in La0.85Sr0.15CoO3. physica status solidi (b), 249 (11). pp. 2190-2193. ISSN 0370-1972

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Abstract

We demonstrate the distinct glassy transport phenomena associated with the phase separated and spin-glass-like phases of La0.85Sr0.15CoO3, prepared under different heat-treatment conditions. The low-temperature annealed (phase-separated) sample, exhibits a small change in resistance, with evolution of time, as compared to the high-temperature annealed (spin glass) one. However, the resistance change as a function of time, in both cases, is well described by a stretched exponential fit, signifying the slow dynamics. Moreover, the ultraviolet spectroscopy study evidences a relatively higher density of states in the vicinity of EF for low-temperature annealed sample and this correctly points to its less semiconducting behavior.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s Wiley-VCH Verlag
Subjects:	Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 10:43
Last Modified:	19 Aug 2026 10:43
URI:	https://npl.csircentral.net/id/eprint/3355

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