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Freezing of magnetic domain motion in a reentrant spin glass as seen by elastic measurements

Mukhopadhyay, PK and Raychaudhuri, AK (1992) Freezing of magnetic domain motion in a reentrant spin glass as seen by elastic measurements. In: Solid State Communications, 83 (10). pp. 829-832.

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We report here measurements of elastic modulus of a reentrant spin glass (RSG) across the reentrant transition temperature $(T_{sg})$. By measuring the Young modulus (E) in a magnetic field we obtained the $"\Delta E"$ effect, which is the contribution of the ferromagnetic domains to the E. While a small but finite $"\Delta E"$ effect has been observed in the RSG below the first ferromagnetic transition temperature $(T_c)$, it vanishes for $T < T_{sg}$. In contrast to the RSG, in a ferromagnet the $"\Delta E"$ effect is temperature independent at $T << T_c$ . We explained this observation as arising due to freezing of magnetic domain motion at or below $T_{sg}$ • This experiment in conjunction with previous magnetic experiments show that the observed "reentrant" transition is determined by freezing of domain motion.

Item Type: Journal Article
Publication: Solid State Communications
Publisher: Elsevier
Additional Information: Copyright of this article belongs to Elsevier.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 10 Oct 2006
Last Modified: 19 Sep 2010 04:32
URI: http://eprints.iisc.ac.in/id/eprint/8774

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