Magnetic Investigations on Ni-Mn-Sn Ferromagnetic Shape Memory Alloy

Abstract:

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Ferromagnetic shape memory alloy of nominal composition Ni50Mn35Sn15 has been investigated by magnetic and transport measurements. Clear signature of first order martensitic transition is observed over a region around 180 K in resistivity, dc magnetization and ac susceptibility data. Field-cooled and zero-field-cooled magnetizations diverge below the martensitic transition, signifying magneto-thermal irreversibility originating from pinning by variants. The sample shows large negative magneto-resistance (-25% at 90 kOe) in the region of martensitic transition, which was found to be highly irreversible. A clear correspondence between magnetoresistance and dc magnetization is observed above the field of technical saturation.

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Periodical:

Edited by:

Lluis Mañosa, P.K. Mukhopadhyay and S.R. Barman

Pages:

215-220

DOI:

10.4028/www.scientific.net/AMR.52.215

Citation:

S. Chatterjee et al., "Magnetic Investigations on Ni-Mn-Sn Ferromagnetic Shape Memory Alloy", Advanced Materials Research, Vol. 52, pp. 215-220, 2008

Online since:

June 2008

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$35.00

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