Effect of Fe on the Martensitic Transition, Magnetic and Magnetocaloric Properties in Ni-Mn-In Melt-spun Ribbons.

Authors :: Raj kumar, D. M.
Rama Rao, N. V.
Esakki Muthu, S.
Arumugam, S.
Manivel Raja, M.
Suresh, K. G.
Source :: Defence Science Journal; Jul/Aug2016, Vol. 66 Issue 4, p403-412, 10p
Publication Year :: 2016
Abstract: The effect of Fe on the martensitic transitions, magnetic and inverse magnetocaloric effect in Ni<subscript>47</subscript>Mn<subscript>40-x</subscript>Fe<subscript>x</subscript>In<subscript>13</subscript> ribbons (x = 1, 2, 3, and 5) has been investigated. All the ribbon compositions under study have shown the presence of austenite phase at room temperature. The variation of martensitic transition with the increase in Fe-content is non-monotonic. The thermal hysteresis of the martensitic transition increased with the increase in Fe-content. The martensitic transitions shifted to lower temperatures in the presence of high magnetic fields. A maximum magnetic entropy change (ΔS<subscript>M</subscript>) of 50 Jkg<superscript>-1</superscript>K<superscript>-1</superscript> has been achieved in the Ni<subscript>47</subscript>Mn<subscript>38</subscript>Fe<subscript>2</subscript>In<subscript>13</subscript> (x = 1) ribbon at 282 K for an applied field of 5 T. [ABSTRACT FROM AUTHOR]

Subjects :: MARTENSITIC transformations
MARTENSITIC structure
MAGNETOCALORIC effects
MAGNETIC entropy
HYSTERESIS loop

Full Text Access

Tools