Panda, A K and Ghosh, M and Kumar, Arvind and Mitra, A (2008) Magnetic transitions and structure of a NiMnGa ferromagnetic shape memory alloy prepared by melt spinning technique. Journal of Magnetism and Magnetic Materials, 320 (17). pp. 116-120.
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A ferromagnetic shape memory alloy with nomial composition Ni52.5Mn24.5Ga23 (at%) was developed by a melt spinning technique. The as-spun ribbon showed dominant L21 austenitic (cubic) structure with a splitting of the primary peak in the X-ray diffractogram indicating the existence of a martensitic feature. The quenched-in martensitic plates were revealed in transmission electron microscopy. An increase of magnetization at low temperature indicated a martensite to austenite transformation and its reverse with a drop in magnetization during the cooling cycle. Higher magnetic fields propel martensite–austenite transformation spontaneously.
|Uncontrolled Keywords:||Shape memory alloy; Melt-spun ribbons; Martensitic transformation; Magnetization|
|Divisions:||Material Science and Technology|
|Deposited By:||Sahu A K|
|Deposited On:||03 Jun 2010 11:17|
|Last Modified:||06 Feb 2012 17:39|
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