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  • Title: The effect of substitution of Mn by Fe and Cr on the martensitic transition in the Ni50Mn34In16 alloy.
    Author: Sharma VK, Chattopadhyay MK, Nath SK, Sokhey KJ, Kumar R, Tiwari P, Roy SB.
    Journal: J Phys Condens Matter; 2010 Dec 08; 22(48):486007. PubMed ID: 21406765.
    Abstract:
    The potential shape memory alloy Ni(50)Mn(34)In(16) is studied with partial substitution of Mn with Fe and Cr to investigate the effect of such substitution on the martensitic transition in the Ni-Mn-In alloy system. The results of ac susceptibility, magnetization and electrical resistivity measurements show that while the substitution with Cr increases the martensitic transition temperature, the substitution with Fe decreases it. Possible reasons for this shift in martensitic transition are discussed. Evidence of kinetic arrest of the austenite to martensite phase transition in the Fe substituted alloys is also presented. Unlike the kinetic arrest of the austenite to martensite phase transition in the parent Ni(50)Mn(34)In(16) alloy which takes place in the presence of high external magnetic field, the kinetic arrest of the austenite to martensite phase transition in the Fe doped alloy occurs even in zero magnetic field. The Cr substituted alloys, on the other hand, show no signature of kinetic arrest of this phase transition.
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