Multiple magneto-functional properties of Ni₄₆Mn₄₁In₁₃ shape memory alloy

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• 作者：S. Pramanick ; S. Chatterjee ; S. Giri ; S. Majumdar ; V.V. Koledov ; A. Mashirov ; A.M. Aliev ; A.B. Batdalov ; B. Hern ; o ; W.O. Rosa ; L. Gonz¨¢lez-Legarreta
• 关键词：Ferromagnetic shape memory alloy ; Magnetoresistance ; Magnetocaloric effect ; Exchange bias
• 刊名：Journal of Alloys and Compounds
• 出版年：2013
• 出版时间：25 November, 2013
• 年：2013
• 卷：578
• 期：Complete
• 页码：157-161
• 全文大小：697 K

文摘

The transport and magnetic properties of ferromagnetic shape memory alloy of nominal composition Ni₄₆Mn₄₁In₁₃ are reported. The alloy undergoes martensitic phase transition (MPT) around 240 K. The region around this structural transition is found to be highly metastable and susceptible to the applied magnetic field. Giant negative magnetoresistance (¡« ?64 % at 70 kOe) is observed in the vicinity of the thermally driven MPT. The existence of large inverse magnetocaloric effect around the MPT is also confirmed by the direct measurement using modulated ac field technique. The sample shows large exchange bias at low temperature. The role of Mn-Mn intersite antiferromagnetic correlation is discussed for the above magneto-functional behaviors.