Structural, magnetic, magnetocaloric and magnetotransport properties in Ge doped Ni-Mn-Sb Heusler alloys

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• 作者：Roshnee Sahoo^a ; Ajaya K. Nayak^a ; K.G. Suresh^a ; ^{suresh@phy.iitb.ac.in} ; A.K. Nigam^b
• 关键词：Full Heusler alloy ; Magnetocaloric effect ; Magnetoresistance
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2012
• 出版时间：April 2012
• 年：2012
• 卷：324
• 期：7
• 页码：1267-1271
• 全文大小：868 K

文摘

The effect of Ge substitution on the magnetic, magnetocaloric and transport properties of Ni₄₅Co₅Mn₃₈Sb_12?em>xGe_x (x=0-3) has been investigated. The decrease in the exchange interaction brought by Ge substitution can be seen from the reduction in the magnetization of austenite phase and the increase in the martensitic transition temperature. The magnetocaloric effect and the magnetoresistance values are found to be quite sensitive to small changes in Sb/Ge ratio. Taking into account various properties, the present series seems to be a promising multifunctional system.