Volume 34, Issue 3 (Journal of Advanced Materials-fall 2015)                   jame 2015, 34(3): 29-38 | Back to browse issues page

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Ghotbi varzaneh A, Kameli P, Karimzadeh F, Salamati H. Effect of Isothermal Ageing on Structural and Magnetic Properties of Ni47Mn40Sn13 Ferromagnetic Shape Memory Alloy. jame. 2015; 34 (3) :29-38
URL: http://jame.iut.ac.ir/article-1-715-en.html
1- Department of Physics, Isfahan University of Technology, Isfahan, Iran , kameli@cc.iut.ac.ir
Abstract:   (8492 Views)

In this investigation, Ni47Mn40Sn13 ferromagnetic shape memory alloy was prepared by mechanical alloying. The metal powders were ball milled in argon atmosphere for 20 hours. X-ray diffraction pattern confirmed formation of crystalline structure of Heusler alloy. As-milled powder samples were sealed in quartz tubes under high vacuum and subjected to heat treatments at 950°C for different time durations. Then, the effect of isothermal ageing on structural, magnetic and electrical properties of samples was investigated. Results of electrical resistance displayed a metal-like behavior around martensitic transformation. The results showed that 16 hours of annealing was the optimal time for producing this alloy which could be an appropriate candidate for magnetic refrigerant.

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Type of Study: Research | Subject: General
Received: 2015/12/16 | Accepted: 2015/12/16 | Published: 2015/12/16

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