Stress modulated martensitic transition and magnetocaloric effect in hexagonal Ni2In-type MnCoGe1-xInx alloys

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[1] Liu, Y.
[2] Shen, F.R.
[3] Zhang, M.
[4] Bao, L.F.
[5] Wu, R.R.
[6] Zhao, Y.Y.
[7] Hu, F.X.
[8] Wang, J.
[9] Zuo, W.L.
[10] Sun, J.R.
[11] Shen, B.G.
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Hu, F.X. (fxhu@iphy.ac.cn) | 1600年 / Elsevier Ltd卷 / 649期
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Abstract Effects of residual strain on martensitic transition and magnetocaloric effect have been studied in hexagonal Ni2In-type MnCoGe1-xInx alloys; which were prepared by using conventional arc-melting technique. Our studies indicated that the introduction of residual strain in the thin slices prepared by cold pressing can stabilize the austenite phase; broaden the temperature range of martensitic transition; and decouple the magnetic and structural transition in some extent. As a result; the magnetic entropy change is reduced; but the refrigerating temperature window can be expanded to 54 K or 73 K and the refrigerating capacity is remarkably increased. © 2015 Published by Elsevier B.V;
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