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Shape memory effect and superelasticity are studied in this paper. At room temperature, perfect strain plateaus of 3.3%, 2% and 3% are obtained in the [001], [110] and [111] directions. The energies required to induce the martensitic transformation in different crystallographic directions are estimated from the stress-strain results. Each of the magnetization curves in the martensitic phase indicates that a magnetic anisotropy energy density Ku = (1/2)MsHa =4.8× 105 erg/cm3, which is far smaller than the mechanical driving force for variants twinning. This interpretes why only a little magnetic field induced strain in NiFeGa alloy has been observed so far.
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Keywords:
- ferromagnetic shape memory alloys /
- NiFeGa /
- shape memory effect /
- superelasticity
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[2] Wu G H, Yu C H, Meng L Q, Chen J L, Yang F M, Qi S R, Zhan W S, Wang Z, Zheng Y F, Zhao L C 1999 Appl. Phys. Lett. 75 2990
[3] Sozinov A, Likhachev A A, Lanska N, Ullakko K 2002 Appl. Phys. Lett. 80 1746
[4] Fujita A, Fukamich. K, Gejima F, Kainuma R, Isshida K 2001 Appl. Phys. Lett. 77 3054
[5] Wuttig M, Li J, Craciunescu C 2001 Scr. Mater. 44 2393
[6] Oikawa K, Wulff L, Iijima T, Gejima F, Ohmori T, Fujita A, Fukamichi K, Kainuma R, Ishida K 2001 Appl. Phys. Lett. 79 3290
[7] Oikawa K, Ota T, Ohmori T, Tanaka Y, Morito H, Fujita A, Kainuma R, Fukamichi K, Ishida K 2002 Appl. Phys. Lett. 81 5201
[8] Liu Z H, Zhang M, Cui Y T, Zhou Y Q, Wang W H, Wu G H, Zhang X X, Xiao G 2002 Appl. Phys. Lett. 82 424
[9] Sutou Y, Imano Y, Koeda N, Omori T, Kainuma R, Ishida K, Oikawa K 2004 Appl. Phys. Lett. 85 4358
[10] Zheng H X, Liu J, Xia M X, Li J G 2005 Acta Phys. Sin. 54 1719 (in Chinese) [郑红星,刘剑,夏明许,李建国 2005 物理学报 54 1719]
[11] Morito H, Fujita A, Fukamichi K, Kainuma R, Ishida K 2003 Appl. Phys. Lett. 83 4993
[12] Murakami Y, Shindo D, Oikawa K, Kainuma R, Ishida K 2003 Appl. Phys. Lett. 82 3695
[13] Sutou Y, Kamiya N, Omori T, Kainuma R, Ishida K, Oikawa K 2004 Appl. Phys. Lett. 84 1275
[14] Yu S Y, Liu H Y, Qu J P, Li Y X, Liu Z H, Chen J L, Dai X F, Wu G H 2006 Acta Phys. Sin. 55 3022 (in Chinese) [于淑云,刘何燕,曲静萍,李养贤,柳祝红,陈京兰,代学芳,吴光恒 2006 物理学报 55 3022]
[15] Sehitoglu H, Jun J, Zhang X, Karaman I, Chumlyakov Y, Maier H J, Gall K 2001 Acta Mater. 49 3609
[16] Masdeu F, Pons J, Segui C, Cesari E, Dutkiewicz J 2005 J. Magn. Magn. Mater. 290-291 816
[17] Cui Y T, Zhu Y B, Wang W L 2004 Acta Phys. Sin. 53 861 (in Chinese) [崔玉亭,朱亚波,王万录 2004 物理学报 53 861]
[18] O’Handley R C 1998 J. Appl. Phys. 83 3263
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[1] Ullakko K, Huang J K, O’Handley R C, Kokorin V V 1996 Appl. Phys. Lett. 69 1966
[2] Wu G H, Yu C H, Meng L Q, Chen J L, Yang F M, Qi S R, Zhan W S, Wang Z, Zheng Y F, Zhao L C 1999 Appl. Phys. Lett. 75 2990
[3] Sozinov A, Likhachev A A, Lanska N, Ullakko K 2002 Appl. Phys. Lett. 80 1746
[4] Fujita A, Fukamich. K, Gejima F, Kainuma R, Isshida K 2001 Appl. Phys. Lett. 77 3054
[5] Wuttig M, Li J, Craciunescu C 2001 Scr. Mater. 44 2393
[6] Oikawa K, Wulff L, Iijima T, Gejima F, Ohmori T, Fujita A, Fukamichi K, Kainuma R, Ishida K 2001 Appl. Phys. Lett. 79 3290
[7] Oikawa K, Ota T, Ohmori T, Tanaka Y, Morito H, Fujita A, Kainuma R, Fukamichi K, Ishida K 2002 Appl. Phys. Lett. 81 5201
[8] Liu Z H, Zhang M, Cui Y T, Zhou Y Q, Wang W H, Wu G H, Zhang X X, Xiao G 2002 Appl. Phys. Lett. 82 424
[9] Sutou Y, Imano Y, Koeda N, Omori T, Kainuma R, Ishida K, Oikawa K 2004 Appl. Phys. Lett. 85 4358
[10] Zheng H X, Liu J, Xia M X, Li J G 2005 Acta Phys. Sin. 54 1719 (in Chinese) [郑红星,刘剑,夏明许,李建国 2005 物理学报 54 1719]
[11] Morito H, Fujita A, Fukamichi K, Kainuma R, Ishida K 2003 Appl. Phys. Lett. 83 4993
[12] Murakami Y, Shindo D, Oikawa K, Kainuma R, Ishida K 2003 Appl. Phys. Lett. 82 3695
[13] Sutou Y, Kamiya N, Omori T, Kainuma R, Ishida K, Oikawa K 2004 Appl. Phys. Lett. 84 1275
[14] Yu S Y, Liu H Y, Qu J P, Li Y X, Liu Z H, Chen J L, Dai X F, Wu G H 2006 Acta Phys. Sin. 55 3022 (in Chinese) [于淑云,刘何燕,曲静萍,李养贤,柳祝红,陈京兰,代学芳,吴光恒 2006 物理学报 55 3022]
[15] Sehitoglu H, Jun J, Zhang X, Karaman I, Chumlyakov Y, Maier H J, Gall K 2001 Acta Mater. 49 3609
[16] Masdeu F, Pons J, Segui C, Cesari E, Dutkiewicz J 2005 J. Magn. Magn. Mater. 290-291 816
[17] Cui Y T, Zhu Y B, Wang W L 2004 Acta Phys. Sin. 53 861 (in Chinese) [崔玉亭,朱亚波,王万录 2004 物理学报 53 861]
[18] O’Handley R C 1998 J. Appl. Phys. 83 3263
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