TITLE

Promising ferromagnetic Ni–Co–Al shape memory alloy system

AUTHOR(S)
Oikawa, K.; Wulff, L.; Iijima, T.; Gejima, F.; Ohmori, T.; Fujita, A.; Fukamichi, K.; Kainuma, R.; Ishida, K.
PUB. DATE
November 2001
SOURCE
Applied Physics Letters;11/12/2001, Vol. 79 Issue 20, p3290
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A system of ferromagnetic β phase Ni–Co–Al alloys with an ordered B2 structure that exhibits the shape memory effect has been developed. The alloys of this system within the composition range Ni (30–45 at. %) Co–(27–32 at. %) Al, undergo a paramagnetic/ferromagnetic transition as well as a thermoelastic martensitic transformation from the β to the β[sup ′](L1[sub 0]) phase. The Curie and the martensitic start temperatures in the β phase can be controlled independently to fall within the range of 120–420 K. The specimens from some of the alloys undergoing martensitic transformation from ferromagnetic β phase to ferromagnetic β′ phase are accompanied by the shape memory effect. These ferromagnetic shape memory alloys hold great promise as new smart materials. © 2001 American Institute of Physics.
ACCESSION #
5549500

 

Related Articles

  • Structure parameters and degradation of the critical current of the alloy NT-50 after cryogenic drawing in an ultrasonic field. Volchok, O. I.; Lazareva, M. B.; Okovit, V. S.; Starodubov, Ya. D.; Chernyi, O. V.; Chirkina, L. A. // Low Temperature Physics;May2001, Vol. 27 Issue 5, p353 

    The parameters of the defect and phase structure of the alloy NT-50 are investigated after low-temperature (77 K) deformation by drawing in an ultrasonic field, and the influence of these parameters on the amount of degradation of the critical current under tensile loading at 4.2 K is studied....

  • Co-occurrence of magnetic and structural transitions in the Heusler alloy Ni[sub 53]Mn[sub 25]Ga[sub 22]. Jiang, Chengbao; Feng, Gen; Xu, Huibin // Applied Physics Letters;3/4/2002, Vol. 80 Issue 9, p1619 

    A co-occurrence of magnetic and structural transitions was observed in a nonstoichiometric Ni[sub 53]Mn[sub 25]Ga[sub 22] alloy which undergoes a reverse martensitic transformation from ferromagnetic martensite to paramagnetic austenite at a magnetic transition temperature (134 °C) higher...

  • Magnetic properties and martensitic transformation in quaternary Heusler alloy of NiMnFeGa. Liu, Z. H.; Zhang, M.; Wang, W. Q.; Wang, W. H.; Chen, J. L.; Wu, G. H.; Meng, F. B.; Liu, H. Y.; Liu, B. D.; Qu, J. P.; Li, Y. X. // Journal of Applied Physics;11/1/2002, Vol. 92 Issue 9, p5006 

    Quaternary Heusler alloy Ni[SUB2](Mn,Fe)Ga has been studied systematically for the structure, martensitic transformation, and magnetic properties in two systems of Ni[SUB50.5]Mn[SUB25-x]Fe[SUBx]Ga[SUB24.5] and Ni[SUB50.4]Mn[SUB28-x]Fe[SUBx]Ga[SUB21.6]. Substituting Fe for Mn up to about 70%, the...

  • The structural and magnetic properties of Mn2-xFexNiGa Heusler alloys. Luo, Hongzhi; Meng, Fanbin; Feng, Zhongqiu; Li, Yangxian; Zhu, Wei; Wu, Guangheng; Zhu, Xiaoxi; Jiang, Chengbao; Xu, Huibin // Journal of Applied Physics;Jan2010, Vol. 107 Issue 1, p013905-1 

    The effect of Fe substitution on the phase transformation and magnetic properties of Mn2NiGa has been studied. A single bcc phase was obtained in Mn2-xFexNiGa (x=0–0.6). With the substitution of Fe for Mn, the lattice constant decreases gradually. The martensitic transformation can be...

  • Design in Ni-Mn-In magnetic shape-memory alloy using compositional maps. Huang, Y. J.; Hu, Q. D.; Li, J. G. // Applied Physics Letters;11/26/2012, Vol. 101 Issue 22, p222403 

    Using empirical data, a map of composition versus magnetic properties was developed to design Ni-Mn-In magnetic shape-memory alloys. By the aid of this composition map, five alloys with desired properties were designed. A linear composition dependence of martensitic transformation temperature...

  • Magnetic and electrical properties of Ni50Mn35In15-xSix Heusler alloys. Pathak, Arjun Kumar; Dubenko, Igor; Stadler, Shane; Ali, Naushad // Journal of Applied Physics;Apr2009, Vol. 105 Issue 7, p07B103 

    We have studied the magnetic and electrical properties of the polycrystalline ferromagnetic Ni50Mn35In15-xSix (1≤x≤5) Heusler alloys through magnetization, thermal expansion, and resistivity measurements. It was observed that an increase in Si concentration strongly affects the...

  • Tuning martensitic transformation and large magnetoresistance in Ni50-xCuxMn38Sn12 Heusler alloys. Jing, C.; Yang, Y. J.; Li, Z.; Wang, X. L.; Kang, B. J.; Cao, S. X.; Zhang, J. C.; Zhu, J.; Lu, B. // Journal of Applied Physics;May2013, Vol. 113 Issue 17, p173902 

    In this paper, polycrystalline Ni50-xCuxMn38Sn12 alloys (x = 0, 2, 4, 6) were prepared. The influence of Cu doping on the martensitic transformation and magnetic properties were investigated in these alloys. Experimental results indicate that the martensitic transformation temperature decreases...

  • Effect on magnetic and magnetocaloric properties with Ge substitution in Ni-Mn-Sb Heusler alloys. Sahoo, Roshnee; Nayak, Ajaya K.; Suresh, K. G.; Nigam, A. K. // AIP Conference Proceedings;6/5/2012, Vol. 1447 Issue 1, p1225 

    The effect of Ge substitution on the magnetic, magnetocaloric and transport properties of Ni45Co5Mn38Sb12- xGex (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...

  • Theoretical study of magnetic properties and twin boundary motion in Heusler Ni-Mn-X shape memory alloys using first principles and Monte Carlo method. Kostromitin, K. I.; Buchelnikov, V. D.; Sokolovskiy, V. V.; Entel, P. // Advances in Science & Technology;2013, Vol. 78, p7 

    In this paper we firstly propose and study a microscopic model of twin boundary motion in the Heusler Ni-Mn-X (X= Ga, In, Sb, Sn) alloys on real tetragonal lattice using the first principles and Monte Carlo simulations. The two variants of the low temperature martensite which divided by twin...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics