Spectroscopic evidence of band Jahn-Teller distortion upon martensitic phase transition in Heusler-type Ni-Fe(Co)-Ga ferromagnetic shape-memory alloy films

2015 ◽  
Vol 91 (13) ◽  
Author(s):  
K. Sumida ◽  
K. Shirai ◽  
S. Zhu ◽  
M. Taniguchi ◽  
M. Ye ◽  
...  
Keyword(s):  
Phase Transition ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Ferromagnetic Shape Memory Alloy ◽  
Teller Distortion ◽  
Spectroscopic Evidence ◽  
Martensitic Phase Transition ◽  
Jahn Teller ◽  
Ferromagnetic Shape Memory ◽  
Jahn Teller Distortion

Phase Equilibria and Phase Transition of the Ni–Fe–Ga Ferromagnetic Shape Memory Alloy System

2007 ◽  
Vol 38 (4) ◽  
pp. 767-776 ◽  
Author(s):  
Katsunari Oikawa ◽  
Toshihiro Omori ◽  
Yuji Sutou ◽  
Haruhiko Morito ◽  
Ryosuke Kainuma ◽  
...  
Keyword(s):  
Phase Transition ◽  
Shape Memory Alloy ◽  
Phase Equilibria ◽  
Shape Memory ◽  
Alloy System ◽  
Ferromagnetic Shape Memory Alloy ◽  
Ferromagnetic Shape Memory

Effects on Temperature-Induced Phase Transition of Ni2MnGa Polycrystalline Ferromagnetic Shape Memory Alloys

2014 ◽  
Vol 697 ◽  
pp. 12-16
Author(s):  
Yu Ping Zhu ◽  
Yun Ling Gu ◽  
Hong Guang Liu
Keyword(s):  
Mechanical Properties ◽  
Phase Transition ◽  
Shape Memory Alloy ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Directional Solidification ◽  
Smart Material ◽  
Ferromagnetic Shape Memory Alloy ◽  
Ferromagnetic Shape Memory Alloys ◽  
Ferromagnetic Shape Memory

Ferromagnetic shape memory alloy is a kind of new smart material. Directional solidification method in producing polycrystalline Ni2MnGa is mature and effective. In order to increase the strain of Ni2MnGa polycrystalline prepared by directional solidification, mechanical training is an effective method. In this paper, the tests of temperature-induced strain are carried out in different directions of Ni2MnGa prepared by directional solidification using three kinds of specimens with various mechanical training. Through analyzing the mechanical properties in different directions, the influence of mechanical training on the temperature-induced strain are investigated. Some conclusions which may provide references for the engineering applications of this material are gained.

Dynamical Observation of Magnetic Domain Structure in Ni-Mn-Ga Ferromagnetic Shape Memory Alloy

2004 ◽  
Vol 10 (S02) ◽  
pp. 502-503
Author(s):  
Kazuo Yamamoto ◽  
Koichi Tsuchiya ◽  
Tsukasa Hirayama
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Domain Structure ◽  
Magnetic Domain ◽  
Magnetic Domain Structure ◽  
Ferromagnetic Shape Memory Alloy ◽  
Ferromagnetic Shape Memory

Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.

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