Transmission electron microscopy on as–deposited and freestanding single crystalline Fe 70 Pd 30 ferromagnetic shape memory alloy thin film

2017 ◽  
Vol 136 ◽  
pp. 97-100 ◽  
Author(s):  
A. Landgraf ◽  
A. Lotnyk ◽  
S.G. Mayr
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Alloy Thin Film ◽  
Ferromagnetic Shape Memory Alloy ◽  
Single Crystalline ◽  
Transmission Electron ◽  
Ferromagnetic Shape Memory

Development of Ni-Mn-Ga Based Ferromagnetic Shape Memory Alloy by Rapid Solidification Technique

2008 ◽  
Vol 52 ◽  
pp. 17-27
Author(s):  
Amitava Mitra ◽  
A.K. Panda
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Rapid Solidification ◽  
Melt Spinning ◽  
X Ray Diffraction ◽  
Ferromagnetic Shape Memory Alloy ◽  
Electron Microscopic ◽  
Transmission Electron ◽  
Rapid Solidification Technique ◽  
Ferromagnetic Shape Memory

Rapid solidification route by melt spinning has been adopted for preparation of a Ni52.5Mn24.5Ga23 (at %) ferromagnetic shape memory alloy in the form of ribbons. In the as-spun state, the ribbon revealed a predominant austenitic L21 structure in combination with martensitic feature as observed from x-ray diffraction studies. Transmission electron microscopic (TEM) evaluation showed these features in the form of martensitic plates. At low temperature, martensite to austenite transformation was exhibited by an increase in magnetization during heating cycle. The reverse effect was observed during cooling cycle. Annealing temperature and magnetising field was also found to effect this transformation.

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