Structural and Magnetic Properties of Melt-Spun Ni-Mn(Fe)-Ga Ferromagnetic Shape Memory Ribbons

2014 ◽  
Vol 50 (4) ◽  
pp. 1-3 ◽  
Author(s):  
Vladimir V. Khovaylo ◽  
Viktor V. Koledov ◽  
Dmitry I. Kuchin ◽  
Vladimir G. Shavrov ◽  
Natalia N. Resnina ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Shape Memory ◽  
Melt Spun ◽  
Structural And Magnetic Properties ◽  
Ferromagnetic Shape Memory

Influence of Long-Range Atomic Order on the Structural and Magnetic Properties of Ni-Mn-Ga Ferromagnetic Shape Memory Alloys

2011 ◽  
Vol 684 ◽  
pp. 85-103 ◽  
Author(s):  
Vicente Sánchez-Alarcos ◽  
José Ignacio Pérez-Landazábal ◽  
Vicente Recarte
Keyword(s):  
Magnetic Properties ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Long Range ◽  
Atomic Order ◽  
Ferromagnetic Shape Memory Alloys ◽  
Magnetic Exchange ◽  
Range Atomic Order ◽  
Structural And Magnetic Properties ◽  
Ferromagnetic Shape Memory

This chapter presents a review of the most recent and systematic works performed on the study of the effect of atomic order on the structural and magnetic properties of Ni-Mn-Ga ferromagnetic shape memory alloys. It is shown that a correlation between long-range atomic order and the martensitic and Curie temperatures can be established from the analysis of its evolution under high and low temperature thermal treatments. In particular, it is demonstrated that, irrespectively of the thermal treatment, both transformation temperatures increase with the increasing L21 atomic order degree, showing practically the same linear dependence on the nextnearest- neighbors atomic order parameter, in such a way that the effect of the atomic order on the relative stability between austenite and martensite can be quantitatively determined. In this respect, it is shown that the effect of atomic order on the martensitic (and also the premartensitic) transformation is directly related to the variation of the magnetic exchange coupling.

Sign in / Sign up

Export Citation Format

Share Document