Elastic constants of Ni-Mn-Ga magnetic shape memory alloys
Data(s) |
28/12/2009
28/12/2009
2004
|
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Resumo |
We have measured the adiabatic second order elastic constants of two Ni-Mn-Ga magnetic shape memory crystals with different martensitic transition temperatures, using ultrasonic methods. The temperature dependence of the elastic constants has been followed across the ferromagnetic transition and down to the martensitic transition temperature. Within experimental errors no noticeable change in any of the elastic constants has been observed at the Curie point. The temperature dependence of the shear elastic constant C' has been found to be very different for the two alloys. Such a different behavior is in agreement with recent theoretical predictions for systems undergoing multi-stage structural transitions. |
Formato |
5 p. application/pdf |
Identificador |
0163-1829 http://hdl.handle.net/2445/10556 540285 |
Idioma(s) |
eng |
Publicador |
The American Physical Society |
Relação |
Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.70.054115 Physical Review B, 2004, vol. 70, núm. 5, p. 54115-1-54115-5 |
Direitos |
(c) The American Physical Society, 2004 info:eu-repo/semantics/openAccess |
Palavras-Chave | #Transformacions martensítiques #Aliatges #Elasticitat #Martensitic transformations #Alloys #Elasticity |
Tipo |
info:eu-repo/semantics/article |