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Article
Elastic constants of Ni-Mn-Ga magnetic shape memory alloys
Physical Review B
  • Marcelo Stipcich, Universitat de Barcelona
  • Lluís Mañosa, Universitat de Barcelona
  • Antoni Planes, Universitat de Barcelona
  • Michel Morin, Institut National des Sciences Appliquées
  • Jerel L. Zarestky, Iowa State University
  • Thomas A. Lograsso, Iowa State University
  • C. Stassis, Iowa State University
Document Type
Article
Publication Date
8-31-2004
DOI
10.1103/PhysRevB.70.054115
Abstract

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.

Comments

This article is from Physical Review B 70 (2004): 054115, doi:10.1103/PhysRevB.70.054115.

Copyright Owner
American Physical Society
Language
en
Date Available
2013-09-23
File Format
application/pdf
Citation Information
Marcelo Stipcich, Lluís Mañosa, Antoni Planes, Michel Morin, et al.. "Elastic constants of Ni-Mn-Ga magnetic shape memory alloys" Physical Review B Vol. 70 Iss. 5 (2004) p. 054115
Available at: http://works.bepress.com/thomas_lograsso/146/