Phase transformations in sputtered Ni-Mn-Ga magnetic shape memory alloy thin films Academic Article uri icon


  • Ni-Mn-Ga magnetic shape memory alloy films have been prepared by the DC magnetron sputtering technique. As-deposited films show a quasi-amorphous structure that crystallizes at 500 K. Crystallization study using Kissinger's analysis reveals a relatively low activation energy indicating partial crystallinity in the films. In situ X-ray diffraction studies show reversible martensite phase transformations, and phase segregation to non-transforming L1 2 precipitates at higher temperatures. It was observed that the phase segregation can be suppressed by low temperature heat treatment. 2011 Elsevier B.V. All rights reserved.

published proceedings


author list (cited authors)

  • Jetta, N., Ozdemir, N., Rios, S., Bufford, D., Karaman, I., & Zhang, X.

citation count

  • 19

complete list of authors

  • Jetta, N||Ozdemir, N||Rios, S||Bufford, D||Karaman, I||Zhang, X

publication date

  • February 2012