Paper Title:
Domain Structures across the Martensitic Transformation in Ni2+xMn1-xGa
  Abstract

Evolution of domain structures across the martensitic transition (Tm) in the ferromagnetic shape memory alloy system Ni-Mn-Ga is studied using an optical microscope with a temperature variation. Compositions chosen have Tm < Tc, Tm = Tc and Tm > Tc, (Tc=Curie temperature) so that one can compare the nature of martensitic domains. There are no appreciable domain structures when Tm < Tc as compared to the one with Tm > Tc. However, giant morphological changes in the form of appearance of well-developed domains that are propagating with different directions are seen for the composition in which Tm=Tc. The results are discussed in the light of Magnetic Force Microscopy observations as well as giant entropy changes known to occur on samples with co-occurrence of Tm and Tc.

  Info
Periodical
Edited by
V. A. Chernenko and J. M. Barandiaran
Pages
69-74
DOI
10.4028/www.scientific.net/MSF.635.69
Citation
D. Jain, S. Banik, L.S. Sharath Chandra, S.R. Barman, R. Nath, V. Ganesan, "Domain Structures across the Martensitic Transformation in Ni2+xMn1-xGa", Materials Science Forum, Vol. 635, pp. 69-74, 2010
Online since
December 2009
Export
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Deepti Jain, Soma Banik, L.S. Sharath Chandra, S.R. Barman, R. Nath, V. Ganesan
Abstract:Influence of structural transition in the evolution of the magnetic domains in the ferromagnetic shape memory alloy system Ni2+xMn1-xGa is...
115
Authors: Miroslaw Bramowicz, Slawomir Kulesza
III. Poster Session
Abstract:This study presents the results of an analysis of the domain structure of supersaturated X2CoCrMoAl20-15-3 maraging steel. The analyses was...
315