Seminar Notice
Ni-Mn-Ga: a ferromagnetic shape memory alloy
Dr. Sudipta Roy Barman
UGC-DAE Consortium for Scientic Research, Indore
Ni-Mn-Ga is a ferromagnetic shape memory alloy with highest known magnetic eld
induced strain of
10% that is much larger than the leading magnetostrictive material,Terfenol-D (
0:24% strain). The shape memory effect can be driven by the magneticeld in Ni-Mn-Ga, which is faster and more efcient than temperature or stress driven
shape memory effect. Ni-Mn-Ga exhibits interesting changes in its properties as function
of temperature and composition. In order to understand these, we have studied its
structural, magnetic, transport, and electronic properties in collaboration with different
research groups in the country. Ab-initio density functional theory based calculations
have been performed to augment the experimental results. In this talk, our recent ndings
on crystal structure, phase diagram, magneto-transport and electronic structure of
Ni-Mn-Ga will be discussed.
Date and time: 28th November, 4:00pm
Place: LH1, SNBCBS
All are cordially invited to attend the talk
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ŠSNB Library, S.N. Bose National Centre for Basic Sciences, Sector - III, Block - JD, Salt Lake, Kolkata - 700 098
Phone: +91 (033) 2335 5707 Fax : +91 (033) 2335 3477 Email : shohini@bose.res.in
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