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February 25-26, 2019 | Paris, France
Materials Science and Engineering
2 nd International Conference on
Journal of Materials Science and Nanotechnology | Volume 3
New multifunctional materials, called magnetic shape
memoryalloys(MSMAs),comprisethoseoff-stoichiometric
Heusler-type X2YZ compounds (where X and Y are transition
metals and Z belongs to the III-V group in the periodic table
of elements), which exhibit martensitic transformation (MT)
accompanied by a complexmagnetic reordering. Due to strong
interactions between structural and magnetic degrees of
freedom in the vicinity of MT, they exhibiting giant properties,
such as magnetic field induced strain, magnetoresistance,
inverse magnetocaloric effect alongside conventional shape
memory and superelasticity effects. These properties can be
easily tuned by the composition variation, doping or heat
treatments. MSMAs are cost-effective, rare-earth-element
free and nontoxic. They can be conventionally divided into two
major groups: ferromagnetic shape memory alloys (FSMAs),
such as prototype Ni-Mn-Ga, especially suitable for actuation,
and the metamagnetic shape memory alloys (MetaMSMAs),
such as Mn-rich Ni-Mn-X (X=In, Sn, Sb), particularly important
for magnetocaloric applications. Both types of materials are
capable to efficiently transduce the thermal, mechanical and
magnetic energies into each other under conjugating fields
producing cross-linked effects on both macro- and micro-
(nano)scale. In this talk, we introduce the underlying physical
mechanisms responsible for such energy conversions and
the origin of the related performances of these materials. A
broad range of the possible applications, such as actuation,
sensing, energy harvesting and ferroic cooling will be reviewed
Speaker Biography
Volodymyr Chernenko has completed his PhD at the age of 26 years from Moscow
State University, Russia. He is the Ikerbasque research professor at BCMaterials &
University of Basque Country. He has 38 years of research experience in centres in
Ukraine, Germany, Japan, Italy, United States, France, Switzerland, Australia, Spain,
Hong Kong and Russia. He is the author and co-author of 14 patents and 315 original
papers in ISI scientific journals and 5 book chapters with more than 8400 citations
and h-index equal to 46 (Google Scholar). He is an International fellow awardee of
the Helmholtz Association (Germany) since 2014. He is world-wide known as one of
the founders of the new research area “Ferromagnetic shape memory alloys” being
organizer and/or invited speaker of many International conferences.
e:
Volodymyr Chernenko
Ikerbasque - Basque Foundation for Science, Spain
Magnetic shape memory materials: Scientific background and practical horizons