Journal
MATERIALS TRANSACTIONS
Volume 51, Issue 3, Pages 469-471Publisher
JAPAN INST METALS
DOI: 10.2320/matertrans.MBW200915
Keywords
NiCoMnGa; metamagnetic shape memory alloy; kinetic arrest
Funding
- Japan Society for the Promotion of Science (JSPS)
- Global COE Program
- Tohoku University, MEXT, Japan
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Martensitic and magnetic properties of Ni33.0Co13.4Mn39.7Ga13.9 metamagnetic shape memory alloy were investigated. The kinetic arrest phenomenon was observed at about 120 K by thermomagnetization measurements, and magnetic field-induced transformation (MFIT) was also detected at various temperatures ranging from 4.2 to 300 K. By evaluation of the equilibrium magnetic fields and temperatures based on the transformation fields and temperatures, it was confirmed that the transformation entropy change below 120 K becomes almost zero, which results in the kinetic arrest phenomenon. [doi: 10.2320/matertrans.MBW200915]
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