Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 509, Issue 5, Pages 1389-1393Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.10.176
Keywords
Nickel alloys; Magnetic properties; Martensitic phase transformation; Shape memory alloys; Field-induced reverse martensitic; transformation
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Funding
- Core Research for Evolutional Science and Technology (CREST)
- Japan Science and Technology Agency (JST)
- Japanese Society for the Promotion of Science (JSPS)
- Grants-in-Aid for Scientific Research [21560693] Funding Source: KAKEN
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High-field magnetic measurements were carried out in order to investigate behaviors of field-induced reverse martensitic transformation and kinetic arrest of NiCoMnSn metamagnetic shape memory alloy. In the thermomagnetization curves, it was confirmed that the reverse martensitic transformation temperature decreases 67 K by applying magnetic field of 5T, while in the magnetic field cooling process under 5T, martensitic transformation does not occur down to low temperatures. Equilibrium magnetic field, defined from the critical magnetic fields of the metamagnetic evidence in the magnetization curves, exhibits almost constant below about 100 K, suggesting that the entropy change becomes zero, which is considered to cause kinetic arrest behavior. (C) 2010 Elsevier B.V. All rights reserved.
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