Occurrence of ferromagnetic shape memory alloys

Manfred R. Wuttig; Koichi Tsuchiya; Richard D. James

doi:10.1117/12.388211

14 June 2000 Occurrence of ferromagnetic shape memory alloys

Manfred R. Wuttig, Koichi Tsuchiya, Richard D. James

Proceedings Volume 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics; (2000) https://doi.org/10.1117/12.388211
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

This article presents an overview of the necessary conditions for the formation of Shape Memory Alloys (SMAs) and how these must overlap with the occurrence of ferromagnetism so that FerroMagnetic Shape Memory Alloys (MSMAs) may be formed. The electronic, elastic and geometric conditions permit an understanding of the occurrence of Cu and Fe based SMAs as well as NiMnGa Heusler MSMAs except that the naively determined critical electron concentration for the latter, 7.3, disagrees with the values of 1.5 and 8.6 accepted for the Hume-Rothery Phases and certain Fe- based systems.

Citation Download Citation

Manfred R. Wuttig, Koichi Tsuchiya, and Richard D. James "Occurrence of ferromagnetic shape memory alloys", Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); https://doi.org/10.1117/12.388211

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