Large Magnetic-Field-Induced Strains in Ni–Mn–Ga Nonmodulated Martensite

Authors

V. A. Chernenko, Universidad del País Vasco
Markus Chmielus, Boise State UniversityFollow
Peter Müllner, Boise State UniversityFollow

Document Type

Article

Publication Date

9-7-2009

Abstract

Large magnetic field-induced strains of up to 0.17% for a stress-free Ni_53.1Mn_26.6Ga_20.3 single crystal with nonmodulated martensite phase were generated in a rotating magnetic field. This magnetic-field-induced strain, which is ten times larger than values reported so far for nonmodulated martensites, evidences significant magnetic-field-induced twin boundary motion, which so far was thought to be impossible. This result reinforces the interest in nonmodulated martensites, which are formed as a ground state in the Heusler-type ferromagnetic shape memory alloys.

Publication Information

Chernenko, V. A.; Chmielus, Markus; and Müllner, Peter. (2009). "Large Magnetic-Field-Induced Strains in Ni–Mn–Ga Nonmodulated Martensite". Applied Physics Letters, 95(10), 104103-1 - 104103-3. https://doi.org/10.1063/1.3227661