Martensitic transformation in Ni-Mn-Ga thin films deposited on alumina

M. Hagier, V. A. Chernenko, M. Ohtsuka, S. Besesseghini, P. Müller

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Ni-Mn-Ga magnetic shape memory alloys (MSMAs) tend to undergo a large, reversible deformation upon the application of a magnetic field. This deformation is attributed to twin boundary motion in the martensitic phase. In an effort to utilize the magneto-mechanical behavior of Ni-Mn-Ga polycrystalline thin films for micro-sensors and actuators, the behavior of NiMn-Ga thin films is paid a great attention last few years. Substrate curvature measurements on Ni-Mn-Ga films, deposited on Al2O3 ceramics, were performed. The martensitic transformation in the film is manifested by an anomalous stress change accompanied by thermal hysteresis. The stress-curvature experiments display a stress relaxation during the martensitic transformation of approximately 30-100 MPa, depending on film thickness.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Martensitic Transformations, ICOMAT-08
Pages453-457
Number of pages5
Publication statusPublished - 2009 Dec 1
Event12th International Conference on Martensitic Transformations, ICOMAT-08 - Santa Fe, NM, United States
Duration: 2008 Jun 292008 Jul 5

Publication series

NameProceedings of the International Conference on Martensitic Transformations, ICOMAT-08

Other

Other12th International Conference on Martensitic Transformations, ICOMAT-08
CountryUnited States
CitySanta Fe, NM
Period08/6/2908/7/5

ASJC Scopus subject areas

  • Materials Chemistry

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