CONFERENCE PROCEEDINGS
Advanced Search >
Home > Proceedings > Volume 5053 > Article
Translator Disclaimer
Open Access Paper
13 August 2003 Magnetic-field-induced strain in single-crystal Ni-Mn-Ga
Robert C. O'Handley, Samuel M. Allen, David I. Paul, Christopher P. Henry, Miguel A. Marioni, David Bono, Catherine Jenkins, Afua Banful, Ryan Wagner
Author Affiliations +
Proceedings Volume 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics; (2003) https://doi.org/10.1117/12.498549
Event: Smart Structures and Materials, 2003, San Diego, California, United States
Abstract
Field-induced strains up to 10% at room temperature have been observed in magnetic shaep memory alloys based on off-stoichiometric compositions of the intermetallic compound Ni2MnGa. This occurs by the motion of twin boundaries in the ferromagnetic martensitic state under magnetic fields of a few kOe. Some data illustrating the interdependence of strain, stress, and magnetic field are reviewed. Phenomenological models describe many of these observations by minimization of free energy terms including Zeeman energy, magnetocrystalline anisotropy energy, stored elastic energy and fractional twin-boundary distribution. Two important questions have been raised about field-induced strain in FSMAs. They are 1) the role of body forces (due to action of the field on the sample), and 2) the role of magnetostriction (stress/strain in a single variant under magnetization rotation) in the twin boundary motion. These questions are addressed in light of published data and models.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Robert C. O'Handley, Samuel M. Allen, David I. Paul, Christopher P. Henry, Miguel A. Marioni, David Bono, Catherine Jenkins, Afua Banful, and Ryan Wagner "Magnetic-field-induced strain in single-crystal Ni-Mn-Ga", Proc. SPIE 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics, (13 August 2003); https://doi.org/10.1117/12.498549
PROCEEDINGS
 7 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
SHARE
GET CITATION
< Previous Article
|
Next Article >
Advertisement
Advertisement
KEYWORDS
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top