Document Type

Article

Publication Date

8-7-2000

Journal or Book Title

Applied Physics Letters

Volume

77

Issue

6

First Page

886

Last Page

888

DOI

10.1063/1.1306635

Abstract

Field-induced strains of 6% are reported in ferromagnetic Ni–Mn–Ga martensites at room temperature. The strains are the result of twin boundary motion driven largely by the Zeeman energy difference across the twin boundary. The strain measured parallel to the applied magnetic field is negative in the sample/field geometry used here. The strain saturates in fields of order 400 kA/m and is blocked by a compressive stress of order 2 MPa applied orthogonal to the magnetic field. The strain versus field curves exhibit appreciable hysteresis associated with the motion of the twin boundaries. A simple model accounts quantitatively for the dependence of strain on magnetic field and external stress using as input parameters only measured quantities.

Comments

The following article appeared in Applied Physics Letters 77 (2000): 886 and may be found at http://dx.doi.org/10.1063/1.1306635.

Rights

Copyright 2000 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Copyright Owner

American Institute of Physics

Language

en

File Format

application/pdf

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