The research leading to these results has received funding from DFG SPP 1239. The authors are grateful to D. Hinz, O. Heczko, S. Fähler, S. Conti, M. Lenz, J. Feuchtwanger, E. Mäder, R. Häßler, G. Heinrich, U. Gaitzsch, M. Pötschke, S. Roth, W. Skrotzki, M. Acet, S. Aksoy, T.G. Woodcock, J. Lyubina, K.H. Müller, K. Skokov, B. Bergmair and D. Suess for cooperation works, technical supports and helpful discussions.
NiMn-Based Alloys and Composites for Magnetically Controlled Dampers and Actuators†
Article first published online: 23 MAY 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 14, Issue 8, pages 653–667, August 2012
How to Cite
Liu, J., Scheerbaum, N., Kauffmann-Weiss, S. and Gutfleisch, O. (2012), NiMn-Based Alloys and Composites for Magnetically Controlled Dampers and Actuators. Adv. Eng. Mater., 14: 653–667. doi: 10.1002/adem.201200038
- Issue published online: 6 AUG 2012
- Article first published online: 23 MAY 2012
- Manuscript Accepted: 17 APR 2012
- Manuscript Received: 31 JAN 2012
As a new class of magnetically driven active materials, magnetic shape memory (MSM) alloys show large strains of up to 10% in Ni2MnGa single crystal with a modulated martensitic structure. The magnetic field induced twin boundary motion can be exploited for actuators, sensors, and as it is an energy dissipating process, also for vibration damping devices. However, single crystals of Ni2MnGa are difficult to prepare and are inherently very brittle. One solution is the use of aligned MSM particles suspended in a stiffness-matched polymer matrix. In this review, we focus on the preparation and characterization of textured NiMn-based MSM composite. Essential issues, e.g., the criterion of polymer selection and the interface of MSM particles and polymer are discussed. Second aspect of the paper is to review recent developments in metamagnetic shape memory NiMn-(In,Sn,Sb) systems which exhibit field-driven multifunctional properties such as magnetocaloric effect, magnetoresistant change, magnetoelectricity, and thermoelectricity.