J. Phys. IV France
Volume 112, October 2003
Page(s) 951 - 954

J. Phys. IV France
112 (2003) 951
DOI: 10.1051/jp4:20031038

Magnetic field induced strains caused by different martensites in Ni-Mn-Ga alloys

V.A. Chernenko1, P. Müllner2, M. Woligarten2, J. Pons3 and G. Kostorzl1

1  Institute of Magnetism, Vernadsky Str. 36-b, 03142 Kiev, Ukraine
2  ETH Zürich, Institut für Angewandte Physik, 8093 Zürich, Switzerland
3  Universitat de les Illes Balears, Departament de Fisica, Palma de Mallorca, Spain

Strains induced by magnetic fields applied at room temperature were measured for three single crystalline Ni-Mn-Ga alloys with similar magnetic properties and martensitic transformation characteristics-one containing 5-layered tetragonal martensite (alloy A), the others containing 7-layered monoclinic martensite (alloys B, C). Strains of 1.8% have been achieved in alloy A while alloys B and C showed only strains comparable to the true magnetostriction.

© EDP Sciences 2003