Title :
Magnetostriction of Ni2MnGa in low and intermediate temperature phases
Author :
Matsui, M. ; Asano, H. ; Ohmori, K. ; Murakami, D. ; Nakakura, T.
Author_Institution :
Dept. of Crystalline Mater. Sci., Nagoya Univ., Japan
Abstract :
The magnetostriction of low and intermediate temperature phases of a single crystal of Ni2MnGa alloy is studied. The single crystal was prepared by the Bridgman method. The magnetization and strain measurement, and the thermal analysis is performed using VSM, gauge and DSC method, respectively. The results suggest that the magnetostriction change is caused by phonon softening before the martensitic transformation.
Keywords :
crystal growth from melt; differential scanning calorimetry; gallium alloys; magnetisation; magnetostriction; manganese alloys; martensitic transformations; nickel alloys; soft modes; strain gauges; stress effects; thermal stability; Bridgman method; DSC method; Ni2MnGa; VSM method; gauge method; intermediate temperature phase; low temperature phase; magnetization; magnetostriction; martensitic transformation; phonon softening; strain measurement; thermal analysis; Magnetic analysis; Magnetization; Magnetostriction; Nickel alloys; Performance analysis; Performance evaluation; Phonons; Softening; Strain measurement; Temperature;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464407
