Soft modes in Ni2MnGa single crystals
- 21 February 1994
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 6 (8) , L107-L110
- https://doi.org/10.1088/0953-8984/6/8/002
Abstract
We report on measurements of the thermal diffuse X-ray intensity from a single crystal of Ni2MnGa in the temperature range 180 to 250 K. The martensitic phase transition is clearly to be seen. It is accompanied by a strong soft-mode behaviour in the transverse acoustic phonon branch with q along the (110) direction and polarization along (110) in the high-temperature phase. A peak splitting and a super-structure characterize the low-temperature martensitic phase.Keywords
This publication has 4 references indexed in Scilit:
- The crystal structure of thermally- and stress-induced Martensites in Ni2MnGa single crystalsJournal de Physique III, 1992
- Stress - induced martensitic transformations in Ni2MnGaScripta Metallurgica et Materialia, 1992
- Soft mode behavior in NiAl alloysPhysica B: Condensed Matter, 1989
- Magnetic order and phase transformation in Ni2MnGaPhilosophical Magazine Part B, 1984