  The martensitic transformation in new-type all-d-metal Heusler alloys Pd2MnTi
and Pt2MnTi have been investigated based on first-principles investigations.
The calculated results indicate that the martenstic transformation have great
possibility to occur in both Pd2MnTi and Pt2MnTi. The energy differences
between the cubic and tetragonal phases are 215.12 meV and 329.45 meV for
Pd2MnTi and Pt2MnTi, respectively. The analysis of the electronic structure of
cubic and tetragonal phases also support this conclusion. The magnetic
properties are also investigated for the two compounds.
