A study of the structural phase transformation in the shape memory alloy Co2NbSn
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posted on 2006-05-10, 17:15authored byKlaus-Ulrich Neumann, T. Kanomata, B. Ouladdiaf, K.R.A. Ziebeck
Resistivity, specific heat and magnetization measurements on the shape memory
compound Co2NbSn corroborate the presence of ferromagnetic order below
119 K and a structural phase transition at 235 K. High-resolution neutron
powder diffraction measurements confirmed that the high-temperature cubic
phase has the Heusler L21 structure and established that the low-temperature
phase is orthorhombic with space group Pmma. The thermal variation of the
specific heat at low temperatures indicates a high density of states consistent
with electronic structure calculations and a band Jahn–Teller mechanism for
the transformation.
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Citation
NEUMANN, KANOMATA, OULADDIAF and ZIEBECK, 2002. A study of the structural phase transformation in the shape memory alloy Co2NbSn. Journal of Physics: Condensed Matter, 14(6), pp. 1371-1380