High-pressure phase transformation of nanometric ZnSb prepared by mechanical alloying

D. M. Trichês (1) , S. M. Souza (1) , J. C. de Lima (2) , T.A. Grandi (2) , C. E. M. Campos (2) , A. Polian (3) , J. P. Itié (3, 4) , F. Baudelet (4) , J. C. Chervin (3)

1 Departamento de Engenharia Mecânica, Universidade Federal de Santa Catarina
2 Departamento de Física [Universidade Federal de Santa Catarina]
3 IMPMC - Institut de minéralogie et de physique des milieux condensés
4 SSOLEIL - Synchrotron SOLEIL

Nanometric orthorhombic ZnSb was prepared by mechanical alloying and its structural stability was studied as a function of pressure. The changes were followed by Raman and x-ray absorption spectroscopy. Between 11.0 and 14.6 GPa, we observed an irreversible phase transformation from the orthorhombic phase to a hexagonal hP1 phase. A similar transformation had been previously observed at 7 GPa for bulk ZnSb. The difference in the phase transformation pressures is attributed to an interfacial component of the nanometric structure

Domaines: Science des matériaux [cond-mat.mtrl-sci]

D. M. Trichês, S. M. Souza, J. C. de Lima, T.A. Grandi, C. E. M. Campos, et al.. High-pressure phase transformation of nanometric ZnSb prepared by mechanical alloying. Journal of Applied Physics, 2009, 106, pp.013509. ⟨10.1063/1.3158523⟩. ⟨hal-00441515⟩