Hardening of (Pb,Cd)Te Crystal Lattice with an Increasing CdTe Content in the Solid Solution
R. Kuna a, S. Adamiak b, S. Petit c, P. Baroni c, K. Gasa,d, R. Minikayev a, A. Szczerbakow a, J. Łażewski e and W. Szuszkiewiczb,a
aInstitute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
bFaculty of Mathematics and Natural Sciences, University of Rzeszów, S. Pigonia 1, PL-35310 Rzeszów, Poland
cLaboratoire Léon Brillouin, CEA-CNRS, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France
dInstitute of Experimental Physics, Faculty of Physics and Astronomy, University of Wrocław, Pl. M. Borna 9, PL-50204 Wrocław, Poland
eInstitute of Nuclear Physics, Polish Academy of Sciences, E. Radzikowskiego 152, PL-31342, Kraków, Poland
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Single crystals of the (Pb,Cd)Te solid solution with CdTe content up to 9% were grown by self-selecting vapour growth method and investigated by powder X-ray diffraction, inelastic neutron scattering, and nanoindentation measurements. The analysis of the linear part of the LA phonon dispersion, determined by the inelastic neutron scattering demonstrated an increase of the sound velocity (thus the hardening of the crystal lattice) with an increase of CdTe content in the solid solution. An important increase of microhardness value for (Pb,Cd)Te was directly confirmed by results of nanoindentation measurements performed for a few samples with various chemical composition.

DOI: 10.12693/APhysPolA.130.1245
PACS numbers: 62.20.-x, 63.20.D-