ACTA

Anisotropy of Young's Modulus and Microhardness of PbTe

E. Łusakowska^a, S. Adamiak^b, R. Minikayev^a, P. Skupiński^a, A. Szczerbakow^a, W. Szuszkiewicz^{a, b}
^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

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Nanoindentation measurements were performed for a single PbTe crystal grown by self-selecting vapour growth method and characterized by X-ray diffraction. The microhardness and Young's modulus were determined for a few loads applied along the [001], [011] and [111] high symmetry directions for carefully oriented, 2 mm thick crystal plates. An anisotropy of two parameters has been suggested and compared with available literature data. The present results qualitatively confirm the theoretical predictions for a rock salt type crystal (PbS). The microhardness anisotropy value is in an agreement with recently determined, relevant value for (Pb,Cd)Te solid solution.

DOI:10.12693/APhysPolA.134.941
PACS numbers: 62.20.-x