Eur. Phys. J. Special Topics 153, 267-270 (2008)
https://doi.org/10.1140/epjst/e2008-00442-4

Study of Zn_1-x-yBe_xMn_ySe mixed crystals by photothermal method

¹ Institute of Physics, N. Copernicus University Toruń, ul. Grudziadzka 5, 87-100 Torun, Poland
² Department of Electronics and Computer Science, Technical University Koszalin, ul. Sniadeckich 2, 75-328 Koszalin, Poland

Abstract

In this paper a series of experimental piezoelectric spectra of Zn_1-x-yBe_xMn_ySe (y = 0.05, x = 0.05, 0.10, 0.15) crystals are presented and discussed. Three groups of samples exhibiting different composition with different surface treatment: grinded, polished and etched were prepared. The influence of a different surface treatment on piezoelectric amplitude spectra are discussed with in model taking into account the presence of defects located on the surfaces of the samples.