J. Phys. IV France
Volume 109, June 2003
Page(s) 123 - 126

J. Phys. IV France
109 (2003) 123
DOI: 10.1051/jp4:20030660

Photoacoustic study of Cd 1-x-yBe xMn yTe mixed crystals

J. Zakrzewski, F. Firszt, S. Legowski, H. Meczynska, A. Marasek and M. Pawlak

Instytut Fizyki, Uniwersytet Mikolaja Kopernika, Ul. Grudziadzka 5-7, 87-100 Torun, Poland

Quaternary diluted niagnetic semiconductors Cd 1-x-yBe xMn yTe obtained by Bridgman method for x=0.01 and $0\leq y\leq 0.15$ were investigated. The photoacoustic spectroscopy with a piezoelectric transducer was employed to evaluate the energy gaps of Cd 1-x-yBe xMn yTe bulk mixed crystals at room temperature. The increase of the energy gap with increasing x value has been observed. Characteristic features of amplitude and phase photoacoustic spectra were discussed.

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