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Adiabatic elastic moduli in ZnSe : Mn |
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| Authors: | V. V. Gudkov A. T. Lonchakov V. I. Sokolov I. V. Zhevstovskikh V. T. Surikov |
| Affiliation: | (1) Russian State Pedagogical University, ul. Mashinostroiteleĭ 11, Yekaterinburg, 620012, Russia;(2) Ural State Technical University, ul. Mira 19, Yekaterinburg, 620002, Russia;(3) Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. Sof’i Kovalevskoĭ 18, Yekaterinburg, 620041, Russia;(4) Institute of Solid State Chemistry, Ural Division, Russian Academy of Sciences, ul. Pervomaĭskaya 91, Yekaterinburg, 620041, Russia |
| Abstract: | The temperature dependences of the elastic moduli C 44 (C 11 ? C 12)/2 and C l = (C 11 + C 12 + 2C 44)/2 of ZnSe : V2+ (impurity concentration, 6 × 1018 cm?3) and ZnSe : Mn2+ (9.4 × 1020 cm?3) are measured in the temperature range 1.4–100.0 K at frequencies of 52 and 156 MHz. The temperature dependences of the adiabatic elastic moduli are derived. It is established that softening of the symmetry modules is observed only in the crystal with an impurity having orbitally degenerate states. |
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