Ukrainian Journal of Physical Optics 

Volume 21, Issue 4, 2020
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Faraday effect in TlIn(S1–xSex)2 solid solutions (x = 0, 0.02, 0.06, 0.10, 0.15 and 0.25)

1Adamenko D., 1Krupych O., 1Kostyrko M., 1Vasylkiv Yu., 1,2Gomonnai O., 2,3Gomonnai A. and 1Vlokh R.

1Vlokh Institute of Physical Optics, 23 Dragomanov Street, 79005 Lviv, Ukraine
2Uzhhorod National University, 46 Pidhirna Street, 88000 Uzhhorod, Ukraine
3Institute of Electron Physics, Ukrainian National Academy of Sciences, 21 Universytetska Street, 88017 Uzhhorod, Ukraine

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Abstract. We have studied experimentally the Faraday effect in monoclinic 
TlIn(S1-xSex)2 solid solutions with selenium concentrations x changing in the range 0 ≤ x ≤ 0.25. The Verdet constant VF and the effective Faraday coefficient F33  are determined at the light wavelength λ = 632.8 nm under normal conditions. We show that the both coefficients tend to increase when the Se concentration increases from 0 to 0.25. This behaviour is explained by dispersion of the Faraday coefficients and a shift of the absorption edge towards long-wavelength spectral range, which occurs with increasing amount of selenium

Keywords: Faraday effect, Verdet constant, TlIn(S1-xSex)2 solid solutions

UDC: 537.632.4
Ukr. J. Phys. Opt. 21 178-183
doi: 10.3116/16091833/21/4/178/2020
Received: 11.08.2020

Анотація.  ВЕкспериментально вивчено ефект Фарадея в моноклинних твердих розчинах TlIn(S1-xSex)2  із концентраціями селену x у межах 0 ≤ x ≤ 0,25. На довжині хвилі світла λ = 632,8 нм за нормальних умов визначено постійну Верде VF і ефективний коефіцієнт Фарадея  F33. Показано, що обидва коефіцієнти мають тенденцію до збільшення за умови зростання концентрації Se від 0 до 0,25. Така поведінка пояснюється дисперсією коефіцієнтів Фарадея та зсувом краю поглинання в бік довгохвильового спектрального діапазону, який відбувається зі зростанням вмісту селену.
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