In this work, we present and discuss far-infrared (FIR) reflectivity spectra obtained using infrared synchrotron radiation in different ZnxCdyHg1-x-yTe (ZMCT) quaternary alloys. Reffectivity spectra were measured at the DAFNE-light facility of the INFN-LNF with samples placed under vacuum inside a BRUKER Equinox 55 interferometer. Samples were cooled in a helium cryostat in a temperature range from about 20 K to 300 K. The obtained spectra were standard Kramers-Kronig transformed to obtain the imaginary part of the dielectric functions, then unfolded into a set of Lorentzian oscillators. The fitting procedure yields a total of 21 lines in the ZnxCdyHg1-x-yTe reflection spectra of these quaternary alloys. Sixteen lines have been correlated to ternary spectral contributions of the different components: CdHgTe, ZnHgTe and CdZnTe (with a precision of +/- 1.5cm(-1)). In the wave number range between 108 cm(-1) and 190 cm(-1) the oscillator frequencies have been attributed to the spectral lines of these quaternary alloys. (c) 2006 Elsevier B.V. All rights reserved.

First interpretation of phonon spectra of quaternary solid solutions using fine structure far-IR reflectivity by synchrotron radiation / E. M., Sheregii; J., Polit; J., Cebulski; P., Sliz; A., Kisiel; V., Robouch; M., Piccinini; A., Marcelli; CESTELLI GUIDI, Mariangela; Calvani, Paolo. - In: INFRARED PHYSICS & TECHNOLOGY. - ISSN 1350-4495. - 49:1-2(2006), pp. 13-18. (Intervento presentato al convegno International Workshop on Infrared Microscopy and Spectroscopy with Accelerator-Based Sources (WIRMS 2005) tenutosi a Rathen, GERMANY nel JUN 26-30, 2005) [10.1016/j.infrared.2006.01.019].

First interpretation of phonon spectra of quaternary solid solutions using fine structure far-IR reflectivity by synchrotron radiation

CESTELLI GUIDI, MARIANGELA;CALVANI, Paolo
2006

Abstract

In this work, we present and discuss far-infrared (FIR) reflectivity spectra obtained using infrared synchrotron radiation in different ZnxCdyHg1-x-yTe (ZMCT) quaternary alloys. Reffectivity spectra were measured at the DAFNE-light facility of the INFN-LNF with samples placed under vacuum inside a BRUKER Equinox 55 interferometer. Samples were cooled in a helium cryostat in a temperature range from about 20 K to 300 K. The obtained spectra were standard Kramers-Kronig transformed to obtain the imaginary part of the dielectric functions, then unfolded into a set of Lorentzian oscillators. The fitting procedure yields a total of 21 lines in the ZnxCdyHg1-x-yTe reflection spectra of these quaternary alloys. Sixteen lines have been correlated to ternary spectral contributions of the different components: CdHgTe, ZnHgTe and CdZnTe (with a precision of +/- 1.5cm(-1)). In the wave number range between 108 cm(-1) and 190 cm(-1) the oscillator frequencies have been attributed to the spectral lines of these quaternary alloys. (c) 2006 Elsevier B.V. All rights reserved.
2006
01 Pubblicazione su rivista::01a Articolo in rivista
First interpretation of phonon spectra of quaternary solid solutions using fine structure far-IR reflectivity by synchrotron radiation / E. M., Sheregii; J., Polit; J., Cebulski; P., Sliz; A., Kisiel; V., Robouch; M., Piccinini; A., Marcelli; CESTELLI GUIDI, Mariangela; Calvani, Paolo. - In: INFRARED PHYSICS & TECHNOLOGY. - ISSN 1350-4495. - 49:1-2(2006), pp. 13-18. (Intervento presentato al convegno International Workshop on Infrared Microscopy and Spectroscopy with Accelerator-Based Sources (WIRMS 2005) tenutosi a Rathen, GERMANY nel JUN 26-30, 2005) [10.1016/j.infrared.2006.01.019].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/32503
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