caa a22 4500 463227662 CHVBK 20180405153232.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10853-007-2087-7 doi (NATIONALLICENCE)springer-10.1007/s10853-007-2087-7 Belka Radosław Division of Telecommunications and Photonics, Kielce University of Technology, Al. 1000-lecia P.P.7, 25-314, Kielce, Poland aut The influence of ions' substitution on the optical properties of A2MX4 crystals [Elektronische Daten] [Radosław Belka] In this article, results based on the research of optical properties of A2MX4 type crystals (A—organic cation, M—metal, X—halogen) composed of different chemical elements are presented. These crystals were grown by the evaporation method from water solutions of AX and MX2 compounds in an appropriate molar ratio. The conducted X-ray investigations show a different crystal structures, ranging from tetragonal to triclinic ones. Also, the structure of the ion complex for Cu2+ crystals varied. The investigation showed both CuCl 4 2− tetrahedral and CuCl4·2H2O2− octahedral deformed complexes in investigated crystals. Additionally, the optical spectra of the samples were measured in the range of 250-850nm. Based on the crystal field theory, it was shown that the shape of absorption spectra and colour of the crystals depend on the distortion of these complexes. Springer Science+Business Media, LLC, 2007 Journal of Materials Science Springer US; http://www.springer-ny.com 42/24(2007-12-01), 10090-10097 0022-2461 42:24<10090 2007 42 10853 https://doi.org/10.1007/s10853-007-2087-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-2087-7 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Belka Radosław Division of Telecommunications and Photonics, Kielce University of Technology, Al. 1000-lecia P.P.7, 25-314, Kielce, Poland aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/24(2007-12-01), 10090-10097 0022-2461 42:24<10090 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer