Crystal growth of the CdGa2(1-x)Cr2xSe4 compounds by chemical transport method

✍ Scribed by V. Sagredo; L. M. de Chalbaud

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 123 KB
• Volume: 39
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200410270

✦ Synopsis

Single crystals of CdGa 2(1-x) Cr 2x Se 4 compounds for 0 ≤ x ≤ 1 have been grown by using the chemical vapor transport technique in a closed system. The transporting agent was CdCl 2 in a proportion of 0.75 mg/cc of capsule. The starting material was previously synthetized. The structural characterization on the crystals were done by powder x-ray diffraction studies. The results show three different phases for various Cr concentration ranges: spinel structure for x ≥ 0.7, rombohedral for 0.6 ≥ x ≥ 0.5 and tetragonal for 0.4 ≥ x ≥ 0. That is, the chromium dilution in the CdCr 2 Se 4 compound by Ga atoms produces very significant changes in the structural atomic arrangement