Polycrystal Synthesis and Single Crystal Growth of CdGeAs2

doi:10.3724/SP.J.1077.2010.01195

Journal of Inorganic Materials ›› 2010, Vol. 25 ›› Issue (11): 1195-1198.DOI: 10.3724/SP.J.1077.2010.01195

• Research Paper • Previous Articles Next Articles

Polycrystal Synthesis and Single Crystal Growth of CdGeAs₂

HE Zhi-Yu, ZHAO Bei-Jun, ZHU Shi-Fu, CHEN Bao-Jun, LI Jia-Wei, ZHANG Yi, DU Wen-Juan

(School of Materials Science and Engineering, Sichuan University, Chengdu 610064, China)

Received:2010-04-17 Revised:2010-05-20 Published:2010-11-20 Online:2010-11-01
Supported by:
National Natural Science Foundation of China (50732005); 863 Program(2007AA03Z443)

Abstract

Abstract: CdGeAs₂ polycrystal was synthesized by the raw materials of 99.9999% Cd, Ge and As in stoichiometric weights with proper excess of Cd and As through mechanical and temperature oscillation of melt(MTOM). An integral, crack free CdGeAs₂ single crystal with size of 15 mm×40 mm was obtained by modified vertical descending cubic technique. The CdGeAs₂ polycrystal and as-grown crystals were characterized by X-ray diffraction and infrared spectroscopy. XRD riteveld analysis indicates that the synthetic product is high-purity CdGeAs₂polycrystal in chalcopyrite structure, the lattice constants of a and c are 0.5946nm and 1.1217nm, respectively. The as-grown crystal is integrated in structure and crystallized well. It is also found that the cleavage plane of the crystal is (101). CdGeAs₂ wafer with 1.0 mm thickness is transparent in range of 589-4250cm^-1, and the band width is calculated to be 0.67eV.

Key words: CdGeAs₂, synthesis, single crystal growth, XRD analysis, IR transmission spectrum

CLC Number:

O782

HE Zhi-Yu, ZHAO Bei-Jun, ZHU Shi-Fu, CHEN Bao-Jun, LI Jia-Wei, ZHANG Yi, DU Wen-Juan. Polycrystal Synthesis and Single Crystal Growth of CdGeAs₂[J]. Journal of Inorganic Materials, 2010, 25(11): 1195-1198.

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Polycrystal Synthesis and Single Crystal Growth of CdGeAs₂

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