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http://dx.doi.org/10.4283/JKMS.2006.16.3.178

Structural, Optical, and Magnetic Properties of Si1-xMnxTe1.5 Single Crystals  

Hwang, Young-Hun (Department of Physics, University of Ulsan)
Um, Young-Ho (Department of Physics, University of Ulsan)
Cho, Sung-Lae (Department of Physics, University of Ulsan)
Publication Information
Journal of the Korean Magnetics Society / v.16, no.3, 2006 , pp. 178-181 More about this Journal
Abstract
We have investigated the Mn concentration-dependent structural, optical, magnetic properties in IV-VI diluted magnetic semiconductor $Si_{1-x}Mn_xTe_{1.5} $ crystals prepared by the vertical Bridgman technique. X-ray studies showed the single crystalline hexagonal crystal structure. From the optical absorption measurements energy band gap were found to decreases with increasing x and temperature. From the magnetization measurements the samples had ferromagnetic ordering with Curie temperature $T_C$ about 80 K. With increasing Mn concentration, the average magnetic moments per Mn atom determined from the saturated magnetization increased.
Keywords
diluted magnetic semiconductor; vertical bridgman method; SiMnTe;
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