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《Journal of Functional Materials》 2007-11
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Purification and stoichiometric concentration control of ZnSe polycrystalline by zone sublimation method

LIU Chang-you1,JIE Wan-qi1,HE Ke2(1.College of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China;2.Laboratory of Mineralization and Its Dynamics,Chang'an University,Xi'an 710064,China)  
The zone sublimation method was applied to pre-treat ZnSe polycrystalline synthesized from two elements.ICP-MS analysis results show that the percentage of impurities removed in high-purity source materials is only about 10%.XRD and EDS results display that the composition of polycrystalline is adjusted effectively after treatment.The pretreated polycrystalline with the composition approaching to that of single crystals is applicable for high quality single crystal growth.It is pointed out that the main purpose of the pretreatment of high-purity materials using zone sublimation method should be to adjust the composition to the defined point-the concrete non-stoichiometric composition.
【Fund】: 国家自然科学基金资助项目(50336040)
【CateGory Index】: O614.241
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