Phase diagram of Er-Sn-Te system for diluted magnetic semiconductor developments
来源期刊：JOURNAL OF RARE EARTHS2013年第8期
论文作者：张广华 湛永钟 李春流
文章页码：800 - 803
摘 要：Phase diagrams of the RE （rare earth）-IV-VI systems are very important for the design of rare earth doped diluted magnetic semiconductors （DMSs）, but related information is very limited. In this work, the phase equilibria of the Er-Sn-Te system in whole compositional range at room temperature were investigated mainly by means of X-ray powder diffraction （XRD） and differential thermal analysis （DTA）. The existences of 9 binary compounds, i.e., SnTe, ErTe3 , Er2Te3 , ErTe, Er5Sn3 , Er11Sn10 , ErSn2 , Er3Sn7 and Er2Sn5 were confirmed. The phase diagram consisted of 12 single-phase regions, 21 binary phase regions and 10 ternary phase regions. The maximum solid solubility of Er in SnTe was determined to be about 7.5 at.%, none of the other phases in this system revealed a remarkable homogeneity range at room temperature. No ternary compound was found in this work.
张广华，湛永钟，李春流
College of Materials Science and Engineering, Guangxi University
摘 要：Phase diagrams of the RE （rare earth）-IV-VI systems are very important for the design of rare earth doped diluted magnetic semiconductors （DMSs）, but related information is very limited. In this work, the phase equilibria of the Er-Sn-Te system in whole compositional range at room temperature were investigated mainly by means of X-ray powder diffraction （XRD） and differential thermal analysis （DTA）. The existences of 9 binary compounds, i.e., SnTe, ErTe3 , Er2Te3 , ErTe, Er5Sn3 , Er11Sn10 , ErSn2 , Er3Sn7 and Er2Sn5 were confirmed. The phase diagram consisted of 12 single-phase regions, 21 binary phase regions and 10 ternary phase regions. The maximum solid solubility of Er in SnTe was determined to be about 7.5 at.%, none of the other phases in this system revealed a remarkable homogeneity range at room temperature. No ternary compound was found in this work.
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