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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

不同掺杂对Ba3Y(BO3)3晶体的生长和相变的影响

潘尚可1， 陆 晟1， 丁栋舟1， 杨 帆1， 任国浩1， 王国富2   

  1. 1. 中国科学院 上海硅酸盐研究所， 上海 201800； 2. 中国科学院 福建物质结构研究所， 福州 350002
  • 收稿日期:2008-09-08 修回日期:2008-10-28 出版日期:2009-05-20 网络出版日期:2009-05-20

Effects of Different Dopants on the Growth and Phase Transition of Ba3Y(BO3)3 Crystal

PAN Shang-Ke1, LU Sheng1, DING Dong-Zhou1, YANG Fan1, REN Guo-Hao1, WANG Guo-Fu2   

  1. 1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
  • Received:2008-09-08 Revised:2008-10-28 Published:2009-05-20 Online:2009-05-20

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摘要： 结合X射线粉末衍射和差示扫描量热法，系统研究了不同格位上的掺杂对Ba3Y(BO3)3晶体的生长和相变的影响. 研究发现，相同掺杂浓度10at%时，掺Nd3+的α-Ba3Y(BO3)3晶体的相变温度（1099.6℃）比掺Yb3+的晶体的相变温度（1145.3℃）低；且随着掺Nd3+浓度的降低，晶体的相变温度升高，晶体在降温过程中更容易发生相变. 在晶体中掺入Sr2+离子，可以有效提高Yb3+∶α-Ba3Y(BO3)3晶体的稳定性. 随着Sr2+掺入浓度的增加，晶体的熔点升高，相变温度降低. 当Sr2+掺杂浓度为16at%时，晶体的相变峰消失；当Sr2+掺杂浓度分别为5at%、10at%时，晶体仍然发生相变.

关键词: 激光晶体, 相变, 晶体稳定性, 提拉法, 硼酸盐

Abstract: Phase transition is harmful to the quality of Re doped Ba3Y(BO3)3 crystals. In order to obtain high quality Yb3+∶α-Ba3Y(BO3)3 crystal, Sr2+ ions co-doped Yb3+∶α-Ba3Y(BO3)3 crystal was grown with CZ method. Effect of various dopants and substitution sites on the growth and phase transition of Ba3Y(BO3)3 crystal were investigated. The phase transition temperature of 10at% Nd3+∶α-Ba3Y(BO3)3 crystal is 1099.6℃, which is lower than that of 10at% Yb3+∶α-Ba3Y(BO3)3 crystal (1145.3℃). Furthermore, the phase transition temperature of Nd3+∶α-Ba3Y(BO3)3 crystals is increased with the increase of the contentration of Nd3+ ions. For 10at%Yb3+∶α-Ba3Y(BO3)3 crystal, the melting point is increased and the phase transition temperature is decreased with the increase of the concentration of the codoped Sr2+ ions. The endothermic peak of phase transition disappears when the concentration of Sr2+ ions reaches 16at%, yet phase transition still exists with Sr2+ concentration of 5at% or 10at%.

Key words: laser crystal, phase transition, stability of crystals, czochralski technique, borate

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