Nd^(3+):Gd_3Ga_5O_(12)晶体的热物理性能研究  

Thermophysical Properties of Nd^(3+):Gd_3Ga_5O_(12) Crystal

作　　者：王召兵[1] 蔡岸[2] 奚同庚[2] 张庆礼[1] 孙敦陆[1] 殷绍唐[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所 [2]中国科学院上海硅酸盐研究所,上海200050

出　　处：《无机材料学报》2007年第1期170-172,共3页Journal of Inorganic Materials

基　　金：国家自然科学基金(60478025)

摘　　要：提拉法生长了Nd3+:Gd3Ga5O12(Nd:GGG)单晶,用差示扫描量热法(DSC)和激光脉冲法分别测量了Nd:GGG激光晶体的比热和热扩散系数,计算得到晶体的导热系数,与用PPMS测量得到的导热系数相吻合．实验结果表明:Nd:GGG激光晶体具有较大的比热和导热系数,具有良好的热物理性能;Nd:GGG晶体的热扩散系数和导热系数随着温度的升高而减小;计算得到晶体的德拜温度为711K．Nd3＋：GdaGa5O12 （Nd：GGG） single crystals were grown by the Czochraski method. Specific heat and thermal diffusivity of Nd：GGG single crystals were measured with differential scanning calorimetry and laser flash methods, respectively. The thermal conductivity of Nd：GGG was calculated, and consistent with the thermal conductivity measured with PPMS. The experimental results indicate that Nd：GGG single crystal has good thermal properties such as high specific heat and thermal conductivity. Thermal diffusivity and thermal conductivity of Nd：GGG single crystal vary with temperature. The higher temperature is, the lower thermal diffusivity and the thermal conductivity are. The Debye temperature of Nd：GGG is 711K.

关 键 词：Nd:GGG晶体 比热 热扩散系数 导热系数 

分 类 号：O782[理学—晶体学]