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材料研究学报  2010, Vol. 24 Issue (6): 615-618    
  研究论文 本期目录 | 过刊浏览 |
Ba0.32Co4Sb12-xTex的高压合成及其电学性质
柳洋1, 任国仲1, 宿太超2, 马红安2, 邓乐2, 姜一平2, 郑世钊2, 林乐静2, 秦丙克2, 贾晓鹏2
1.湘潭大学材料与光电物理学院 湘潭 411105
2.吉林大学超硬材料国家重点实验室 长春 1300123
HPHT Synthesis and Electric Properties of Ba0.32Co4Sb12−xTex Skutterudites
LIU Yang, REN Guozhong, SU Taichao, MA Hong'an,  DE Le, JIANG Yiping, ZHENG Shizhao, LIN Lejing, QIN Bingke, JIA Xiaopeng
1.Faculty of Materials, Optoelectronics and Physics, XiangTan University, Xiangtan 411105
2.National Lab of Superhard Materials, Jinlin University, Changchun 130012
引用本文:

柳洋 任国仲 宿太超 马红安 邓乐 姜一平 郑世钊 林乐静 秦丙克 贾晓鹏. Ba0.32Co4Sb12-xTex的高压合成及其电学性质[J]. 材料研究学报, 2010, 24(6): 615-618.
, . HPHT Synthesis and Electric Properties of Ba0.32Co4Sb12−xTex Skutterudites[J]. Chin J Mater Res, 2010, 24(6): 615-618.

全文: PDF(748 KB)  
摘要: 在高温高压下合成方钴矿结构热电材料Ba0.32Co4Sb12-xTex(0.1≤ x≤0.9), 测试了样品的微观结构和室温电学性质。结果表明: Ba填充Te置换型方钴矿Ba0.32Co4Sb12-xTex为n型半导体; 在不同压力下, 随着Te填充分数的增加, Seebeck系数的绝对值和电阻率均呈降低趋势, 功率因子显著提高。在1.5 GPa、900 K条件下合成的Ba0.32Co4Sb11.9Te0.1化合物功率因子达到最大值(9.7 μWcm-1 K-2)。
关键词 无机非金属材料热电材料方钴矿功率因子高温高压    
Abstract:Polycrystalline skutterudites Ba0.32Co4Sb12−xTex (nominally x from 0.1 to 0.9) were successfully synthesized by high pressure and high temperature (HPHT) method. The XRD results indicate that all samples have the crystal structure of single phase CoSb3. The dependence of electric transport properties for Ba0.32Co4Sb12−xTex samples on Te filling fraction and pressure has been investigated at room temperature. All samples show n-type conduction.The absolute value of Seebeck coefficient and the electrical resistivity decrease with the increasing of Te content. The maximum power factor (9.7 μWcm−1K−2)is obtained for Ba0.32Co4Sb11.9Te0.1 synthesized at 1.5 GPa and 900 K.
Key wordsinorganic non-metallic materials    thermoelectic materials    skutterudites    power factor    HPHT
收稿日期: 2010-03-25     
ZTFLH: 

O521

 
基金资助:

国家自然科学基金50731006和国家青年科学基金50801030项目资助。

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