| Ba0.32Co4Sb12-xTex的高压合成及其电学性质 |
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| 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). |
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| 作者姓名： | 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 |
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| 作者单位： | 湘潭大学材料与光电物理学院,湘潭,411105;吉林大学超硬材料国家重点实验室,长春,1300123 |
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| 基金项目： | 国家自然科学基金50731006; 国家青年科学基金50801030项目资助~~ |
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| 摘 要： | 在高温高压下合成方钴矿结构热电材料Ba_(0.32)Co_4Sb_(12-x)Te_x(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Ba_(0.32)Co_4Sb_(12-x)Te_x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Ba_(0.32)Co_4Sb_(11.9)Te_(0.1)化合物功率因子达到最大值(9.7μWcm~(-1)K~(-2))。
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| 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 |
HPHT Synthesis and Electric Properties of Ba_(0.32)Co_4Sb_(12-x)T_x Skutterudites |
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| LIU Yang REN Guozhong SU Taichao MA Hong'an DE Le JIANG Yiping ZHENG Shizhao LIN Lejing QIN Bingke JIA Xiaopeng .Faculty of Materials,Optoelectronics , Physics,XiangTan University,Xiangtan .National Lab of Superhard Materials,Jinlin University,Changchun.HPHT Synthesis and Electric Properties of Ba_(0.32)Co_4Sb_(12-x)T_x Skutterudites[J].Chinese Journal of Materials Research,2010,24(6). |
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| Authors: | LIU Yang REN Guozhong SU Taichao MA Hong'an DE Le JIANG Yiping ZHENG Shizhao LIN Lejing QIN Bingke JIA Xiaopeng Faculty of Materials Optoelectronics Physics XiangTan University Xiangtan National Lab of Superhard Materials Jinlin University Changchun |
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| Affiliation: | LIU Yang~1 REN Guozhong~(1**) SU Taichao~2 MA Hong'an~2 DE Le~2 JIANG Yiping~2 ZHENG Shizhao~2 LIN Lejing~1 QIN Bingke~2 JIA Xiaopeng~2 1.Faculty of Materials,Optoelectronics , Physics,XiangTan University,Xiangtan 411105 2.National Lab of Superhard Materials,Jinlin University,Changchun 130012 |
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| Abstract: | Polycrystalline skutterudites Ba_(0.32)Co_4Sb_(12-x)Te_x(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 CoSb_3.The dependence of electric transport properties for Ba_(0.32)Co_4Sb_(12-x)Te_x 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 ele... |
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| Keywords: | inorganic non-metallic materials thermoelectic materials skutterudites power factor HPHT |
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