Dramatically enhanced Seebeck coefficient in GeMnTe2-NaBiTe2 alloys by tuning the Spin's thermodynamic entropy
文献类型：期刊论文
| 作者 | Zhang, Yan; Xu, Liang; Liu, Guo-Qiang; Cai, Jianfeng; Yin, Yinong; Shi, Fanfan; Tan, Xiaojian; Jiang, Jun |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2021 |
| 卷号 | 23期号:33页码:17866-17872 |
| 关键词 | HIGH THERMOELECTRIC PERFORMANCE GETE CONVERGENCE POWER SUPPRESSION FIGURE ORIGIN BANDS |
| 英文摘要 | The emerging material GeMnTe2 provides a rare example to study the spin degree of freedom in thermoelectric transport, as it exhibits an anomalous Seebeck coefficient driven by the spin's thermodynamic entropy. This work presents an unconventional strategy to optimize the thermoelectric performance of GeMnTe2 by manipulating the spin degree of freedom. NaBiTe2 is alloyed into GeMnTe2 to disorder the spin orientation under finite temperature, and the obtained Seebeck coefficient is confirmed to be dramatically enhanced by more than 150%. The measurements of XRD and magnetic susceptibility indicate that the increased Seebeck coefficient is due to the increase of the spin's thermodynamic entropy. Finally, the maximum ZT of 1.06 at 820 K is obtained in Ge0.8Na0.1Bi0.1MnTe2. This work enriches the physical picture of spin degree of freedom in thermoelectric materials. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21703]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Jiang, J (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. 2.Liu, GQ 3.Jiang, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, Yan,Xu, Liang,Liu, Guo-Qiang,et al. Dramatically enhanced Seebeck coefficient in GeMnTe2-NaBiTe2 alloys by tuning the Spin's thermodynamic entropy[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2021,23(33):17866-17872. |
| APA | Zhang, Yan.,Xu, Liang.,Liu, Guo-Qiang.,Cai, Jianfeng.,Yin, Yinong.,...&Jiang, Jun.(2021).Dramatically enhanced Seebeck coefficient in GeMnTe2-NaBiTe2 alloys by tuning the Spin's thermodynamic entropy.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,23(33),17866-17872. |
| MLA | Zhang, Yan,et al."Dramatically enhanced Seebeck coefficient in GeMnTe2-NaBiTe2 alloys by tuning the Spin's thermodynamic entropy".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 23.33(2021):17866-17872. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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