The Transport Properties of Quasi–One-Dimensional Ba3Co2O6(CO3)0.7
The Transport Properties of Quasi–One-Dimensional Ba3Co2O6(CO3)0.7
复制标题
DOI：
10.3389/fphy.2021.785801
复制
发表时间：
2021-12
期刊：
影响因子：
--
通讯作者：
Minna Chen;Jiangtao Wu;Qing Huang;J. Jiao;Z. Dun;Guohua Wang;Zhiwei Chen;G. Lin;Vasudevan Ra
中科院分区：
文献类型：
--
作者：
Minna Chen;Jiangtao Wu;Qing Huang;J. Jiao;Z. Dun;Guohua Wang;Zhiwei Chen;G. Lin;Vasudevan Ra
我们对准一维 Ba3Co2O6(CO3)0.7 单晶进行了弹性中子扩散、电输运、比热和导热系数的组合测量，以表征其输运特性。形成了多原子CO3 2− 的调制超结构，这不仅干扰了该化合物的电子特性，而且还降低了沿c 轴的热导率。此外，观察到大的磁熵有助于热传导。我们的研究揭示了结构效应和磁效应对其输运性能的影响，并提出通过建立具有导电离子基团的超晶格对热电材料进行理论改进。
We have performed combined elastic neutron diffuse, electrical transport, specific heat, and thermal conductivity measurements on the quasi–one-dimensional Ba3Co2O6(CO3)0.7 single crystal to characterize its transport properties. A modulated superstructure of polyatomic CO3 2− is formed, which not only interferes the electronic properties of this compound, but also reduces the thermal conductivity along the c-axis. Furthermore, a large magnetic entropy is observed to be contributed to the heat conduction. Our investigations reveal the influence of both structural and magnetic effects on its transport properties and suggest a theoretical improvement on the thermoelectric materials by building up superlattice with conducting ionic group.