论文标题
超级磁和金属状Ru2tige：一种好的热电材料
Superparamagnetic and metal-like Ru2TiGe: a propitious thermoelectric material
论文作者
论文摘要
我们报告了一项研究的研究，磁性，热容量和摩擦合金RU2TIGE的热电特性。磁性测量结果表明，在较高的温度下，磁磁和Pauli parmagnetic的贡献主导了磁性行为，而在较低温度（t <= 20 K）下，观察到集群之间的超帕磁相互作用。在较低温度下的电阻率行为中，这种磁缺陷的影响也很明显。 Though the temperature dependence of resistivity exhibits a metal-like nature, the large value of Seebeck coefficient leads to an appreciable power factor of the order of 1 mW/mK2 at 300 K. Large power factor as well as low thermal conductivity results in a value of ZT = 0.025 at 390 K for Ru2TiGe that is orders of magnitude higher than that of the other pure Heusler alloys and point towards its high potential for practical thermoelectric申请。
We report a study of structural, magnetic, heat capacity and thermoelectric properties of a Rubased Heusler alloy, Ru2TiGe. The magnetic measurements reveal that at higher temperatures, diamagnetic and Pauli paramagnetic contributions dominate the magnetic behaviour whereas, at lower temperatures (T<= 20 K), superparamagnetic interaction among clusters is observed. Effect of such magnetic defects is also evident in the electrical resistivity behaviour at lower temperatures. Though the temperature dependence of resistivity exhibits a metal-like nature, the large value of Seebeck coefficient leads to an appreciable power factor of the order of 1 mW/mK2 at 300 K. Large power factor as well as low thermal conductivity results in a value of ZT = 0.025 at 390 K for Ru2TiGe that is orders of magnitude higher than that of the other pure Heusler alloys and point towards its high potential for practical thermoelectric applications.
