Reversible Property Switching, Thermoelectric Performance, and d10−d10 Interactions in Ag5Te2Cl†
Reversible Property Switching, Thermoelectric Performance, and d10−d10 Interactions in Ag5Te2Cl†
复制标题
Ag5Te2Cl 中的可逆特性转换、热电性能和 d10−d10 相互作用†
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
R. Weihrich
中科院分区：
文献类型：
--
作者：
T. Nilges;O. Osters;M. Bawohl;J. Bobet;B. Chevalier;R. Decourt;R. Weihrich
进行热电和相分析测量来研究三晶型 Ag5Te2Cl 的物理性质。该材料是一种混合电子/银离子导体，在 334 K 的银有序/无序相变过程中具有剧烈的性能变化。该转变的特点是总电导率跃升 2 个数量级，直接影响电性能和热电性能。银离子沿着晶体 c 轴排列成明确的链，其特征是一组未完全占据的位点。热容测量显示出很大的影响，而热电势和热扩散率在转变温度下显着下降。转变后，无序银子结构内发生有吸引力的 d10−d10 相互作用，影响加热时的 c 晶格参数。由于这种相互作用，可以观察到电子结构和热电性质的调制，这已被研究......
Thermoelectric and phase analytical measurements were performed to investigate the physical properties of trimorphic Ag5Te2Cl. The material is a mixed electron/silver ion conductor featuring drastic property changes during a silver order/disorder phase transition at 334 K. The transition is characterized by a jump in the total electric conductivity by 2 orders of magnitude directly affecting the electric and thermoelectric properties. Silver ions are arranged in well-defined strands along the crystallographic c-axis characterized by a set of not fully occupied sites. Heat capacity measurements show a large effect, whereas the thermopower and thermal diffusivity drop significantly at the temperature of transition. Right after the transition, an attractive d10−d10 interaction within the disordered silver substructure occurs affecting the c-lattice parameter upon heating. Due to this interaction a modulation of the electronic structure and the thermoelectric properties can be observed which have been investi...