Synthesis and investigation of the structure, thermal and electrical properties of new Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2) molybdates

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Solid State Sciences Pub Date : 2024-10-17 DOI:10.1016/j.solidstatesciences.2024.107725

Victoria G. Grossman , Maxim S. Molokeev , Bair G. Bazarov

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Abstract

The traditional solid-state synthesizing method was employed to prepare Tl_5-xK_xLuZr(MoO₄)₆ (x = 0; 0.1; 0.2; 1; 2) ceramics. Structural characterization was performed through the Rietveld method on the X-ray powder diffraction data. The unit cell parameters are defined for Tl_5-xK_xLuZr(MoO₄)₆ (x = 0; 0.1; 0.2; 1; 2). Impedance spectra were measured at temperatures ranging from 300 to 800 K, covering a frequency range of 1 Hz to 1 MHz. The results show that the electrical conductivity decreases with an incrementing in the x value in the range of x = 0.1–2.0. Tl_4.9K_0.1LuZr(MoO₄)₆ has the best ionic conductivity of this series of molybdates (1.31 × 10⁻³ S cm⁻¹₎, and Tl₅LuZr(MoO₄)₆ has the lowest conductivity (5.51 × 10⁻⁴ S cm⁻¹₎. Activation energy was found out to decrease from 1.32 eV for Tl₅LuZr(MoO₄)₆ to 0.92 eV for Tl_4.9K_0.1LuZr(MoO₄)_6.

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新型 Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2) 钼酸盐的合成及其结构、热学和电学特性研究

采用传统固态合成法制备了 Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2) 陶瓷。通过对 X 射线粉末衍射数据的里特维尔德法进行了结构表征。确定了 Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2) 的单胞参数。在 300 至 800 K 的温度范围内测量了阻抗谱，频率范围为 1 Hz 至 1 MHz。结果表明，在 x = 0.1-2.0 的范围内，电导率随着 x 值的增加而降低。在这一系列钼酸盐中，Tl4.9K0.1LuZr(MoO4)6 的离子导电率最好（1.31 × 10-3 S cm-1），而 Tl5LuZr(MoO4)6 的导电率最低（5.51 × 10-4 S cm-1）。活化能从 Tl5LuZr(MoO4)6 的 1.32 eV 下降到 Tl4.9K0.1LuZr(MoO4)6 的 0.92 eV。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.