Grossman Victoria, Adichtchev Sergey V, Atuchin Victor V, Bazarov Bair G, Bazarova Jibzema G, Kuratieva Natalia, Oreshonkov Aleksandr S, Pervukhina Natalia V, Surovtsev Nikolay V
Laboratory of Oxide Systems, Baikal Institute of Nature Management, SB RAS, Ulan-Ude 670047, Russia.
Laboratory of Condensed Matter Spectroscopy, Institute of Automation and Electrometry, SB RAS, Novosibirsk 630090, Russia.
Inorg Chem. 2020 Sep 8;59(17):12681-12689. doi: 10.1021/acs.inorgchem.0c01762. Epub 2020 Aug 12.
The phase relations in the subsolidus region of the TlMoO-Bi(MoO)-Hf(MoO) system were studied with the "intersecting cuts" method. The formation of the novel ternary molybdate TlBiHf(MoO) is found in this ternary system. The compound has a phase transition at = 731 K (Δ = -3.15 J/g) and melts at = 871 K (Δ = -41.71 J/g), as determined by a thermal analysis. TlBiHf(MoO) single crystals were obtained by the spontaneous nucleation method. The crystal structure of TlBiHf(MoO) was revealed by structure analysis methods. This molybdate crystallizes in the trigonal space group 3̅ with the unit cell parameters = 10.6801(4) Å, = 38.5518(14) Å, = 3808.3(2) Å, and = 6. The vibrational characteristics of TlBiHf(MoO) were determined by Raman spectroscopy. The TlBiHf(MoO) conductivity was measured at frequencies of 0.1, 1.0, and 10 kHz in the temperature range of 293-773 K; in this temperature range, the conductivity level was 10-10 S/cm.
采用“相交截面”法研究了TlMoO-Bi(MoO)-Hf(MoO)体系亚固相区的相关系。在该三元体系中发现了新型三元钼酸盐TlBiHf(MoO)。通过热分析确定，该化合物在731 K时发生相变（Δ = -3.15 J/g），在871 K时熔化（Δ = -41.71 J/g）。通过自发成核法获得了TlBiHf(MoO)单晶。用结构分析方法揭示了TlBiHf(MoO)的晶体结构。该钼酸盐以三方空间群3̅结晶，晶胞参数为 = 10.6801(4) Å， = 38.5518(14) Å， = 3808.3(2) Å， = 6。通过拉曼光谱确定了TlBiHf(MoO)的振动特性。在293 - 773 K温度范围内，在0.1、1.0和10 kHz频率下测量了TlBiHf(MoO)的电导率；在此温度范围内，电导率水平为10 - 10 S/cm。
