作者:O. Yu. Pankratova、R. A. Zvinchuk、A. V. Suvorov、T. Hatanpaa、V. I. Kozlov、M. Leskela
DOI:10.1007/s11176-005-0361-4
日期:2005.7
Chalcogenides TiSe1.60−x Tex (0 ≤ x ≤ 1.60), forming a continuous series of hexagonal solid solutions, were prepared by the direct ampule procedure. The thermal decomposition of TiSe1.60−x Tex was studied for the samples with x = 0, 0.16, 0.80, 1.44, and 1.60 in Ar and N2 atmospheres in the course of heating from 25 to 1000°C. The selenide undergoes no weight loss under Ar, in contrast to the telluride which disproportionates and loses weight owing to the formation of volatile TiTe2. At high temperatures, tellurides are more sensitive than selenides to the presence of nitrogen: The disproportionation is accompanied by the reaction of TiTe2 with N2, yielding low-volatile titanium nitride and free tellurium. Titanium selenide and telluride as components of the solid solutions behave similarly to the corresponding individual chalcogenides.
通过直接安瓿法制备了钙钛矿石 TiSe1.60-x Tex(0 ≤ x ≤ 1.60),形成了一系列连续的六方固溶体。研究了 x = 0、0.16、0.80、1.44 和 1.60 的 TiSe1.60-x Tex 样品在 Ar 和 N2 大气中从 25°C 加热到 1000°C 的热分解过程。硒化物在氩气环境下没有重量损失,相反,碲化物由于形成挥发性 TiTe2 而比例失调,重量减少。在高温下,碲化物比硒化物对氮的存在更敏感:在发生歧化的同时,TiTe2 会与 N2 发生反应,生成低挥发性的氮化钛和游离碲。作为固溶体成分的硒化钛和碲化钛的表现与相应的单个铬化钛类似。