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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Oxyselenide ： ウィキペディア英語版 Oxyselenide Oxyselenides are a group of chemical compounds that contain oxygen and selenium atoms (Figure 1). Oxyselenides can form a wide range of structures in compounds containing various transition metals, and thus can exhibit a wide range of properties. Most importantly, oxyselenides have a wide range of thermal conductivity, which can be controlled with changes in temperature in order to adjust their thermoelectric performance. Current research on oxyselenides indicates their potential for significant application in electronic materials. == Synthesis == The first oxyselenide to be crystallized was manganese oxyselenide in 1900.〔Fonzes-Diacon, H. (1990). "A synthesized selenide and an oxyselenide of manganese." Competes Rendus Hebdomadaires des Seances de l'Academie des Sciences 130: 1025: 1025-6.〕 In 1910, oxyselenides containing phosphate were created by treating P2Se5 with metal hydroxides.〔Ephraim, F., and E. Majler. (1910). "Selenophosphates." Berichte der Deutschen Chemischen Gesellschaft 43: 277-285.〕 Uranium oxyselenide was formed next by treating H2Se with uranium dioxides at 1000 °C.〔Khodadad, P. (1957) "Uranium Oxyselenide. UOSe." Compt. Rend. 245: 226: 2286-8.〕 This technique was also utilized in synthesizing oxyselenides of rare earth elements in the mid-1900s.〔Guittard, M., Flahaut, J., and Domange, L. "The oxyselenide of Yttrium and all the rare earths". Acta Crystallographica 21 (5).〕 Synthesis of oxyselenide compounds currently involves treating oxides with aluminum powder and selenium at high temperatures. Recent discoveries in iron oxyarsenides and their superconductivity have highlighted the importance of mixed anion systems. Mixed copper oxychalcogenides came about when the electronic properties of both chalcogenides and oxides were taken into account. Chemists began pursuing the synthesis of a compound with metallic and charge density wave properties as well as high temperature superconductivity. Upon synthesizing the copper oxyselenide Na1.9Cu2Se2 *Cu2O by reacting Na2Se3.6 with Cu2O, they concluded that a new type of oxychalcogenides could be synthesized by reacting metal oxides with polychalcogenide fluxes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oxyselenide」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.