翻訳と辞書 Words near each other ・ Lanthanopilio ・ Lanthanostegus ・ Lanthanosuchidae ・ Lanthanosuchoidea ・ Lanthanosuchus ・ Lanthanum ・ Lanthanum aluminate ・ Lanthanum aluminate-strontium titanate interface ・ Lanthanum barium copper oxide ・ Lanthanum carbide ・ Lanthanum carbonate ・ Lanthanum gallium silicate ・ Lanthanum hexaboride ・ Lanthanum hydroxide ・ Lanthanum manganite ・ Lanthanum oxide ・ Lanthanum strontium cobalt ferrite ・ Lanthanum strontium manganite ・ Lanthanum trifluoride ・ Lanthanum(III) bromide ・ Lanthanum(III) chloride ・ Lanthenans ・ Lanthes ・ Lantheuil ・ Lanthier ・ Lanthionine ・ Lanthionine Ketimine ・ Lanthus ・ Lantian ・ Lantian County Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Lanthanum oxide ： ウィキペディア英語版 Lanthanum oxide |Section2= |Section3= |Section7= |Section8= }} Lanthanum oxide is La2O3, an inorganic compound containing the rare earth element lanthanum and oxygen. It is used to develop ferroelectric materials, as a component of optical materials, and is a feedstock for certain catalysts. ==Properties== La2O3 has a band gap at approximately 5.8 eV. It has the lowest lattice energy, with very high dielectric constant, ε = 27. La2O3 is widely used in industry as well as in the research laboratory. Lanthanum oxide is an odorless, white solid that is insoluble in water, but soluble in dilute acid. Depending on the pH of the compound, different crystal structures can be obtained. La2O3 is hygroscopic; under atmosphere, lanthanum oxide absorbs moisture over time and converts to lanthanum hydroxide. Lanthanum oxide has p-type semiconducting properties. Its resistivity decreases with an increase in temperature. Its average room temperature resistivity is 10 kΩ·cm. 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「Lanthanum oxide」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.