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In chemistry, oxypnictides are a class of materials including oxygen, a pnictogen (group-V, especially phosphorus and arsenic) and one or more other elements. Although this group of compounds has been recognized since 1995, interest in these compounds increased dramatically after the publication of the superconducting properties of LaOFeP and LaOFeAs which were discovered in 2006 and 2008. In these experiments the oxide was partly replaced by fluoride. These and related compounds (e.g. the 122 iron arsenides) form a new group of iron-based superconductors known as iron pnictides or ferropnictides since the oxygen is not essential but the iron seems to be. Oxypnictides have been patented as magnetic semiconductors in early 2006.〔H. Hosono ''et al.'' (2006) (Magnetic semiconductor material ) European Patent Application EP1868215〕 ==Structure== Many of the oxypnictides show a layered structure. For example LnFePO with layers of La3+O2− and Fe2+P3−.〔 This structure is similar to that of ZrCuSiAs, which is now the parent structure for most of the oxypnictide. 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「Oxypnictide」の詳細全文を読む スポンサード リンク
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