Any substance that is both an oxide and a pnictide, especially any of a class of such iron compounds that are semiconductors

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  • Oxypnictide — 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,[1] interest in these… …   Wikipedia

  • Unconventional superconductor — Unconventional superconductors are materials that display superconductivity but that do not conform to BCS theory and Nikolay Bogolyubov theory or its extensions.The first unconventional triplet superconductor, organic material (TMTSF)2PF6,was… …   Wikipedia

  • Nitrogen group — Group 15 Period 2 7 N 3 …   Wikipedia

  • Superconductivity — is a phenomenon occurring in certain materials generally at very low temperatures, characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect).The electrical resistivity of a metallic …   Wikipedia

  • Iron-based superconductor — Iron based superconductors (sometimes misleadingly called Iron superconductors) are (in 2008) in the first stages of experimentation and implementation. Previously most high temperature superconductors were cuprates and were therefore based on… …   Wikipedia

  • oxyarsenide — noun An oxypnictide in which the pnictogen is arsenic …   Wiktionary

  • oxopnictide — noun oxypnictide …   Wiktionary

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