Rapid microwave synthesis of the iron arsenides NdFeAsO and NdFe_0.9Co_0.1AsO

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• 作者：Sean W. Muir ^{muirs@onid.orst.edu} ; Omar D. Rachdi ^{rachdio@onid.orst.edu} ; M.A. Subramanian ; ^{mas.subramanian@oregonstate.edu}
• 关键词：A. Superconductors ; B. Chemical synthesis ; D. Electrical properties ; D. Magnetic properties ; D. Superconductivity
• 刊名：Materials Research Bulletin
• 出版年：2012
• 期刊代码：60_00255408
• 类别：ms
• 出版时间：March, 2012
• 卷：47
• 期：3
• 页码：798-800
• 文件大小：465 K

摘要

The future of iron pnictide superconductors in technology is still undecided. While these materials are now known to possess relatively high critical temperatures and critical magnetic fields, processing methods for these superconductors are still in the development stage. Recently we have been investigating possible ways to speed up the synthetic process for obtaining polycrystalline iron arsenide superconductors and other transition metal pnictides. Here we report the synthesis of NdFeAsO and NdFe_0.9Co_0.1AsO in less than 1 h total exposure to microwave radiation using an additional microwave susceptor to surround the reaction ampoule. Structure and property measurements reveal the samples to be of high quality and superconducting when Co doped.