Rapid microwave synthesis of the iron arsenides NdFeAsO and NdFe{sub 0.9}Co{sub 0.1}AsO
- Department of Chemistry, Oregon State University, Corvallis, OR 97331 (United States)
Graphical abstract: For the first time, a rapid method for synthesizing NdFeAsO and NdFe{sub 0.9}Co{sub 0.1}AsO is reported. This method uses 2.45 GHz microwave radiation and an additional microwave susceptor to drive the reaction. The superconducting properties NdFe{sub 0.9}Co{sub 0.1}AsO of microwave synthesized materials match well with those reported previously. Highlights: Black-Right-Pointing-Pointer Microwave assisted solid state synthesis of NdFeAsO and NdFe{sub 0.9}Co{sub 0.1}AsO is reported. Black-Right-Pointing-Pointer Synthesis of high quality samples is achieved after 50 min microwave exposure. Black-Right-Pointing-Pointer Physical properties of microwave samples match those prepared conventionally. -- Abstract: 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{sub 0.9}Co{sub 0.1}AsO 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.
- OSTI ID:
- 22212471
- Journal Information:
- Materials Research Bulletin, Vol. 47, Issue 3; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Structural and physical properties of Re substituted B-site ordered and disordered SrCo{sub 1-x}Re{sub x}O{sub 3-{delta}} (x=0.1, 0.25, 0.5)
Low-temperature synthesis, luminescence and phonon properties of Er and/or Dy doped LaAlO{sub 3} nanopowders