Short note on magnetic impurities in SmFeAsO$_{1-x}$F$_x$ (x=0, 0.07) compounds revealed by zero-field $^{75}$As NMR

Authors :: Sidorenko, A. A.
De Renzi, R.
Martinelli, A.
Palenzona, A.
Publication Year :: 2008
Abstract: We have performed zero-field $^{75}$As nuclear magnetic resonance study of SmFeAsO$_{1-x}$F$_x$ (x=0, 0.07) polycrystals in a wide frequency range at various temperatures. $^{75}$As resonance line was found at around 265 MHz revealing the formation of the intermetallic FeAs clusters in the new layered superconductors. We have also demonstrated that NMR is a sensitive tool for probing the quality of these materials.<br />Comment: Revised authorship

Subjects :: Condensed Matter - Superconductivity
Condensed Matter - Materials Science

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