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arXiv · 0909.3004

Intrinsic ferromagnetic impurity phases in SmFeAsO1-xFx detected by muSR

S. Sanna·R. De Renzi·G. Lamura·C. Ferdeghini·A. Martinelli·A. Palenzona·M. Putti·M. Tropeano·T. Shiroka
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Abstract

We report about muSR measurements on SmFeAsO1-xFx which helped us to identify the signature of diluted ferromagnetic inclusions, ubiquitous in the iron pnictides. These impurities are characterized by a Curie temperature close to room temperature and they seem responsible for a non negligible magnetic relaxation of the implanted muons, that should not be confused with intrinsic pnictide properties.

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S. Sanna, R. De Renzi, G. Lamura, C. Ferdeghini, A. Martinelli, A. Palenzona, M. Putti, M. Tropeano, T. Shiroka. 2009-09-16. Intrinsic ferromagnetic impurity phases in SmFeAsO1-xFx detected by muSR. https://doi.org/10.1007/s10948-009-0472-y

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