Intrinsic ferromagnetic impurity phases in SmFeAsO1-xFx detected by muSR

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.

The International Conference on FeAs High Tc Superconducting Multilayers and Related Phenomena (Superstripes2008), Rome, Italy, December 9-13, 2008

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Cited by in corpus (5)

• Magnetic-superconducting phase boundary of SmFeAsO${}_{1-x}$F${}_x$ studied via muon spin rotation: Unified behavior in a pnictide family
• Nanoscopic coexistence of magnetic and superconducting states within the FeAs layers of CeFeAsO1-xFx
• High-$T_{\mathrm{c}}$ superconductivity in undoped ThFeAsN
• Role of magnetic dopants in the phase diagram of Sm1111 pnictides: The Mn case
• Crossover between magnetism and superconductivity in low H-doped LaFeAsO