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Magnetic phase separation in EuB6 detected by muon spin rotation

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arxiv cond-mat/0412019 v1 pith:S2GMMAE5 submitted 2004-12-01 cond-mat.str-el

Magnetic phase separation in EuB6 detected by muon spin rotation

classification cond-mat.str-el
keywords magneticcomponentsmuonphaseresultsrotationseparationarise
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We report results of the first muon-spin rotation measurements performed on the low carrier density ferromagnet EuB$_6$. The ferromagnetic state is reached via two magnetic transitions at $T_{\rm m}=16.5$ K and $T_{\rm c}=12.6$ K. Two distinct components are resolved in the muon data, one oscillatory and one non-oscillatory, which arise from different types of magnetic environment, and we have followed the temperature dependence of these components in detail. These results provide evidence for magnetic phase separation and can be interpreted in terms of the gradual coalescing of magnetic polarons.

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