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Electron spin resonance of Eu2+ in the Eu doped clathrate Ba6Ge25

MPS-Authors
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Sichelschmidt,  J.
Jörg Sichelschmidt, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Carrillo-Cabrera,  W.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Ivanshin,  V. A.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Y.
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Steglich,  F.
Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Sichelschmidt, J., Carrillo-Cabrera, W., Ivanshin, V. A., Grin, Y., & Steglich, F. (2005). Electron spin resonance of Eu2+ in the Eu doped clathrate Ba6Ge25. The European Physical Journal B, Condensend Matter Physics, 46(2), 201-205. doi:10.1140/epjb/e2005-00246-8.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-2C93-5
Abstract
We report electron spin resonance (ESR) investigations of the clathrate compound Ba6-xEuxGe25 (x=0.03–0.4) which exhibits a temperature induced, two-step reconstructive structure transformation at temperatures between 185 K and 223 K. The linewidth of the Eu2+ ESR proves to be sensitive to the transformation. Another anomaly in the temperature dependence of the linewidth is found near T=60 K which points towards another possible structural transition. Both anomalies seen in the ESR linewidth are not sensitive to the Eu content in contrast to the strong Eu-concentration dependence of transport properties.