NMR studies of Ba8Ga16Sn30 clathrates

H. Tou, K. Sonoda, Y. Nishikawa, H. Kotegawa, H. Suekuni, T. Onimaru, T. Takabatake

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Abstract

Nuclear Magnetic Resonance measurements have been carried out in type VIII Ba8Ga16Sn30 (α-BGS) and type I Ba 8Ga16Sn30 (3-BGS) clathrates having caged structure. We have observed Sn-and Ga-NMR spectra for both clathrates. Characteristic Sn-NMR line profiles for both clathrates can be explained by taking account of the crystallographic sites in the framework of cages. We have also measured nuclear spin-spin relaxation rate 1/T2 in α-BGS. 1/T2 weakly depends temperature, but it is drastically suppressed with increasing resonance frequency. These results strongly suggest that the guest Ba ions vibrates at on-center location with characteristic correlation time of ≈ 10-8 s.

Original languageEnglish
Article numberSA039
Journaljournal of the physical society of japan
Volume80
Issue numberSUPPL. A
DOIs
Publication statusPublished - Jul 1 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Tou, H., Sonoda, K., Nishikawa, Y., Kotegawa, H., Suekuni, H., Onimaru, T., & Takabatake, T. (2011). NMR studies of Ba8Ga16Sn30 clathrates. journal of the physical society of japan, 80(SUPPL. A), [SA039]. https://doi.org/10.1143/JPSJS.80SA.SA039