Single crystal growth and structure analysis of type-I (Na/Sr)-(Ga/Si) quaternary clathrates

Hironao Urushiyama, Haruhiko Morito, Hisanori Yamane

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2 Citations (Scopus)


Single crystals of (Na/Sr)-(Ga/Si) quaternary type-I clathrates, Na8-ySryGaxSi46-x, were synthesized by evaporating Na from a mixture of Na-Sr-Ga-Si-Sn in a 6 : 0.5 : 1 : 2 : 1 molar ratio at 773 K for 12 h in an Ar atmosphere. Electron-probe microanalysis and single-crystal X-ray diffraction revealed that three crystals from the same product were Na8-ySryGaxSi46-x with x and y values of 7.6, 2.96; 8.4, 3.80; and 9.1, 4.08. It was also shown that increasing the Sr and Ga contents increased the electrical resistivity of the crystal from 0.34 to 1.05 mΩ cm at 300 K.

Original languageEnglish
Pages (from-to)14586-14591
Number of pages6
JournalRSC Advances
Issue number26
Publication statusPublished - 2019

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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