Ionic conductivity and Raman spectra of Na--Li, K--Li, and K--Sn. beta. -Al/sub 2/O/sub 3/

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The ionic conductivity and Raman spectra of Na, Na--Li, K, K--Li, and K--Sn ..beta..-Al/sub 2/O/sub 3/ were measured in order to understand the mechanisms of mixed-ion conduction. It was observed that at 300/sup 0/K, for example, the conductivity of a crystal with composition Na/sub 0/./sub 82/Li/sub 0/./sub 18/..beta..-Al/sub 2/O/sub 3/ was about one-fifth that of pure Na cyrstals, while the conductivity of K/sub 0/./sub 80/Li/sub 0/./sub 20/..beta..-Al/sub 2/O/sub 3/ was more than three orders of magnitude lower than that of pure K compounds. The results of a model calculation indicated that the Li/sup +/ ions are the main carrier species ... continued below

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Pages: 11

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Kaneda, T.; Bates, J.B.; Wang, J.C. & Engstrom, H. January 1, 1979.

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Description

The ionic conductivity and Raman spectra of Na, Na--Li, K, K--Li, and K--Sn ..beta..-Al/sub 2/O/sub 3/ were measured in order to understand the mechanisms of mixed-ion conduction. It was observed that at 300/sup 0/K, for example, the conductivity of a crystal with composition Na/sub 0/./sub 82/Li/sub 0/./sub 18/..beta..-Al/sub 2/O/sub 3/ was about one-fifth that of pure Na cyrstals, while the conductivity of K/sub 0/./sub 80/Li/sub 0/./sub 20/..beta..-Al/sub 2/O/sub 3/ was more than three orders of magnitude lower than that of pure K compounds. The results of a model calculation indicated that the Li/sup +/ ions are the main carrier species in the Na--Li and K--Li mixed compounds. Features observed in the Raman spectra were attributed to paired- and single-ion vibrations. It is concluded that the K/sup +/ ions which contribute to a band at 69 cm/sup -1/ in K ..beta..-Al/sub 2/O/sub 3/ are the effective carriers for conduction.

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Pages: 11

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Dep. NTIS, PC A02/MF A01.

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  • Fast ion transport in solids-electrode and electrolytes conference, Lake Geneva, WI, USA, 21 May 1979

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  • Report No.: CONF-790538-7
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 6262328
  • Archival Resource Key: ark:/67531/metadc1108690

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1979

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

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  • May 15, 2018, 1:44 p.m.

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Kaneda, T.; Bates, J.B.; Wang, J.C. & Engstrom, H. Ionic conductivity and Raman spectra of Na--Li, K--Li, and K--Sn. beta. -Al/sub 2/O/sub 3/, article, January 1, 1979; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1108690/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.