Crystal growth of a series of lithium garnets Ln(3)Li(5)Ta(2)O(12) (Ln=La, Pr, Nd): Structural properties, Alexandrite effect and unusual ionic conductivity

Roof, I.P. and Smith, M.D. and Cussen, E.J. and zur Loye, H.C. (2009) Crystal growth of a series of lithium garnets Ln(3)Li(5)Ta(2)O(12) (Ln=La, Pr, Nd): Structural properties, Alexandrite effect and unusual ionic conductivity. Journal of Solid State Chemistry, 182 (2). pp. 295-300. ISSN 0022-4596 (https://doi.org/10.1016/j.jssc.2008.10.032)

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Abstract

We report the single crystal structures of a series of lanthanide containing tantalates, Ln3Li5Ta2O12 (Ln=La, Pr, Nd) that were obtained out of a reactive lithium hydroxide flux. The structures of Ln3Li5Ta2O12 were determined by single crystal X-ray diffraction, where the Li+ positions and Li+ site occupancies were fixed based on previously reported neutron diffraction data for isostructural compounds. All three oxides crystallize in the cubic space group (No. 230) with lattice parameters a=12.7735(1), 12.6527(1), and 12.5967(1) Å for La3Li5Ta2O12, Pr3Li5Ta2O12, and Nd3Li5Ta2O12, respectively. A UV-Vis diffuse reflectance spectrum of Nd3Li5Ta2O12 was collected to explain its unusual Alexandrite-like optical behavior. To evaluate the transport properties of Nd3Li5Ta2O12, the impedance data were collected in air in the temperature range 300T(°C)500.

ORCID iDs

Roof, I.P., Smith, M.D., Cussen, E.J. ORCID logoORCID: https://orcid.org/0000-0002-2899-6888 and zur Loye, H.C.;
  • Item type:Article
    ID code:19296
    Dates:
    Date
    Event
    February 2009
    Published
    Keywords:hydroxide flux, crystal growth, tantalates, lanthanides, Alexandrite effect, lithium ionic conductivity, optical properties, Chemistry, Materials Chemistry, Ceramics and Composites, Physical and Theoretical Chemistry, Electronic, Optical and Magnetic Materials, Inorganic Chemistry, Condensed Matter Physics
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Strathprints Administrator
    Date deposited:25 Oct 2010 14:04
    Last modified:01 Nov 2023 09:35
    URI:https://strathprints.strath.ac.uk/id/eprint/19296
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