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

I.P. Roof, M.D. Smith, E.J. Cussen, H.C. zur Loye

Research output: Contribution to journalArticle

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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.
LanguageEnglish
Pages295-300
Number of pages5
JournalJournal of Solid State Chemistry
Volume182
Issue number2
DOIs
Publication statusPublished - Feb 2009

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alexandrite
Garnets
Ionic conductivity
Crystallization
Lithium
Crystal growth
garnets
ion currents
Structural properties
crystal growth
lithium
lithium hydroxides
Single crystals
Lanthanoid Series Elements
single crystals
Neutron diffraction
Rare earth elements
Transport properties
Oxides
Lattice constants

Keywords

  • hydroxide flux
  • crystal growth
  • tantalates
  • lanthanides
  • Alexandrite effect
  • lithium ionic conductivity
  • optical properties

Cite this

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title = "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",
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) {\AA} 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.",
keywords = "hydroxide flux, crystal growth, tantalates, lanthanides, Alexandrite effect, lithium ionic conductivity, optical properties",
author = "I.P. Roof and M.D. Smith and E.J. Cussen and {zur Loye}, H.C.",
year = "2009",
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language = "English",
volume = "182",
pages = "295--300",
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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.; Smith, M.D.; Cussen, E.J.; zur Loye, H.C.

In: Journal of Solid State Chemistry, Vol. 182, No. 2, 02.2009, p. 295-300.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 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

AU - Roof, I.P.

AU - Smith, M.D.

AU - Cussen, E.J.

AU - zur Loye, H.C.

PY - 2009/2

Y1 - 2009/2

N2 - 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.

AB - 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.

KW - hydroxide flux

KW - crystal growth

KW - tantalates

KW - lanthanides

KW - Alexandrite effect

KW - lithium ionic conductivity

KW - optical properties

U2 - 10.1016/j.jssc.2008.10.032

DO - 10.1016/j.jssc.2008.10.032

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SN - 0022-4596

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