4.7 Article

Structural, optical, and thermodynamic properties of an LiCa2Mg2As3xV3-3xO12 solid-solution garnet

Journal

JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 106, Issue 6, Pages 3934-3944

Publisher

WILEY
DOI: 10.1111/jace.19037

Keywords

refractive index; thermal conductivity; thermal expansion

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A series of LiCa2Mg2As3xV3-3xO12 garnet powders were synthesized and a complete solid-solution series was found between the endmembers. The homogeneity of the synthesized garnets was confirmed by energy-dispersive spectroscopy. Thermal properties of the garnets were measured from room temperature to 800 degrees C.
A series of LiCa2Mg2As3xV3-3xO12 garnet powders (x = 0, 0.25, 0.50, 0.667, 0.75, and 1) were synthesized using solid-state reaction from mixed precursor powders. A complete solid-solution series was found between the endmembers. Energy-dispersive spectroscopy confirmed the homogeneity of the synthesized garnets. The compositions reversibly melted between 1000 and 1160 degrees C and had low sintering temperatures between 650 and 900 degrees C. Thermal diffusivity, heat capacity, thermal conductivity, density, lattice parameter, thermal expansion, index of refraction, and dispersion were measured from room temperature to 800 degrees C.

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