Crystal Growth, Structures, Magnetic and Photoluminescent Properties of NaLnGeO₄ (Ln = Sm, Eu, Gd, Tb)

Author(s)

Jeongho Yeon, University of South Carolina - Columbia
John B. Hardaway, Clemson University
Athena S. Sefat, Oak Ridge National Laboratory, Oak Ridge, TN
Allison M. Latshaw, University of South Carolina - Columbia
Hans-Conrad zur Loye, University of South Carolina - ColumbiaFollow

Document Type

Article

Subject Area(s)

Chemistry

Abstract

Single crystals of NaLnGeO₄ (Ln = Sm, Eu, Gd) were grown out of a moltensodium hydroxide flux, and their crystal structures were determined by single crystal X-ray diffraction. The lanthanide containing germanates crystallize in the orthorhombic space group of Pnma, and exhibit a complex three-dimensional structure consisting of corner- or edge-shared LnO₆, GeO₄, and NaO₆polyhedra. UV–vis diffuse reflectance spectra indicated that the reported oxides are insulating materials with wide band gaps. The magnetic susceptibility data shows paramagnetic behavior. For the NaEuGeO₄ and NaTbGeO₄compositions intense room temperature photoluminescence was observed.

Digital Object Identifier (DOI)

https://doi.org/10.1016/j.solidstatesciences.2014.05.002

Publication Info

Published in Solid State Sciences, Volume 34, 2014, pages 24-30.

Rights

© Solid State Sciences 2014, Elsevier Masson SAS.

APA Citation

Yeon, J., Hardaway, J., Sefat, A., Latshaw, A., & zur Loye, H.-C. (2014). Crystal Growth, Structures, Magnetic and Photoluminescent Properties of NaLnGeO₄ (Ln = Sm, Eu, Gd, Tb). Solid State Sciences, 34, 24–30. https://doi.org/10.1016/j.solidstatesciences.2014.05.002