Crystal Growth of a New Series of Complex Niobates, LnKNaNbO₅ (Ln = La, Pr, Nd, Sm, Eu, Gd, and Tb): Structural Properties and Photoluminescence

Author(s)

Irina P. Roof, University of South Carolina - Columbia
Thomas-C. Jagau, University of South Carolina - Columbia
Wolfgang G. Zeier, University of South Carolina - Columbia
Mark D. Smith, University of South Carolina - ColumbiaFollow
Hans-Conrad zur Loye, University of South Carolina - ColumbiaFollow

Document Type

Paper

Subject Area(s)

Chemistry

Abstract

Single crystals of LnKNaNbO₅ (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb) were grown out of a reactive high temperature hydroxide melt. The structures were solved by single crystal X-ray diffraction. All compounds of the series LnKNaNbO₅ crystallize in the space group P4/nmm. The niobium is located in a rare square pyramidal coordination environment in this layered structure. EuKNaNbO₅, GdKNaNbO₅, and TbKNaNbO₅ exhibit room temperature photoluminescence with bright orange-red, pink-purple, and green emissions, respectively. Unlike in many oxide structures, the photoluminescence is not quenched, although the rare earth elements fully occupy a position in the crystal structure.

Digital Object Identifier (DOI)

https://doi.org/10.1021/cm9003245

Publication Info

Published in Chemistry of Materials, Volume 21, Issue 9, 2009, pages 1955-1961.

Rights

© Chemistry of Materials 2009, American Chemical Society.

APA Citation

Roof, I., Jagau, T.-C., Zeier, W., Smith, M., & zur Loye, H.-C. (2009). Crystal Growth of a New Series of Complex Niobates, LnKNaNbO5 (Ln = La, Pr, Nd, Sm, Eu, Gd, and Tb): Structural Properties and Photoluminescence. Chemistry of Materials, 21(9), 1955–1961. https://doi.org/10.1021/cm9003245