Local environment of optically active Nd3 + ions in the ultratransparent BaMgF 4 ferroelectric crystal
EntityUAM. Departamento de Física Aplicada
PublisherAmerican Physical Society
10.1103/PhysRevB.85.184110Physical Review B 85.18 (2012): 184110
ISSN1550-235X (online); 1098-0121 (print)
Funded byThis work has been supported by the Spanish Ministry of Science under projects MAT2010-17443, MAT2010-21270-C04-02, Consolider-Ingenio MALTA CSD 2007-0045, and Comunidad Autonoma de Madrid under Grant 2009/MAT-1756
ProjectComunidad de Madrid. S2009/MAT-1756/PHAMA; Gobierno de España. MAT2010-17443; Gobierno de España. MAT2010-21270- C04-02; Gobierno de España. CSD 2007-0045
Rights© 2012 American Physical Society
A comprehensive study of the site location of Nd3 + ions in the BaMgF 4 ultratransparent ferroelectric crystal is presented. By combining different low-temperature optical spectroscopies and electron paramagnetic resonance, the crystal field energy levels of Nd3 + ions and the gyromagnetic factors are experimentally determined. These results are employed to perform the crystal field analysis of Nd3 + ions considering a Cs point symmetry. The crystal field calculation yields a small root-mean-square deviation of 18 cm -1 and reveals a large crystal field strength (621 cm -1), verifying the assignment of the Ba2 + cationic site as the location for Nd3 + ions in this fluoride host. The results suggest a slight displacement of Nd3 + from the barium regular site with a rearrangement of the fluorine ions around it. The work gives a deep insight into the properties of the Nd3 +-doped BaMgF 4 crystal, a ferroelectric widely ultra-transparent material with potential applications as optical device operating in the Vacuum Ultraviolet-Ultraviolet and midinfrared spectral regions
Google Scholar:Muñoz-Santiuste, J. E. - Loro, H. - Marino, R. A. - Vasyliev, V. - Víllora, Encarnación G. - Shimamura, K. - Molina, P. - Ramírez Herrero, María de la O - Bausa López, Luisa Eugenia - Goldner, Ph.
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