Optical study in a novel quaternary ionic crystal doped with europium

R. R. Mijangos*, A. Cordero-Borboa, E. Alvarez, M. Cervantes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

In this Letter, the novel quaternary alkali halide crystal KCl:KBr:RbCl:RbBr doped with europium, each component in a 25% molar fraction and 0.5% of Eu++, is reported. The value of its refractive index was measured, the crystallographic properties are characterized by X-ray diffractometry, the optical properties were studied by optical absorption in UV-VIS region, and by photoluminescence under N2 laser excitation at 12 K and at RT. The diffractometer diagram of a powder sample shows a single phase and a well defined value of the lattice constant. From the optical absorption spectra of europium, the value of 10 Dq parameter is obtained, the result is in good agreement with X-rays analysis. It was also observed that decay times of the blue emission is independent of temperature and only one decay component is present in the quenched samples. From obtained data, it is suggested that the symmetry of the Eu++ site in the quaternary crystal KCl0.25KBr0.25RbCl0.25RbBr0.25 is similar to a quenched sample of a single component crystal.

Original languageEnglish
Pages (from-to)195-200
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume282
Issue number3
DOIs
StatePublished - 16 Apr 2001
Externally publishedYes

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