Optical and structural investigation of KMgLa(PO{sub 4}){sub 2} phosphate doped with europium
- Changchun Inst. of Applied Chemistry, Changchun (China)
A new compound KMgLa(PO{sub 4}){sub 2}, isotypic with monoclinic LaPO{sub 4}, is reported. Its cell parameters have been determined from X-ray powder diffraction data. Crystallization occurs in the monoclinic space group P2{sub 1}/n (No. 14) with a = 6.839(3) {angstrom}, b = 7.066(1) {angstrom}, c = 6.523(3) {angstrom}, {beta} = 103.42(4){degrees}, and Z = 2. It was found that the KMgLa(PO{sub 4}){sub 2} phase was isostructural with monoclinic LaPO{sub 4}. The difference between them was that half of the La atoms in LaPO{sub 4} were couplingly substituted with the same amount of Mg and K atoms. This isomorphous substitution was confirmed by IR and Eu{sup 3+}-doped excitation and emission spectra and by elemental analysis of single crystals. The spectroscopic data were compared with those of LaPO{sub 4}:Eu{sup 3+}.
- OSTI ID:
- 552741
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 114; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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