TITLE:
Synthesis and Fluorescence Properties of Europium-Substituted Lanthanum Orthophosphate and Condensed Phosphates
AUTHORS:
Hiroaki Onoda, Takehiro Funamoto
KEYWORDS:
Condensed Phosphate; Europium; Fluorescence; Resistance against Hydrofluoric Acid
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.2 No.1,
March
19,
2012
ABSTRACT: Mixtures of lanthanum oxide, europium oxide, and phosphoric acid were heated with various ratios of P/(La + Eu) and Eu/(La + Eu). The obtained phosphates were estimated using XRD patterns, FT-IR spectra, and SEM images. The fluo-rescence spectra and resistance against hydrofluoric acid were estimated as functional properties of these phosphate materials. The condensed phosphates showed a strong peak at 615 nm and high resistance against hydrofluoric acid.