Red luminescence and ferromagnetism in europium oxynitridosilicates with a β-K2SO4 structure

2015-02-02 14-10-14

Ashley P. Black, Kristin A. Denault, Judith Oró-Solé, Alejandro R. Goñi and Amparo Fuertes*.  
Chem. Commun., 2015,51, 2166-2169

DOI: 10.1039/C4CC08548E

The new compounds LaSrSiO3N and LaBaSiO3N activated with Eu2+ are orange-red light-emitting luminescent materials under excitation in the UV-blue range. They represent the first examples of stoichiometric alkaline earth oxynitridosilicates with a β-K2SO4 structure. The isostructural compound LaEuSiO3N is ferromagnetic with a Curie temperature of 3 K and also shows red luminescence (λmax = 705 nm) under excitation at 405 nm.

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