A facile way to synthesis KMgF3 and its luminescent property with Eu doping

Abstract KMgF 3 and KMgF 3 : Eu samples were firstly fabricated by molten salt synthesis (MSS) method in NH 4 HF 2 flux without any surfactants. The NH 4 HF 2 flux was utilized as both the reactant and the fluxing agent. The products with uniform and regular morphologies were characterized by X-ray diffraction (XRD), thermal stability (TG), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL) spectra. The luminescent properties show that the obtained KMgF 3 sample got a broad band blue emission at about 430 nm arising from the trace oxygen and the color center, and the KMgF 3 : Eu sample exhibited fantastic emission under the excitation of different wavelengths.