Structural, spectroscopic and magnetic properties of Nd3+ doped lead tellurite glass ceramics containing silver
作者： Liviu Bolundut , Lidia Pop , Maria Bosca , Niculina Tothazan , Gheorghe Borodi
DOI: 10.1016/J.JALLCOM.2016.09.084
关键词: Magnetic susceptibility 、 Analytical chemistry 、 Spectroscopy 、 Ionic bonding 、 Silver nanoparticle 、 Crystallite 、 Metal 、 Silver oxide 、 Crystallinity 、 Materials science 、 Mineralogy
摘要: Abstract Structural, optical, luminescent and magnetic properties of some lead tellurite glass ceramics doped with variable amounts neodymium oxide (Nd 2 O 3 ) co-doped fixed silver (metallic nanoparticles (AgNPs) (Ag O)) were investigated using density, X-ray diffraction (XRD), diffuse reflectance ultraviolet-visible (DR-UV–vis) spectroscopy, photoluminescence spectroscopy (PL) susceptibility measurements. XRD data used to evaluate the average crystallite size degree crystallinity studied ceramics. DR-UV–vis spectra reveal presence Nd 3+ ions in samples. Both series samples (co-doped AgNPs or Ag O) exhibit negative values for bonding parameter (δ) suggesting an ionic type -ligand bonds. The show that concentrations higher than 1 mol% PL peaks decrease intensity, this concentration representing quenching concentration. Magnetic measurement indicate contents lower 3 mol% exist as isolated species participate dipole-dipole interactions while coupled by antiferromagnetic interactions.
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