Review—Temperature Dependence of Transition-Metal and Rare-Earth Ion Luminescence (Mn⁴⁺, Cr³⁺, Mn²⁺, Eu²⁺, Eu³⁺, Tb³⁺, etc.) I: Fundamental Principles

Ternary Rare Earth Transition Metal Zinc Compounds

Forty eight new com pounds RT2Z n2o were prepared by annealing cold-pressed pellets o f the elem ental com ponents in an argon atm osphere. They crystallize with the cubic CeCr^Abo type structure (Fd3m , Z = 8), which was refined from single-crystal diffractom eter data o f TbFeiZn^o (a = 1411.1(1) pm), Y Ru2Z n2o (a = 1422.6(1) pm), D yRu2Z n2o (a = 1422.1(1) pm), G dC o2Z n2o (a = 1406.0(1) p...

Correlations in rare-earth transition-metal permanent magnets

Spectroscopic studies of metal high-k dielectrics: transition metal oxides and silicates, and complex rare earth/transition metal oxides

G. Lucovsky 1, 2, , J. G. Hong, C. C. Fulton, Y. Zou, R. J. Nemanich, H. Ade, D. G. Scholm, and J. L. Freeouf 5 1 Department of Physics, North Carolina State University, USA 2 Department of Materials Science & Engineering, North Carolina State University, USA 3 Department of Electrical & Computer Engineering, North Carolina State University, USA 4 Department of Materials Science & Engineering, ...

Rare Earth Nitrate Complexes with an ONO Schiff Base Ligand: Spectral, Thermal, Luminescence and Biological Studies

Five rare earth complexeslanthanum(III),praseodymium(III),neodymium(III), samarium(III) and europium(III) have been synthesized from Schiff base ligand (N,N-bis (2-hydroxy-1-naphthylidene) acetylhydrazone). The complexes were characterized based on elemental analysis, molar conductance, ultraviolet, infrared, mass, thermogravimetric and powder X-ray diffraction studies. Infrared spectra sug...

Characterization of Rare Earth Elements in Scheelite (CaWO4) with Ion Beam Induced Luminescence

Scheelite is a calcium tungstate mineral (CaWO4) well known in the mining industry as a source of tungsten. This mineral fluoresces under shortwave UV and X-rays excitation with a characteristic blue luminescence centered at about 425 nm. CaWO4-based powder was commonly used as blue phosphor and scintillator (due to high Z of W) [1-3]. The emitted spectrum shifts to yellow in the presence of mo...