L. Le Gendre

A new class of inorganic compounds containing dinitrogen-metal bonds

Abstract TGA of particular oxynitrides shows an unexpected intermediate phase between starting oxynitride and final oxide. Transition between this intermediate phase and the oxide step, studied by high resolution mass spectrometry, reveals that this phenomenon can be ascribed to a nitrogen retention. We deduce the general formulation M n+ O n 2 N x . Particular properties of those phases are: low density, structure type analogous to the one of their oxynitride precursor and a nitrogen binding energy, measured by XPS, near 403 eV. By comparison to the binding energy range of organometallic dinitrogen complexes, we assume the presence of M-NN-M entities included in an oxide lattice with cationic defect structure.

LaTiO x N y Thin Films, Measurement and Application to Microwave Device

This paper reports about three issues: a non-destructive method for dielectric measurement of materials; the first microwave dielectric measurement of a new birth dielectric LaTiOxNy material, and a topology for X-band phase shifter based on tuneable ferroelectric thin films interdigital capacitors.

Reduction of Lanthanide Ions in Si-Al-O-N Glasses

The goal of this study is to determine the oxidation state of ytterbium and samarium in oxynitride glasses. After evaluation of the optical and mechanical properties of the glasses it can be concluded that both ions partially reduce from the trivalent state in the raw materials to the divalent state in the glasses. The resulting glasses thus contain a mixture of the divalent and trivalent ion.