Shear modulus and compliance in the range of the dynamic glass transitionfor metallic glasses

The dynamic shear modulus and compliance of the dynamic glass transition wereinvestigated in two metallic glasses (Pd_(40)Ni_(40)P_(20) and Zr_(65)Al_(7.5)Cu_(17.5)Ni_(10).Isothermal measurements over four frequency decades enable the determination of shape parameters forthe proper glass transition. The real part of the dynamic… Read moreShear modulus and compliance in the range of the dynamic glass transitionfor metallic glasses

Off-resonance nutation nuclear magnetic resonance study of framework aluminosilicate glasses with Li, Na, K, Rb or Cs as charge-balancing cation

Framework aluminosilicate glasses with varying charge-balancing cation (Li, Na, K, Rb and Cs) have been studied with **2**7Al and **2**9Si magic-angle spinning nuclear magnetic resonance (MAS NMR) and **2**7Al on-resonance and off- resonance nutation NMR spectroscopy. This first application of… Read moreOff-resonance nutation nuclear magnetic resonance study of framework aluminosilicate glasses with Li, Na, K, Rb or Cs as charge-balancing cation

Contribution of theoretical chemistry to the investigation of optical nonlinearities in glasses

The origin of optical non-linear response has been investigated in titaniumand niobium borophosphate glasses and in tellurite glasses. Correlations between the local structureof polarizable entities within the glasses and their optical activities have been tentativelyestablished through a semi-empirical model and… Read moreContribution of theoretical chemistry to the investigation of optical nonlinearities in glasses

Photochromic behavior in the fluorescence spectra of 9-anthrol encapsulated in Si-Al glasses prepared by the sol-gel method

The fluorescence spectra of 9-anthrol during the sol-gel-xerogel transitions of 13 systems containing different silicon and aluminum ratios and catalysts have been observed at a constant temperature (300 K) as a function of the sol-gel reaction time. Fluorescence decay curves… Read morePhotochromic behavior in the fluorescence spectra of 9-anthrol encapsulated in Si-Al glasses prepared by the sol-gel method

INFLUENCE OF HYDROGEN ON THE SUPERCONDUCTING AND THE PARAMAGNETIC PROPERTIES OF SOME Zr-3d METALLIC GLASSES

We present the experimental results on the effects of hydrogen doping on the superconducting and paramagnetic properties of zirconium-rich (x > 0.66) Zrx3d1-x metallic glasses. Zr0.70Cu0.30, Zr0.67Ni0.33 and Zr0.67Co0.33 are superconductors with a superconducting transition temperature in the vicinity of… Read moreINFLUENCE OF HYDROGEN ON THE SUPERCONDUCTING AND THE PARAMAGNETIC PROPERTIES OF SOME Zr-3d METALLIC GLASSES