Glasses come to order

Thermodynamic and structural properties of binary calcium silicate glasses: insights from molecular dynamics

The thermodynamic and structural properties of calcium-modified binary silicate glasses have been computed using molecular dynamics simulations.

Antiferromagnetism in Pressure-Amorphized Fe 2 SiO 4

Amorphous Fe(2)SiO(4) synthesized at elevated pressures exhibits a Néel transition at a temperature identical to that observed in the crystalline form, T(N) = 65 (+/-2) kelvin at zero pressure. This behavior contrasts sharply with observations on other disordered systems, such as spin glasses, which characteristically exhibit strong "frustration" of the spins and consequent marked suppression of the Néel transition.