Tellurite glasses. Part 1. Elastic properties

摘要: Abstract Tellurite glasses (pure, binary, ternary and quaternary systems containing transition metal or rare earth oxides) are now a new type of noncrystalline solids with lot applications over wide range compositions, temperatures frequencies. Elastic properties provide much information about the structures they directly related to interatomic potentials. Glasses isotropic have only two independent elastic constant, C11 C44. These parameters been collected from longitudinal shear sound velocities density glass. The rest constants (bulk, Young's modulus, Poisson's ratio) could be deduced. hydrostatic uniaxial pressure dependences ultrasonic waves in these at room temperature collected. data proved both second third order glass consequence acoustic mode Gruneisen estimated bulk modulus ratio calculated using bond compression model according cationanion each oxide present Information structure can deduced after calculating number network bonds per unit volume, value average stretching force ring size, sensitivity factor mean cross-link density. Comparisons between end experimental moduli carried out. Also, role halogen inside has discussed.