▪ Abstract The synthesis of the two currently used superhard materials, diamond and cubic
boron nitride, is briefly described with indications of the factors influencing the quality of the …

Atomic layer deposited (ALD) high-dielectric-constant (high-k) materials have found
extensive applications in a variety of electronic, optical, optoelectronic, and photovoltaic …

An extensive survey of the porosity dependence of (room temperature) physical properties
shows that mechanical properties and electrical and thermal conductivity, ie properties …

The bulk modulus B0= 290 (5) GPa and its first pressure derivative B′ 0= 4.9 (6) were
obtained for c‐Si3N4 from volume versus pressure dependence. Measurements were …

The elastic moduli of yttria (Y2O3) samples that were made from powders with various
particle morphologies were studied by means of ultrasonic measurements. The soundwave …

The lattice dynamics of three polymorphs of Si 3 N 4, α, β, and γ phases, has been
calculated by the real space force constant method combined with first-principles …

Ultrasonic attenuation coefficients of ceramic and inorganic materials were determined for
the longitudinal and transverse wave modes. Sample materials included hard and soft …

The estimate of Young's modulus from instrumented indentation test results relies on
knowing in advance the Poisson's ratio of the sample's material. However, in many cases …

The ground state total energies of α‐and β‐Si3N4 crystals are calculated by an ab‐initio
method based on local density functional theory. The calculated bulk modulus and pressure …

The crystal structures of the four experimentally observed phases of Si 3 N 4 with space
groups P 6 3/m, P 6 3, P 3 1/c, and Fd 3/m are fully optimized by means of first-principles …