G. Brunauer

TL;DR: Extensive neutron diffraction and Rietveld studies of dense, hot pressed mullite (3Al 2 O 3 ·2SiO 2 ) have been conducted up to 1650°C in air, yielding a complete set of lattice parameters and axial thermal expansion coefficients as discussed by the authors.

TL;DR: In this article, the authors measured the thermal expansion of undoped and Cr-doped 3/2 mullites (10.8 wt.% Cr2O3) with in situ neutron and X-ray synchrotron (25-1000°C) diffraction techniques.

TL;DR: In this article, high temperature neutron investigations up to 1950 K of 3:2-sintered mullite show a smooth reversible behaviour which can be described by a rotation of more or less rigid TO4 (T = Al(2),Si)-tetrahedra and accompanying distortions of the Al(1)O6-octahedra.

TL;DR: In this paper, the temperature dependence of the domain structure associated with the ferroelastic phase transition (FmmRm) in ZrO2 doped with 11% Sc2O3 has been determined from a peak shape analysis of high-resolution synchrotron x-ray powder diffraction data.

TL;DR: In this article, a definite non-thermal microwave effect on the resulting crystallographic structures was discovered mainly derived from opposite changes of the lattice constants and the atomic displacement parameters, due to changes in the phonon density of states (DOS) due to coupling of the microwave field via (anharmonic) multi phonon processes, limited phonon life times and local modes arising from the defects.