For all samples, the crystal diffraction peaks corresponding to Ca12Al14O33 phase, while the CaAl-900-10.0% sample remained with the presence of few diffraction peaks owing to the CaO crystal phase
, suggesting that the extra unreacted Ca species could be transferred to form calcium oxide after the calcination process .
The structural evolution upon stretching has been followed in situ to ensure that no crystal phase
transformations occurs upon stretching and that stretching only involves an orientation of the crystalline entities.
The Landau-de Gennes and Oseen-Frank models are the two most widely used continuum models to characterize equilibrium orientational properties of materials in the nematic liquid crystal phase
. The Landau-de Gennes model is a mesoscopic phenomenological model expressed in terms of an integral functional of a tensor field Q, the "tensor order parameter." In its simplest form (the "equal elastic constant model"), the functional can be written
Krivosik et al., "Liquid crystal phase
shifters at millimeter wave frequencies," Journal of Applied Physics, vol.
Post-deposition annealing results in phase transformation which leaves the films with only the hexagonal crystal phase
and reduced strain and dislocation density while increasing the crystallite sizes.
Generally, the SiC crystal phase
, produced from the SiO vapor and graphite at high temperature over 1500[degrees]C, shows mainly cubic structure of 3C type with hexagonal SiC phase .
Therefore, it is reasonable to consider that our ex situ annealed films consist of type (II) hexagonal La oxycarbonate crystal phase
In order to achieve the balance of charge, oxygen vacancies appear on the anatase surface, which is beneficial to the atomic rearrangement and restructuring of rutile crystal phase
, eventually prompting a phase transformation from anatase to rutile.
There are some common features which define crystal phase
Clinker based on recycled materials, designed to obtain ferrite and silicate phases, was presented a crystal phase
is uniformly distributed over the entire surface of the section.
Dolfi, "Modelling, synthesis and characterization of a millimeter-wave multilayer microstrip liquid crystal phase