In the frame of the project we have succeeded in preparing PMN-PT templates by exaggerated grain growth of nanocrystalline powder obtained by mechanochemical activation. Furthermore, we have also succeeded in processing textured ceramics from these templates using a procedure that involves ceramic-only technology from a single-source powder. The textured ceramics was prepared in order to compare the properties of the ceramics with the properties of the textured films. The ratio between the piezoelectric d33 coefficient of the textured ceramics and the films is similar as the ratio of the d33 between the non-textured ceramics and films. The results of these studies were presented on an international conference.
B.06 Other
COBISS.SI-ID: 25976871The aim of our contribution was to present the influence of different processing parameters on the structure and microstructure of the K0.5Na0.5NbO3 (KNN) thick films. We presented the potassium-sodium germanate, i.e., a liquid phase sintering aid, which is required for the preparation of dense KNN thick films. In addition, the influence of the packing powder, i.e., a KNN powder that prevents the sublimation of volatile alkali oxides, on the structure and microstructure of the films was also discussed. Finally, we presented the piezoelectric properties of the as-prepared KNN thick films.
B.06 Other
COBISS.SI-ID: 25977383The aim of the poster was to present the influence of the packing powder on the structure and microstructure of the K0.5Na0.5NbO3 (KNN) thick films. In addition, the origin of the crystallographic orientation of the thick films along directions [100]pc and [10-1]pc was presented as well. The observed crystallographic orientation originates in the relaxation of the compressive thermal stresses, which are created due to the thermal expansion coefficient mismatch between the KNN thick film and the platinized alumina substrate.
B.06 Other
COBISS.SI-ID: 26115367