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In this study, sodium niobate powders were prepared by hydrothermal process for further use as template particles in the texturing of piezoelectric potassium sodium niobate fibers. At the end of the study, three different structures were obtained: Sodium hexaniobate particles with rod-like morphology at 120°C, particles with partially needle- like morphology at 130°C–140°C and SOMS particles with...
Highly pure (K, Na)NbO3 lead-free piezoelectric ceramic powders have been successfully synthesized by solvothermal treatment at 220°C for 10 h using distilled water, ethanol, glycol or isopropanol as the solvent. The powders were characterized using X-ray powder diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning...
In this study, the effects of preparation process on the properties of lead magnesium niobate (PMN) based electrostictive materials, such as phase structure, microstructure and electrical property, are investigated and discussed. The results of experiment show the powder samples, fabricated by a modified two-step synthesis method with alkaline-earth metal dopants introduced in the preparation of common...
Bi0.9Ho0.1FeO3 ceramic is prepared by sol-gel method. We investigated the effect of Ho element doping in the BiFeO3. We studied the microstructure, morphology and ferromagnetism for Bi0.9Ho0.1FeO3 ceramic by XRD, SEM and SQUID. It shows that Bi0.9Ho0.1FeO3 ceramic exhibits single phase of perovskite structure. The c/a rate is elevated from 1 to 1.009 with respect to BiFeO3. The grains of Bi0.9Ho0.1...
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