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A new approach to fabricate the film bulk acoustic wave resonator (FBAR) devices is presented that employs high-quality piezoelectric ZnO films, particularly sputter-deposited in a mixture of N2O and Ar gases as the reactive and sputtering gases, respectively. Various thermal annealing treatments were performed on the deposited ZnO films and their effects on the resonance characteristics of the FBAR...
CeO2 nanoparticles were prepared by a simple co-precipitation method and the structural and magnetic properties were studied. X-ray diffraction, Raman and selected area electron diffraction results indicate that the samples have the cubic fluorite structure without other impurity phases. Magnetisation measurements indicate that the CeO2 nanoparticles calcined at different temperatures exhibit room...
Er:Si/Al2O3 superlattices are fabricated by pulsed laser deposition (PLD) technique. Photoluminescence (PL) and PL excitation spectra measurements are carried out. The annealing temperature dependent PL intensity curves are presented. The influence of Si crystallization on the Er ions luminescence shows that the thinner the Si layer, and the shorter the distance r, the better its sensitizing performance.
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