Fangqi Gao

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Ba<inf>0.6</inf>Sr<inf>0.4</inf>TiO<inf>3</inf> thin films were deposited by RF-magnetron sputtering. Based on the theory of film nucleation, we investigated the influences of RF sputtering parameters, for instance sputtering time, substrate temperature, sputtering power, sputtering pressure and argon and annealing heat treatment on surface morphology and(More)
Yb3+/Ho3+ doped hexagonal NaGdF4 nanocrystals are synthesized through solvothermal method, for which pure hexagonal phased nanorods are presented. The concentration influence of Yb3+ ions on the sample morphology and fluorescence emission of Ho3+ is investigated. It is found that the sample size is changed from 25 nm to 125 nm and the upconversion emission(More)
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