摘要
This paper reports the impact of the laser pulse repetition frequency on growth processes,morphological and electro-physical parameters of nanocrystalline LiNbO_(3)thin films obtained by the pulsed laser deposition technique.It was found that the nucleation process in LiNbO_(3)films could controllably change by increasing the laser pulse repetition frequency.The film obtained at the repetition frequency of 4 Hz consists of local islands and clusters with a diameter of 118.1±5.9 nm.Nanocrystalline films,grown at the repetition frequency of 10 Hz,possess a continuous granular structure with a grain diameter of 235±11.75 nm.Achieved results can be used for the development of promising“green”energy devices based on lead-free piezoelectric energy harvesters.
基金
The reported study was funded by the Russian Foundation for Basic Research,projects numbers 19-38-60052,18-29-11019 mk,and 19-29-03041 mk,and partially supported by Grant of the President of the Russian Federation MK-6252.2021.4.
