Effect of a Platinum Sublayer on the Microstructure and Spontaneous Polarization of Thin Lithium Niobate Films Deposited on a Silicon Substrate
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the microstructure, value of self-polarization, and local piezoelectric hysteresis loops of LiNbO3 thin films synthesized on silicon substrates with a native SiOx layer and with a platinum layer are compared via scanning probe microscopy. It is found that smoother surfaces, smaller grain sizes, and a simultaneous higher self-polarization value and effective piezoelectric coefficient are typical of LiNbO3 films applied to a silicon substrate with a platinum sublayer.
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