Polycrystalline ferroelectric pto thin films on platinized silicon substrates

2 Polycrystalline ferroelectric PTO thin films on platinized silicon substrates 

This is due to contamination of the pto thin film with a natural water layer and physical adsorbates. This contamination leads to a reduced piezoelectric response in the pfm measurement. There are two possibilities of desorbing the contamination. The first one is to scan the 

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