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SUMMARY:Electrostatic effects in nanoscale ferroelectrics - Chiara Gattino
 ni\, Department of Chemical and Energy Engineering\, London South Bank Uni
 versity\, UK.
DTSTART:20220321T143000Z
DTEND:20220321T150000Z
UID:TALK167309@talks.cam.ac.uk
CONTACT:Dr M. Simoncelli
DESCRIPTION:The behavior of nanoscale forms of matter\, such as thin films
  or nanocrystal\, is strongly influenced by the structure and behavior of 
 their surfaces and interfaces. In nanoscale ferroelectrics\, a surface cha
 rge arises as a consequence of the ferroelectric polarization itself\, and
  this surface charge leads to an electrostatic instability – the so-call
 ed “polar catastrophe” – if it is not compensated. Here we show how 
 the properties of ferroelectric materials at the nanoscale are intimately 
 linked to the compensation mechanism that takes place at their surface. We
  also demonstrate how the structural and electronic properties of PbTiO3\,
  BiFeO3 and KTaO3 lead to a different compensation mechanism in each case\
 , and we discuss how to harness the properties of these nanoscale material
 s for technological applications.
LOCATION:Venue to be confirmed
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