Recently accepted in Nanoscale, this paper explores phase transitions of polarization topology in single spherical ferroelectric nanoparticles of PbTiO3 and BaTiO3. This work highlights some interesting dielectric properties of these systems that emerge as a size-dependent phenomena and shown that they can be manipulated by adjusting the materials combination of the configuration. Serge and John investigated this system with our collaborators at Argonne National Laboratory and with Pamir Alpay and his graduate student Yomery Espinal here at UConn.


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Mangeri et al, Nanoscale, 2017,9, 1616-1624