
Dissertation of Zhuopeng Tan
Formation and Piezoelectricity of Self-Assembled PbTiO3-CoFe2O4 Nanostructural Films
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Main tasks of our research include: (1)exploringoptimum growth conditions for PLD deposition ofself-assembled nanophase PbTiO3-CoFe2O4 films withdifferent compositions and orientations; (2)analyzingmorphologies and nanostructures of the two-phasefilms to clarify relative effects of elastic energyand interface energy on the self-assembled filmformation; (3)investigating stress state andrelaxation of stresses arising as a result of aparaelectric-ferroelectric transformation in PbTiO3;(4)exploring ferroelectric state in the confinedPbTiO3 nanophase in the films with {110} and {111}orientations.
Main tasks of our research include: (1)exploring
optimum growth conditions for PLD deposition of
self-assembled nanophase PbTiO3-CoFe2O4 films with
different compositions and orientations; (2)analyzing
morphologies and nanostructures of the two-phase
films to clarify relative effects of elastic energy
and interface energy on the self-assembled film
formation; (3)investigating stress state and
relaxation of stresses arising as a result of a
paraelectric-ferroelectric transformation in PbTiO3;
(4)exploring ferroelectric state in the confined
PbTiO3 nanophase in the films with {110} and {111}
orientations.
optimum growth conditions for PLD deposition of
self-assembled nanophase PbTiO3-CoFe2O4 films with
different compositions and orientations; (2)analyzing
morphologies and nanostructures of the two-phase
films to clarify relative effects of elastic energy
and interface energy on the self-assembled film
formation; (3)investigating stress state and
relaxation of stresses arising as a result of a
paraelectric-ferroelectric transformation in PbTiO3;
(4)exploring ferroelectric state in the confined
PbTiO3 nanophase in the films with {110} and {111}
orientations.