Structure analysis on superdomains of PbZr(0 2)Ti(0 8) (110)-oriented thin films

Abstract

Ferroelectric materials have caught significant attention in the last decade because of its interesting properties like accurately modulates electric polarization of the material by applying external electric field This way can adjust the lattice constant by the piezoelectric property for the materials PbZr(x)Ti(1-x)O3 (PZT) was created as a ceramic complex oxide by B Jeff in 1954 It has an excellent dielectric constant and piezoelectric constant Thus researchers have done numerous studies in analysis of the characteristic for PZT grown on the STO (001) The PZT grown on others oriented STO however was mentioned less than PZT grown on the STO (001) We discover that there are new thin stripes structure contrary to classical thick stripes(a/c domain structure) In this study we try to realize the mechanism inside the thin stripes morphology the PZT/STO (110) brings to We utilized XRD to analyze the lattice structures and knew the arrangement of polarization through PFM We found the polarization arrangement of superdomains can be modified and created 180o domain walls in a local area by changing the external electric field

Date of Award	2019
Original language	English
Supervisor	Jan-Chi Yang (Supervisor)